hadoop CapacityScheduler 源码
haddop CapacityScheduler 代码
文件路径：/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/CapacityScheduler.java
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* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Comparator;
import java.util.EnumSet;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Random;
import java.util.Set;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.atomic.AtomicBoolean;
import org.apache.commons.lang3.StringUtils;
import org.apache.hadoop.yarn.server.resourcemanager.placement.ApplicationPlacementContext;
import org.apache.hadoop.yarn.server.resourcemanager.placement.CSMappingPlacementRule;
import org.apache.hadoop.yarn.server.resourcemanager.placement.PlacementFactory;
import org.apache.hadoop.yarn.server.resourcemanager.placement.PlacementRule;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.slf4j.Marker;
import org.slf4j.MarkerFactory;
import org.apache.hadoop.classification.InterfaceAudience.LimitedPrivate;
import org.apache.hadoop.classification.InterfaceStability.Evolving;
import org.apache.hadoop.conf.Configurable;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.security.AccessControlException;
import org.apache.hadoop.security.UserGroupInformation;
import org.apache.hadoop.util.Time;
import org.apache.hadoop.yarn.api.records.ApplicationAttemptId;
import org.apache.hadoop.yarn.api.records.ApplicationId;
import org.apache.hadoop.yarn.api.records.Container;
import org.apache.hadoop.yarn.api.records.ContainerId;
import org.apache.hadoop.yarn.api.records.ContainerStatus;
import org.apache.hadoop.yarn.api.records.ExecutionType;
import org.apache.hadoop.yarn.api.records.NodeAttribute;
import org.apache.hadoop.yarn.api.records.NodeId;
import org.apache.hadoop.yarn.api.records.Priority;
import org.apache.hadoop.yarn.api.records.QueueACL;
import org.apache.hadoop.yarn.api.records.QueueInfo;
import org.apache.hadoop.yarn.api.records.QueueState;
import org.apache.hadoop.yarn.api.records.QueueUserACLInfo;
import org.apache.hadoop.yarn.api.records.ReservationId;
import org.apache.hadoop.yarn.api.records.Resource;
import org.apache.hadoop.yarn.api.records.ResourceOption;
import org.apache.hadoop.yarn.api.records.ResourceRequest;
import org.apache.hadoop.yarn.api.records.ResourceSizing;
import org.apache.hadoop.yarn.api.records.SchedulingRequest;
import org.apache.hadoop.yarn.api.records.NodeState;
import org.apache.hadoop.yarn.conf.YarnConfiguration;
import org.apache.hadoop.yarn.exceptions.YarnException;
import org.apache.hadoop.yarn.exceptions.YarnRuntimeException;
import org.apache.hadoop.yarn.proto.YarnServiceProtos.SchedulerResourceTypes;
import org.apache.hadoop.yarn.server.resourcemanager.RMContext;
import org.apache.hadoop.yarn.server.resourcemanager.nodelabels.RMNodeLabelsManager;
import org.apache.hadoop.yarn.server.resourcemanager.recovery.RMStateStore.RMState;
import org.apache.hadoop.yarn.server.resourcemanager.recovery.records.ApplicationStateData;
import org.apache.hadoop.yarn.server.resourcemanager.reservation.ReservationConstants;
import org.apache.hadoop.yarn.server.resourcemanager.rmapp.RMApp;
import org.apache.hadoop.yarn.server.resourcemanager.rmapp.RMAppEvent;
import org.apache.hadoop.yarn.server.resourcemanager.rmapp.RMAppEventType;
import org.apache.hadoop.yarn.server.resourcemanager.rmapp.RMAppState;
import org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.RMAppAttemptEvent;
import org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.RMAppAttemptEventType;
import org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.RMAppAttemptState;
import org.apache.hadoop.yarn.server.resourcemanager.rmcontainer.RMContainer;
import org.apache.hadoop.yarn.server.resourcemanager.rmcontainer.RMContainerEventType;
import org.apache.hadoop.yarn.server.resourcemanager.rmcontainer.RMContainerImpl;
import org.apache.hadoop.yarn.server.resourcemanager.rmcontainer.RMContainerState;
import org.apache.hadoop.yarn.server.resourcemanager.rmnode.RMNode;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.AbstractYarnScheduler;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.Allocation;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.AppSchedulingInfo;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.ContainerUpdates;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.MutableConfScheduler;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.MutableConfigurationProvider;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.NodeType;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.PreemptableResourceScheduler;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.Queue;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.QueueInvalidException;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.QueueMetrics;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.ResourceLimits;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.ResourceUsage;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerApplication;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerApplicationAttempt;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerDynamicEditException;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerNode;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.SchedulerUtils;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.activities.ActivitiesLogger;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.activities.ActivitiesManager;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.activities.ActivityDiagnosticConstant;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.activities.ActivityState;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.activities.AllocationState;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.CSConfigurationProvider;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.FileBasedCSConfigurationProvider;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.conf.MutableCSConfigurationProvider;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.preemption.KillableContainer;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.preemption.PreemptionManager;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.common.AssignmentInformation;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.common.ContainerAllocationProposal;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.common.QueueEntitlement;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.common.ResourceAllocationCommitter;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.common.ResourceCommitRequest;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.common.SchedulerContainer;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.common.fica.FiCaSchedulerApp;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.common.fica.FiCaSchedulerNode;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.constraint.InvalidAllocationTagsQueryException;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.constraint.PlacementConstraintsUtil;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.event.AppAddedSchedulerEvent;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.event.AppAttemptAddedSchedulerEvent;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.event.AppAttemptRemovedSchedulerEvent;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.event.AppRemovedSchedulerEvent;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.event.ContainerExpiredSchedulerEvent;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.event.ContainerPreemptEvent;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.event.NodeAddedSchedulerEvent;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.event.NodeAttributesUpdateSchedulerEvent;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.event.NodeLabelsUpdateSchedulerEvent;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.event.NodeRemovedSchedulerEvent;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.event.NodeResourceUpdateSchedulerEvent;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.event.NodeUpdateSchedulerEvent;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.event
.QueueManagementChangeEvent;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.event.AutoCreatedQueueDeletionEvent;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.event.ReleaseContainerEvent;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.event.SchedulerEvent;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.event.SchedulerEventType;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.placement.CandidateNodeSet;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.placement.CandidateNodeSetUtils;
import org.apache.hadoop.yarn.server.resourcemanager.scheduler.placement.SimpleCandidateNodeSet;
import org.apache.hadoop.yarn.server.resourcemanager.security.AppPriorityACLsManager;
import org.apache.hadoop.yarn.server.resourcemanager.security.RMContainerTokenSecretManager;
import org.apache.hadoop.yarn.server.scheduler.SchedulerRequestKey;
import org.apache.hadoop.yarn.server.utils.BuilderUtils;
import org.apache.hadoop.yarn.server.utils.Lock;
import org.apache.hadoop.yarn.util.resource.DefaultResourceCalculator;
import org.apache.hadoop.yarn.util.resource.ResourceCalculator;
import org.apache.hadoop.yarn.util.resource.ResourceUtils;
import org.apache.hadoop.yarn.util.resource.Resources;
import org.apache.hadoop.classification.VisibleForTesting;
import org.apache.hadoop.util.Preconditions;
import org.apache.hadoop.thirdparty.com.google.common.util.concurrent.SettableFuture;
import static org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity.CapacitySchedulerConfiguration.QUEUE_MAPPING;
@LimitedPrivate("yarn")
@Evolving
@SuppressWarnings("unchecked")
public class CapacityScheduler extends
AbstractYarnScheduler<FiCaSchedulerApp, FiCaSchedulerNode> implements
PreemptableResourceScheduler, CapacitySchedulerContext, Configurable,
ResourceAllocationCommitter, MutableConfScheduler {
private static final Marker FATAL =
MarkerFactory.getMarker("FATAL");
private static final Logger LOG =
LoggerFactory.getLogger(CapacityScheduler.class);
private CapacitySchedulerQueueManager queueManager;
private CapacitySchedulerQueueContext queueContext;
private WorkflowPriorityMappingsManager workflowPriorityMappingsMgr;
private PreemptionManager preemptionManager = new PreemptionManager();
private volatile boolean isLazyPreemptionEnabled = false;
private int offswitchPerHeartbeatLimit;
private boolean assignMultipleEnabled;
private int maxAssignPerHeartbeat;
private CSConfigurationProvider csConfProvider;
private int threadNum = 0;
private final PendingApplicationComparator applicationComparator =
new PendingApplicationComparator();
@Override
public void setConf(Configuration conf) {
yarnConf = conf;
}
private void validateConf(Configuration conf) {
// validate scheduler memory allocation setting
CapacitySchedulerConfigValidator.validateMemoryAllocation(conf);
// validate scheduler vcores allocation setting
CapacitySchedulerConfigValidator.validateVCores(conf);
}
@Override
public Configuration getConf() {
return yarnConf;
}
private CapacitySchedulerConfiguration conf;
private Configuration yarnConf;
private ResourceCalculator calculator;
private boolean usePortForNodeName;
private AsyncSchedulingConfiguration asyncSchedulingConf;
private RMNodeLabelsManager labelManager;
private AppPriorityACLsManager appPriorityACLManager;
private boolean multiNodePlacementEnabled;
private boolean printedVerboseLoggingForAsyncScheduling;
private boolean appShouldFailFast;
private CSMaxRunningAppsEnforcer maxRunningEnforcer;
public CapacityScheduler() {
super(CapacityScheduler.class.getName());
this.maxRunningEnforcer = new CSMaxRunningAppsEnforcer(this);
}
@Override
public QueueMetrics getRootQueueMetrics() {
return getRootQueue().getMetrics();
}
public CSQueue getRootQueue() {
return queueManager.getRootQueue();
}
@Override
public CapacitySchedulerConfiguration getConfiguration() {
return conf;
}
@Override
public CapacitySchedulerQueueContext getQueueContext() {
return queueContext;
}
@Override
public RMContainerTokenSecretManager getContainerTokenSecretManager() {
return this.rmContext.getContainerTokenSecretManager();
}
@Override
public ResourceCalculator getResourceCalculator() {
return calculator;
}
@VisibleForTesting
public void setResourceCalculator(ResourceCalculator rc) {
this.calculator = rc;
}
@Override
public int getNumClusterNodes() {
return nodeTracker.nodeCount();
}
@Override
public RMContext getRMContext() {
return this.rmContext;
}
@Override
public void setRMContext(RMContext rmContext) {
this.rmContext = rmContext;
}
@VisibleForTesting
void initScheduler(Configuration configuration) throws
IOException, YarnException {
writeLock.lock();
try {
this.csConfProvider = getCsConfProvider(configuration);
this.csConfProvider.init(configuration);
this.conf = this.csConfProvider.loadConfiguration(configuration);
validateConf(this.conf);
this.minimumAllocation = super.getMinimumAllocation();
initMaximumResourceCapability(super.getMaximumAllocation());
this.calculator = initResourceCalculator();
this.usePortForNodeName = this.conf.getUsePortForNodeName();
this.applications = new ConcurrentHashMap<>();
this.labelManager = rmContext.getNodeLabelManager();
this.appPriorityACLManager = new AppPriorityACLsManager(conf);
this.queueManager = new CapacitySchedulerQueueManager(yarnConf,
this.labelManager, this.appPriorityACLManager);
this.queueManager.setCapacitySchedulerContext(this);
this.workflowPriorityMappingsMgr = new WorkflowPriorityMappingsManager();
this.activitiesManager = new ActivitiesManager(rmContext);
activitiesManager.init(conf);
this.queueContext = new CapacitySchedulerQueueContext(this);
initializeQueues(this.conf);
this.isLazyPreemptionEnabled = conf.getLazyPreemptionEnabled();
this.assignMultipleEnabled = this.conf.getAssignMultipleEnabled();
this.maxAssignPerHeartbeat = this.conf.getMaxAssignPerHeartbeat();
this.appShouldFailFast = CapacitySchedulerConfiguration.shouldAppFailFast(getConfig());
initAsyncSchedulingProperties();
// Setup how many containers we can allocate for each round
offswitchPerHeartbeatLimit = this.conf.getOffSwitchPerHeartbeatLimit();
initMultiNodePlacement();
printSchedulerInitialized();
} finally {
writeLock.unlock();
}
}
private CSConfigurationProvider getCsConfProvider(Configuration configuration)
throws IOException {
String confProviderStr = configuration.get(
YarnConfiguration.SCHEDULER_CONFIGURATION_STORE_CLASS,
YarnConfiguration.DEFAULT_CONFIGURATION_STORE);
switch (confProviderStr) {
case YarnConfiguration.FILE_CONFIGURATION_STORE:
return new FileBasedCSConfigurationProvider(rmContext);
case YarnConfiguration.MEMORY_CONFIGURATION_STORE:
case YarnConfiguration.LEVELDB_CONFIGURATION_STORE:
case YarnConfiguration.ZK_CONFIGURATION_STORE:
case YarnConfiguration.FS_CONFIGURATION_STORE:
return new MutableCSConfigurationProvider(rmContext);
default:
throw new IOException("Invalid configuration store class: " + confProviderStr);
}
}
private ResourceCalculator initResourceCalculator() {
ResourceCalculator resourceCalculator = this.conf.getResourceCalculator();
if (resourceCalculator instanceof DefaultResourceCalculator
&& ResourceUtils.getNumberOfKnownResourceTypes() > 2) {
throw new YarnRuntimeException("RM uses DefaultResourceCalculator which"
+ " used only memory as resource-type but invalid resource-types"
+ " specified " + ResourceUtils.getResourceTypes() + ". Use"
+ " DominantResourceCalculator instead to make effective use of"
+ " these resource-types");
}
return resourceCalculator;
}
private void initAsyncSchedulingProperties() {
this.asyncSchedulingConf = new AsyncSchedulingConfiguration(conf, this);
}
private void initMultiNodePlacement() {
// Register CS specific multi-node policies to common MultiNodeManager
// which will add to a MultiNodeSorter which gives a pre-sorted list of
// nodes to scheduler's allocation.
multiNodePlacementEnabled = this.conf.getMultiNodePlacementEnabled();
if (rmContext.getMultiNodeSortingManager() != null) {
rmContext.getMultiNodeSortingManager().registerMultiNodePolicyNames(
multiNodePlacementEnabled,
this.conf.getMultiNodePlacementPolicies());
}
}
private void printSchedulerInitialized() {
LOG.info("Initialized CapacityScheduler with calculator={}, minimumAllocation={}, " +
"maximumAllocation={}, asynchronousScheduling={}, asyncScheduleInterval={} ms, " +
"multiNodePlacementEnabled={}, assignMultipleEnabled={}, maxAssignPerHeartbeat={}, " +
"offswitchPerHeartbeatLimit={}",
getResourceCalculator().getClass(),
getMinimumResourceCapability(),
getMaximumResourceCapability(),
asyncSchedulingConf.isScheduleAsynchronously(),
asyncSchedulingConf.getAsyncScheduleInterval(),
multiNodePlacementEnabled,
assignMultipleEnabled,
maxAssignPerHeartbeat,
offswitchPerHeartbeatLimit);
}
private void startSchedulerThreads() {
writeLock.lock();
try {
activitiesManager.start();
asyncSchedulingConf.startThreads();
} finally {
writeLock.unlock();
}
}
@Override
public void serviceInit(Configuration conf) throws Exception {
Configuration configuration = new Configuration(conf);
super.serviceInit(conf);
initScheduler(configuration);
// Initialize SchedulingMonitorManager
schedulingMonitorManager.initialize(rmContext, conf);
}
@Override
public void serviceStart() throws Exception {
startSchedulerThreads();
super.serviceStart();
}
@Override
public void serviceStop() throws Exception {
writeLock.lock();
try {
this.activitiesManager.stop();
asyncSchedulingConf.serviceStopInvoked();
} finally {
writeLock.unlock();
}
if (isConfigurationMutable()) {
((MutableConfigurationProvider) csConfProvider).close();
}
super.serviceStop();
}
public void reinitialize(Configuration newConf, RMContext rmContext,
boolean validation) throws IOException {
writeLock.lock();
try {
Configuration configuration = new Configuration(newConf);
CapacitySchedulerConfiguration oldConf = this.conf;
if (validation) {
this.conf = new CapacitySchedulerConfiguration(newConf, false);
} else {
this.conf = csConfProvider.loadConfiguration(configuration);
}
validateConf(this.conf);
try {
LOG.info("Re-initializing queues...");
refreshMaximumAllocation(
ResourceUtils.fetchMaximumAllocationFromConfig(this.conf));
reinitializeQueues(this.conf);
} catch (Throwable t) {
this.conf = oldConf;
reinitializeQueues(this.conf);
refreshMaximumAllocation(
ResourceUtils.fetchMaximumAllocationFromConfig(this.conf));
throw new IOException("Failed to re-init queues : " + t.getMessage(),
t);
}
if (!validation) {
// update lazy preemption
this.isLazyPreemptionEnabled = this.conf.getLazyPreemptionEnabled();
// Setup how many containers we can allocate for each round
assignMultipleEnabled = this.conf.getAssignMultipleEnabled();
maxAssignPerHeartbeat = this.conf.getMaxAssignPerHeartbeat();
offswitchPerHeartbeatLimit = this.conf.getOffSwitchPerHeartbeatLimit();
appShouldFailFast = CapacitySchedulerConfiguration.shouldAppFailFast(
getConfig());
LOG.info("assignMultipleEnabled = " + assignMultipleEnabled + "\n" +
"maxAssignPerHeartbeat = " + maxAssignPerHeartbeat + "\n" +
"offswitchPerHeartbeatLimit = " + offswitchPerHeartbeatLimit);
super.reinitialize(newConf, rmContext);
}
maxRunningEnforcer.updateRunnabilityOnReload();
} finally {
writeLock.unlock();
}
}
@Override
public void reinitialize(Configuration newConf, RMContext rmContext)
throws IOException {
reinitialize(newConf, rmContext, false);
}
long getAsyncScheduleInterval() {
return asyncSchedulingConf.getAsyncScheduleInterval();
}
private final static Random random = new Random(System.currentTimeMillis());
@VisibleForTesting
public static boolean shouldSkipNodeSchedule(FiCaSchedulerNode node,
CapacityScheduler cs, boolean printVerboseLog) {
// Skip node which missed YarnConfiguration.SCHEDULER_SKIP_NODE_MULTIPLIER
// heartbeats since the node might be dead and we should not continue
// allocate containers on that.
if (!SchedulerUtils.isNodeHeartbeated(node, cs.getSkipNodeInterval())) {
if (printVerboseLog && LOG.isDebugEnabled()) {
long timeElapsedFromLastHeartbeat =
Time.monotonicNow() - node.getLastHeartbeatMonotonicTime();
LOG.debug("Skip scheduling on node " + node.getNodeID()
+ " because it haven't heartbeated for "
+ timeElapsedFromLastHeartbeat / 1000.0f + " secs");
}
return true;
}
if (node.getRMNode().getState() != NodeState.RUNNING) {
if (printVerboseLog && LOG.isDebugEnabled()) {
LOG.debug("Skip scheduling on node because it is in " +
node.getRMNode().getState() + " state");
}
return true;
}
return false;
}
private static boolean isPrintSkippedNodeLogging(CapacityScheduler cs) {
// To avoid too verbose DEBUG logging, only print debug log once for
// every 10 secs.
boolean printSkipedNodeLogging = false;
if (LOG.isDebugEnabled()) {
if (Time.monotonicNow() / 1000 % 10 == 0) {
printSkipedNodeLogging = (!cs.printedVerboseLoggingForAsyncScheduling);
} else {
cs.printedVerboseLoggingForAsyncScheduling = false;
}
}
return printSkipedNodeLogging;
}
/**
* Schedule on all nodes by starting at a random point.
* Schedule on all partitions by starting at a random partition
* when multiNodePlacementEnabled is true.
* @param cs
*/
static void schedule(CapacityScheduler cs) throws InterruptedException{
// First randomize the start point
int current = 0;
Collection<FiCaSchedulerNode> nodes = cs.nodeTracker.getAllNodes();
// If nodes size is 0 (when there are no node managers registered,
// we can return from here itself.
int nodeSize = nodes.size();
if(nodeSize == 0) {
return;
}
if (!cs.multiNodePlacementEnabled) {
int start = random.nextInt(nodeSize);
boolean printSkippedNodeLogging = isPrintSkippedNodeLogging(cs);
// Allocate containers of node [start, end)
for (FiCaSchedulerNode node : nodes) {
if (current++ >= start) {
if (shouldSkipNodeSchedule(node, cs, printSkippedNodeLogging)) {
continue;
}
cs.allocateContainersToNode(node.getNodeID(), false);
}
}
current = 0;
// Allocate containers of node [0, start)
for (FiCaSchedulerNode node : nodes) {
if (current++ > start) {
break;
}
if (shouldSkipNodeSchedule(node, cs, printSkippedNodeLogging)) {
continue;
}
cs.allocateContainersToNode(node.getNodeID(), false);
}
if (printSkippedNodeLogging) {
cs.printedVerboseLoggingForAsyncScheduling = true;
}
} else {
// Get all partitions
List<String> partitions = cs.nodeTracker.getPartitions();
int partitionSize = partitions.size();
// First randomize the start point
int start = random.nextInt(partitionSize);
// Allocate containers of partition [start, end)
for (String partition : partitions) {
if (current++ >= start) {
CandidateNodeSet<FiCaSchedulerNode> candidates =
cs.getCandidateNodeSet(partition);
if (candidates == null) {
continue;
}
cs.allocateContainersToNode(candidates, false);
}
}
current = 0;
// Allocate containers of partition [0, start)
for (String partition : partitions) {
if (current++ > start) {
break;
}
CandidateNodeSet<FiCaSchedulerNode> candidates =
cs.getCandidateNodeSet(partition);
if (candidates == null) {
continue;
}
cs.allocateContainersToNode(candidates, false);
}
}
Thread.sleep(cs.getAsyncScheduleInterval());
}
@VisibleForTesting
public void setAsyncSchedulingConf(AsyncSchedulingConfiguration conf) {
this.asyncSchedulingConf = conf;
}
static class AsyncScheduleThread extends Thread {
private final CapacityScheduler cs;
private AtomicBoolean runSchedules = new AtomicBoolean(false);
public AsyncScheduleThread(CapacityScheduler cs) {
this.cs = cs;
setName("AsyncCapacitySchedulerThread" + cs.threadNum++);
setDaemon(true);
}
@Override
public void run() {
int debuggingLogCounter = 0;
while (!Thread.currentThread().isInterrupted()) {
try {
if (!runSchedules.get()) {
Thread.sleep(100);
} else {
// Don't run schedule if we have some pending backlogs already
if (cs.getAsyncSchedulingPendingBacklogs()
> cs.asyncSchedulingConf.getAsyncMaxPendingBacklogs()) {
Thread.sleep(1);
} else{
schedule(cs);
if(LOG.isDebugEnabled()) {
// Adding a debug log here to ensure that the thread is alive
// and running fine.
if (debuggingLogCounter++ > 10000) {
debuggingLogCounter = 0;
LOG.debug("AsyncScheduleThread[" + getName() + "] is running!");
}
}
}
}
} catch (InterruptedException ie) {
// keep interrupt signal
Thread.currentThread().interrupt();
}
}
LOG.info("AsyncScheduleThread[" + getName() + "] exited!");
}
public void beginSchedule() {
runSchedules.set(true);
}
public void suspendSchedule() {
runSchedules.set(false);
}
}
static class ResourceCommitterService extends Thread {
private final CapacityScheduler cs;
private BlockingQueue<ResourceCommitRequest<FiCaSchedulerApp, FiCaSchedulerNode>>
backlogs = new LinkedBlockingQueue<>();
public ResourceCommitterService(CapacityScheduler cs) {
this.cs = cs;
setDaemon(true);
}
@Override
public void run() {
while (!Thread.currentThread().isInterrupted()) {
try {
ResourceCommitRequest<FiCaSchedulerApp, FiCaSchedulerNode> request =
backlogs.take();
cs.writeLock.lock();
try {
cs.tryCommit(cs.getClusterResource(), request, true);
} finally {
cs.writeLock.unlock();
}
} catch (InterruptedException e) {
LOG.error(e.toString());
Thread.currentThread().interrupt();
}
}
LOG.info("ResourceCommitterService exited!");
}
public void addNewCommitRequest(
ResourceCommitRequest<FiCaSchedulerApp, FiCaSchedulerNode> proposal) {
backlogs.add(proposal);
}
public int getPendingBacklogs() {
return backlogs.size();
}
}
@VisibleForTesting
public PlacementRule getCSMappingPlacementRule() throws IOException {
readLock.lock();
try {
CSMappingPlacementRule mappingRule = new CSMappingPlacementRule();
mappingRule.initialize(this);
return mappingRule;
} finally {
readLock.unlock();
}
}
@VisibleForTesting
public void updatePlacementRules() throws IOException {
// Initialize placement rules
Collection<String> placementRuleStrs = conf.getStringCollection(
YarnConfiguration.QUEUE_PLACEMENT_RULES);
List<PlacementRule> placementRules = new ArrayList<>();
Set<String> distinguishRuleSet = CapacitySchedulerConfigValidator
.validatePlacementRules(placementRuleStrs);
// add UserGroupMappingPlacementRule if empty,default value of
// yarn.scheduler.queue-placement-rules is user-group
if (distinguishRuleSet.isEmpty()) {
distinguishRuleSet.add(YarnConfiguration.USER_GROUP_PLACEMENT_RULE);
}
placementRuleStrs = new ArrayList<>(distinguishRuleSet);
boolean csMappingAdded = false;
for (String placementRuleStr : placementRuleStrs) {
switch (placementRuleStr) {
case YarnConfiguration.USER_GROUP_PLACEMENT_RULE:
case YarnConfiguration.APP_NAME_PLACEMENT_RULE:
if (!csMappingAdded) {
PlacementRule csMappingRule = getCSMappingPlacementRule();
if (null != csMappingRule) {
placementRules.add(csMappingRule);
csMappingAdded = true;
}
}
break;
default:
boolean isMappingNotEmpty;
try {
PlacementRule rule = PlacementFactory.getPlacementRule(
placementRuleStr, conf);
if (null != rule) {
try {
isMappingNotEmpty = rule.initialize(this);
} catch (IOException ie) {
throw new IOException(ie);
}
if (isMappingNotEmpty) {
placementRules.add(rule);
}
}
} catch (ClassNotFoundException cnfe) {
throw new IOException(cnfe);
}
}
}
rmContext.getQueuePlacementManager().updateRules(placementRules);
}
@Lock(CapacityScheduler.class)
private void initializeQueues(CapacitySchedulerConfiguration conf)
throws YarnException {
try {
this.queueManager.initializeQueues(conf);
updatePlacementRules();
this.workflowPriorityMappingsMgr.initialize(this);
// Notify Preemption Manager
preemptionManager.refreshQueues(null, this.getRootQueue());
} catch (Exception e) {
throw new YarnException("Failed to initialize queues", e);
}
}
@Lock(CapacityScheduler.class)
private void reinitializeQueues(CapacitySchedulerConfiguration newConf)
throws IOException {
queueContext.reinitialize();
this.queueManager.reinitializeQueues(newConf);
updatePlacementRules();
this.workflowPriorityMappingsMgr.initialize(this);
// Notify Preemption Manager
preemptionManager.refreshQueues(null, this.getRootQueue());
}
@Override
public CSQueue getQueue(String queueName) {
if (queueName == null) {
return null;
}
return this.queueManager.getQueue(queueName);
}
/**
* Returns the normalized queue name, which should be used for internal
* queue references. Currently this is the fullQueuename which disambiguously
* identifies a queue.
* @param name Name of the queue to be normalized
* @return The normalized (full name) of the queue
*/
public String normalizeQueueName(String name) {
if (this.queueManager == null) {
return name;
}
return this.queueManager.normalizeQueueName(name);
}
/**
* Determines if a short queue name reference is ambiguous, if there are at
* least two queues with the same name, it is considered ambiguous. Otherwise
* it is not.
* @param queueName The name of the queue to check for ambiguity
* @return true if there are at least 2 queues with the same name
*/
public boolean isAmbiguous(String queueName) {
return this.queueManager.isAmbiguous(queueName);
}
private void addApplicationOnRecovery(ApplicationId applicationId,
String queueName, String user,
Priority priority, ApplicationPlacementContext placementContext,
boolean unmanagedAM) {
writeLock.lock();
try {
//check if the queue needs to be auto-created during recovery
CSQueue queue = getOrCreateQueueFromPlacementContext(applicationId, user,
queueName, placementContext, true);
if (queue == null) {
//During a restart, this indicates a queue was removed, which is
//not presently supported
if (!appShouldFailFast) {
this.rmContext.getDispatcher().getEventHandler().handle(
new RMAppEvent(applicationId, RMAppEventType.KILL,
"Application killed on recovery as it"
+ " was submitted to queue " + queueName
+ " which no longer exists after restart."));
return;
} else{
String queueErrorMsg = "Queue named " + queueName + " missing "
+ "during application recovery."
+ " Queue removal during recovery is not presently "
+ "supported by the capacity scheduler, please "
+ "restart with all queues configured"
+ " which were present before shutdown/restart.";
LOG.error(FATAL, queueErrorMsg);
throw new QueueInvalidException(queueErrorMsg);
}
}
if (!(queue instanceof AbstractLeafQueue)) {
// During RM restart, this means leaf queue was converted to a parent
// queue, which is not supported for running apps.
if (!appShouldFailFast) {
this.rmContext.getDispatcher().getEventHandler().handle(
new RMAppEvent(applicationId, RMAppEventType.KILL,
"Application killed on recovery as it was "
+ "submitted to queue " + queueName
+ " which is no longer a leaf queue after restart."));
return;
} else{
String queueErrorMsg = "Queue named " + queueName
+ " is no longer a leaf queue during application recovery."
+ " Changing a leaf queue to a parent queue during recovery is"
+ " not presently supported by the capacity scheduler. Please"
+ " restart with leaf queues before shutdown/restart continuing"
+ " as leaf queues.";
LOG.error(FATAL, queueErrorMsg);
throw new QueueInvalidException(queueErrorMsg);
}
}
// When recovering apps in this queue but queue is in STOPPED state,
// that means its previous state was DRAINING. So we auto transit
// the state to DRAINING for recovery.
if (queue.getState() == QueueState.STOPPED) {
((AbstractLeafQueue) queue).recoverDrainingState();
}
// Submit to the queue
try {
queue.submitApplication(applicationId, user, queueName);
} catch (AccessControlException ace) {
// Ignore the exception for recovered app as the app was previously
// accepted.
LOG.warn("AccessControlException received when trying to recover "
+ applicationId + " in queue " + queueName + " for user " + user
+ ". Since the app was in the queue prior to recovery, the Capacity"
+ " Scheduler will recover the app anyway.", ace);
}
queue.getMetrics().submitApp(user, unmanagedAM);
SchedulerApplication<FiCaSchedulerApp> application =
new SchedulerApplication<FiCaSchedulerApp>(queue, user, priority,
unmanagedAM);
applications.put(applicationId, application);
LOG.info("Accepted application " + applicationId + " from user: " + user
+ ", in queue: " + queueName);
LOG.debug(
applicationId + " is recovering. Skip notifying APP_ACCEPTED");
} finally {
writeLock.unlock();
}
}
private CSQueue getOrCreateQueueFromPlacementContext(ApplicationId
applicationId, String user, String queueName,
ApplicationPlacementContext placementContext,
boolean isRecovery) {
CSQueue queue = getQueue(queueName);
QueuePath queuePath = new QueuePath(queueName);
if (queue != null) {
return queue;
}
if (isAmbiguous(queueName)) {
return null;
}
if (placementContext != null) {
queuePath = new QueuePath(placementContext.getFullQueuePath());
}
//we need to make sure there are no empty path parts present
if (queuePath.hasEmptyPart()) {
LOG.error("Application submitted to invalid path due to empty parts: " +
"'{}'", queuePath);
return null;
}
if (!queuePath.hasParent()) {
LOG.error("Application submitted to a queue without parent" +
" '{}'", queuePath);
return null;
}
try {
writeLock.lock();
return queueManager.createQueue(queuePath);
} catch (YarnException | IOException e) {
// A null queue is expected if the placementContext is null. In order
// not to disrupt the control flow, if we fail to auto create a queue,
// we fall back to the original logic.
if (placementContext == null) {
LOG.error("Could not auto-create leaf queue " + queueName +
" due to : ", e);
return null;
}
handleQueueCreationError(applicationId, user, queueName, isRecovery, e);
} finally {
writeLock.unlock();
}
return null;
}
private void handleQueueCreationError(
ApplicationId applicationId, String user, String queueName,
boolean isRecovery, Exception e) {
if (isRecovery) {
if (!appShouldFailFast) {
LOG.error("Could not auto-create leaf queue " + queueName +
" due to : ", e);
this.rmContext.getDispatcher().getEventHandler().handle(
new RMAppEvent(applicationId, RMAppEventType.KILL,
"Application killed on recovery"
+ " as it was submitted to queue " + queueName
+ " which did not exist and could not be auto-created"));
} else {
String queueErrorMsg =
"Queue named " + queueName + " could not be "
+ "auto-created during application recovery.";
LOG.error(FATAL, queueErrorMsg, e);
throw new QueueInvalidException(queueErrorMsg);
}
} else {
LOG.error("Could not auto-create leaf queue due to : ", e);
final String message =
"Application " + applicationId + " submission by user : "
+ user
+ " to queue : " + queueName + " failed : " + e
.getMessage();
this.rmContext.getDispatcher().getEventHandler().handle(
new RMAppEvent(applicationId, RMAppEventType.APP_REJECTED,
message));
}
}
private void addApplication(ApplicationId applicationId, String queueName,
String user, Priority priority,
ApplicationPlacementContext placementContext, boolean unmanagedAM) {
writeLock.lock();
try {
if (isSystemAppsLimitReached()) {
String message = "Maximum system application limit reached,"
+ "cannot accept submission of application: " + applicationId;
this.rmContext.getDispatcher().getEventHandler().handle(
new RMAppEvent(applicationId, RMAppEventType.APP_REJECTED,
message));
return;
}
//Could be a potential auto-created leaf queue
CSQueue queue = getOrCreateQueueFromPlacementContext(
applicationId, user, queueName, placementContext, false);
if (queue == null) {
String message;
if (isAmbiguous(queueName)) {
message = "Application " + applicationId
+ " submitted by user " + user
+ " to ambiguous queue: " + queueName
+ " please use full queue path instead.";
} else {
message =
"Application " + applicationId + " submitted by user " + user
+ " to unknown queue: " + queueName;
}
this.rmContext.getDispatcher().getEventHandler().handle(
new RMAppEvent(applicationId, RMAppEventType.APP_REJECTED,
message));
return;
}
if (!(queue instanceof AbstractLeafQueue)) {
String message =
"Application " + applicationId + " submitted by user : " + user
+ " to non-leaf queue : " + queueName;
this.rmContext.getDispatcher().getEventHandler().handle(
new RMAppEvent(applicationId, RMAppEventType.APP_REJECTED,
message));
return;
} else if (queue instanceof AutoCreatedLeafQueue && queue
.getParent() instanceof ManagedParentQueue) {
//If queue already exists and auto-queue creation was not required,
//placement context should not be null
if (placementContext == null) {
String message =
"Application " + applicationId + " submission by user : " + user
+ " to specified queue : " + queueName + " is prohibited. "
+ "Verify automatic queue mapping for user exists in " +
QUEUE_MAPPING;
this.rmContext.getDispatcher().getEventHandler().handle(
new RMAppEvent(applicationId, RMAppEventType.APP_REJECTED,
message));
return;
// For a queue which exists already and
// not auto-created above, then its parent queue should match
// the parent queue specified in queue mapping
} else if (!queue.getParent().getQueueShortName().equals(
placementContext.getParentQueue())
&& !queue.getParent().getQueuePath().equals(
placementContext.getParentQueue())) {
String message =
"Auto created Leaf queue " + placementContext.getQueue() + " "
+ "already exists under queue : " + queue
.getParent().getQueueShortName()
+ ". But Queue mapping configuration " +
CapacitySchedulerConfiguration.QUEUE_MAPPING + " has been "
+ "updated to a different parent queue : "
+ placementContext.getParentQueue()
+ " for the specified user : " + user;
this.rmContext.getDispatcher().getEventHandler().handle(
new RMAppEvent(applicationId, RMAppEventType.APP_REJECTED,
message));
return;
}
}
try {
priority = workflowPriorityMappingsMgr.mapWorkflowPriorityForApp(
applicationId, queue, user, priority);
} catch (YarnException e) {
String message = "Failed to submit application " + applicationId +
" submitted by user " + user + " reason: " + e.getMessage();
this.rmContext.getDispatcher().getEventHandler().handle(new RMAppEvent(
applicationId, RMAppEventType.APP_REJECTED, message));
return;
}
// Submit to the queue
try {
queue.submitApplication(applicationId, user, queueName);
} catch (AccessControlException ace) {
LOG.info("Failed to submit application " + applicationId + " to queue "
+ queueName + " from user " + user, ace);
this.rmContext.getDispatcher().getEventHandler().handle(
new RMAppEvent(applicationId, RMAppEventType.APP_REJECTED,
ace.toString()));
return;
}
// update the metrics
queue.getMetrics().submitApp(user, unmanagedAM);
SchedulerApplication<FiCaSchedulerApp> application =
new SchedulerApplication<FiCaSchedulerApp>(queue, user, priority,
unmanagedAM);
applications.put(applicationId, application);
LOG.info("Accepted application " + applicationId + " from user: " + user
+ ", in queue: " + queueName);
rmContext.getDispatcher().getEventHandler().handle(
new RMAppEvent(applicationId, RMAppEventType.APP_ACCEPTED));
} finally {
writeLock.unlock();
}
}
private void addApplicationAttempt(
ApplicationAttemptId applicationAttemptId,
boolean transferStateFromPreviousAttempt,
boolean isAttemptRecovering) {
writeLock.lock();
try {
SchedulerApplication<FiCaSchedulerApp> application = applications.get(
applicationAttemptId.getApplicationId());
if (application == null) {
LOG.warn("Application " + applicationAttemptId.getApplicationId()
+ " cannot be found in scheduler.");
return;
}
CSQueue queue = (CSQueue) application.getQueue();
FiCaSchedulerApp attempt = new FiCaSchedulerApp(applicationAttemptId,
application.getUser(), queue, queue.getAbstractUsersManager(),
rmContext, application.getPriority(), isAttemptRecovering,
activitiesManager);
if (transferStateFromPreviousAttempt) {
attempt.transferStateFromPreviousAttempt(
application.getCurrentAppAttempt());
}
application.setCurrentAppAttempt(attempt);
// Update attempt priority to the latest to avoid race condition i.e
// SchedulerApplicationAttempt is created with old priority but it is not
// set to SchedulerApplication#setCurrentAppAttempt.
// Scenario would occur is
// 1. SchdulerApplicationAttempt is created with old priority.
// 2. updateApplicationPriority() updates SchedulerApplication. Since
// currentAttempt is null, it just return.
// 3. ScheduelerApplcationAttempt is set in
// SchedulerApplication#setCurrentAppAttempt.
attempt.setPriority(application.getPriority());
maxRunningEnforcer.checkRunnabilityWithUpdate(attempt);
maxRunningEnforcer.trackApp(attempt);
queue.submitApplicationAttempt(attempt, application.getUser());
LOG.info("Added Application Attempt " + applicationAttemptId
+ " to scheduler from user " + application.getUser() + " in queue "
+ queue.getQueuePath());
if (isAttemptRecovering) {
LOG.debug("{} is recovering. Skipping notifying ATTEMPT_ADDED",
applicationAttemptId);
} else{
rmContext.getDispatcher().getEventHandler().handle(
new RMAppAttemptEvent(applicationAttemptId,
RMAppAttemptEventType.ATTEMPT_ADDED));
}
} finally {
writeLock.unlock();
}
}
private void doneApplication(ApplicationId applicationId,
RMAppState finalState) {
writeLock.lock();
try {
SchedulerApplication<FiCaSchedulerApp> application = applications.get(
applicationId);
if (application == null) {
// The AppRemovedSchedulerEvent maybe sent on recovery for completed
// apps, ignore it.
LOG.warn("Couldn't find application " + applicationId);
return;
}
CSQueue queue = (CSQueue) application.getQueue();
if (!(queue instanceof AbstractLeafQueue)) {
LOG.error("Cannot finish application " + "from non-leaf queue: " + queue
.getQueuePath());
} else{
queue.finishApplication(applicationId, application.getUser());
}
application.stop(finalState);
applications.remove(applicationId);
} finally {
writeLock.unlock();
}
}
private void doneApplicationAttempt(
ApplicationAttemptId applicationAttemptId,
RMAppAttemptState rmAppAttemptFinalState, boolean keepContainers) {
writeLock.lock();
try {
LOG.info("Application Attempt " + applicationAttemptId + " is done."
+ " finalState=" + rmAppAttemptFinalState);
FiCaSchedulerApp attempt = getApplicationAttempt(applicationAttemptId);
SchedulerApplication<FiCaSchedulerApp> application = applications.get(
applicationAttemptId.getApplicationId());
if (application == null || attempt == null) {
LOG.info(
"Unknown application " + applicationAttemptId + " has completed!");
return;
}
// Release all the allocated, acquired, running containers
for (RMContainer rmContainer : attempt.getLiveContainers()) {
if (keepContainers && rmContainer.getState().equals(
RMContainerState.RUNNING)) {
// do not kill the running container in the case of work-preserving AM
// restart.
LOG.info("Skip killing " + rmContainer.getContainerId());
continue;
}
super.completedContainer(rmContainer, SchedulerUtils
.createAbnormalContainerStatus(rmContainer.getContainerId(),
SchedulerUtils.COMPLETED_APPLICATION),
RMContainerEventType.KILL);
}
// Release all reserved containers
for (RMContainer rmContainer : attempt.getReservedContainers()) {
super.completedContainer(rmContainer, SchedulerUtils
.createAbnormalContainerStatus(rmContainer.getContainerId(),
"Application Complete"), RMContainerEventType.KILL);
}
// Clean up pending requests, metrics etc.
attempt.stop(rmAppAttemptFinalState);
// Inform the queue
Queue queue = attempt.getQueue();
CSQueue csQueue = (CSQueue) queue;
if (!(csQueue instanceof AbstractLeafQueue)) {
LOG.error(
"Cannot finish application " + "from non-leaf queue: "
+ csQueue.getQueuePath());
} else {
csQueue.finishApplicationAttempt(attempt, csQueue.getQueuePath());
maxRunningEnforcer.untrackApp(attempt);
if (attempt.isRunnable()) {
maxRunningEnforcer.updateRunnabilityOnAppRemoval(attempt);
}
}
} finally {
writeLock.unlock();
}
}
/**
* Normalize a list of SchedulingRequest.
*
* @param asks scheduling request
*/
private void normalizeSchedulingRequests(List<SchedulingRequest> asks) {
if (asks == null) {
return;
}
Resource maxAllocation = getMaximumResourceCapability();
for (SchedulingRequest ask: asks) {
ResourceSizing sizing = ask.getResourceSizing();
if (sizing != null && sizing.getResources() != null) {
sizing.setResources(
getNormalizedResource(sizing.getResources(), maxAllocation));
}
}
}
@Override
@Lock(Lock.NoLock.class)
public Allocation allocate(ApplicationAttemptId applicationAttemptId,
List<ResourceRequest> ask, List<SchedulingRequest> schedulingRequests,
List<ContainerId> release, List<String> blacklistAdditions,
List<String> blacklistRemovals, ContainerUpdates updateRequests) {
FiCaSchedulerApp application = getApplicationAttempt(applicationAttemptId);
if (application == null) {
LOG.error("Calling allocate on removed or non existent application " +
applicationAttemptId.getApplicationId());
return EMPTY_ALLOCATION;
}
// The allocate may be the leftover from previous attempt, and it will
// impact current attempt, such as confuse the request and allocation for
// current attempt's AM container.
// Note outside precondition check for the attempt id may be
// outdated here, so double check it here is necessary.
if (!application.getApplicationAttemptId().equals(applicationAttemptId)) {
LOG.error("Calling allocate on previous or removed " +
"or non existent application attempt " + applicationAttemptId);
return EMPTY_ALLOCATION;
}
// Handle all container updates
handleContainerUpdates(application, updateRequests);
// Release containers
releaseContainers(release, application);
AbstractLeafQueue updateDemandForQueue = null;
// Sanity check for new allocation requests
normalizeResourceRequests(ask);
// Normalize scheduling requests
normalizeSchedulingRequests(schedulingRequests);
Allocation allocation;
// make sure we aren't stopping/removing the application
// when the allocate comes in
application.getWriteLock().lock();
try {
if (application.isStopped()) {
return EMPTY_ALLOCATION;
}
// Process resource requests
if (!ask.isEmpty() || (schedulingRequests != null && !schedulingRequests
.isEmpty())) {
if (LOG.isDebugEnabled()) {
LOG.debug(
"allocate: pre-update " + applicationAttemptId + " ask size ="
+ ask.size());
application.showRequests();
}
// Update application requests
if (application.updateResourceRequests(ask) || application
.updateSchedulingRequests(schedulingRequests)) {
updateDemandForQueue = (AbstractLeafQueue) application.getQueue();
}
if (LOG.isDebugEnabled()) {
LOG.debug("allocate: post-update");
application.showRequests();
}
}
application.updateBlacklist(blacklistAdditions, blacklistRemovals);
allocation = application.getAllocation(getResourceCalculator(),
getClusterResource(), getMinimumResourceCapability());
} finally {
application.getWriteLock().unlock();
}
if (updateDemandForQueue != null && !application
.isWaitingForAMContainer()) {
updateDemandForQueue.getOrderingPolicy().demandUpdated(application);
}
LOG.debug("Allocation for application {} : {} with cluster resource : {}",
applicationAttemptId, allocation, getClusterResource());
return allocation;
}
@Override
@Lock(Lock.NoLock.class)
public QueueInfo getQueueInfo(String queueName,
boolean includeChildQueues, boolean recursive)
throws IOException {
CSQueue queue = null;
queue = this.getQueue(queueName);
if (queue == null) {
if (isAmbiguous(queueName)) {
throw new IOException("Ambiguous queue reference: " + queueName
+ " please use full queue path instead.");
} else {
throw new IOException("Unknown queue: " + queueName);
}
}
return queue.getQueueInfo(includeChildQueues, recursive);
}
@Override
@Lock(Lock.NoLock.class)
public List<QueueUserACLInfo> getQueueUserAclInfo() {
UserGroupInformation user = null;
try {
user = UserGroupInformation.getCurrentUser();
} catch (IOException ioe) {
// should never happen
return new ArrayList<QueueUserACLInfo>();
}
return getRootQueue().getQueueUserAclInfo(user);
}
@Override
protected void nodeUpdate(RMNode rmNode) {
long begin = System.nanoTime();
readLock.lock();
try {
setLastNodeUpdateTime(Time.now());
super.nodeUpdate(rmNode);
} finally {
readLock.unlock();
}
// Try to do scheduling
if (!asyncSchedulingConf.isScheduleAsynchronously()) {
writeLock.lock();
try {
// reset allocation and reservation stats before we start doing any
// work
updateSchedulerHealth(lastNodeUpdateTime, rmNode.getNodeID(),
CSAssignment.NULL_ASSIGNMENT);
allocateContainersToNode(rmNode.getNodeID(), true);
} finally {
writeLock.unlock();
}
}
long latency = System.nanoTime() - begin;
CapacitySchedulerMetrics.getMetrics().addNodeUpdate(latency);
}
/**
* Process resource update on a node.
*/
private void updateNodeAndQueueResource(RMNode nm,
ResourceOption resourceOption) {
writeLock.lock();
try {
updateNodeResource(nm, resourceOption);
Resource clusterResource = getClusterResource();
getRootQueue().updateClusterResource(clusterResource,
new ResourceLimits(clusterResource));
} finally {
writeLock.unlock();
}
}
/**
* Process node labels update on a node.
*/
private void updateLabelsOnNode(NodeId nodeId,
Set<String> newLabels) {
FiCaSchedulerNode node = nodeTracker.getNode(nodeId);
if (null == node) {
return;
}
// Get new partition, we have only one partition per node
String newPartition;
if (newLabels.isEmpty()) {
newPartition = RMNodeLabelsManager.NO_LABEL;
} else{
newPartition = newLabels.iterator().next();
}
// old partition as well
String oldPartition = node.getPartition();
// Update resources of these containers
for (RMContainer rmContainer : node.getCopiedListOfRunningContainers()) {
FiCaSchedulerApp application = getApplicationAttempt(
rmContainer.getApplicationAttemptId());
if (null != application) {
application.nodePartitionUpdated(rmContainer, oldPartition,
newPartition);
} else{
LOG.warn("There's something wrong, some RMContainers running on"
+ " a node, but we cannot find SchedulerApplicationAttempt "
+ "for it. Node=" + node.getNodeID() + " applicationAttemptId="
+ rmContainer.getApplicationAttemptId());
continue;
}
}
// Unreserve container on this node
RMContainer reservedContainer = node.getReservedContainer();
if (null != reservedContainer) {
killReservedContainer(reservedContainer);
}
// Update node labels after we've done this
node.updateLabels(newLabels);
}
private void updateSchedulerHealth(long now, NodeId nodeId,
CSAssignment assignment) {
List<AssignmentInformation.AssignmentDetails> allocations =
assignment.getAssignmentInformation().getAllocationDetails();
List<AssignmentInformation.AssignmentDetails> reservations =
assignment.getAssignmentInformation().getReservationDetails();
// Get nodeId from allocated container if incoming argument is null.
NodeId updatedNodeid = (nodeId == null)
? allocations.get(allocations.size() - 1).rmContainer.getNodeId()
: nodeId;
if (!allocations.isEmpty()) {
ContainerId allocatedContainerId =
allocations.get(allocations.size() - 1).containerId;
String allocatedQueue = allocations.get(allocations.size() - 1).queue;
schedulerHealth.updateAllocation(now, updatedNodeid, allocatedContainerId,
allocatedQueue);
}
if (!reservations.isEmpty()) {
ContainerId reservedContainerId =
reservations.get(reservations.size() - 1).containerId;
String reservedQueue = reservations.get(reservations.size() - 1).queue;
schedulerHealth.updateReservation(now, updatedNodeid, reservedContainerId,
reservedQueue);
}
schedulerHealth.updateSchedulerReservationCounts(assignment
.getAssignmentInformation().getNumReservations());
schedulerHealth.updateSchedulerAllocationCounts(assignment
.getAssignmentInformation().getNumAllocations());
schedulerHealth.updateSchedulerRunDetails(now, assignment
.getAssignmentInformation().getAllocated(), assignment
.getAssignmentInformation().getReserved());
}
private boolean canAllocateMore(CSAssignment assignment, int offswitchCount,
int assignedContainers) {
// Current assignment shouldn't be empty
if (assignment == null
|| Resources.equals(assignment.getResource(), Resources.none())) {
return false;
}
// offswitch assignment should be under threshold
if (offswitchCount >= offswitchPerHeartbeatLimit) {
return false;
}
// And it should not be a reserved container
if (assignment.getAssignmentInformation().getNumReservations() > 0) {
return false;
}
// assignMultipleEnabled should be ON,
// and assignedContainers should be under threshold
return assignMultipleEnabled
&& (maxAssignPerHeartbeat == -1
|| assignedContainers < maxAssignPerHeartbeat);
}
private Map<NodeId, FiCaSchedulerNode> getNodesHeartbeated(String partition) {
Map<NodeId, FiCaSchedulerNode> nodesByPartition = new HashMap<>();
boolean printSkippedNodeLogging = isPrintSkippedNodeLogging(this);
List<FiCaSchedulerNode> nodes = nodeTracker
.getNodesPerPartition(partition);
if (nodes != null && !nodes.isEmpty()) {
//Filter for node heartbeat too long
nodes.stream()
.filter(node ->
!shouldSkipNodeSchedule(node, this, printSkippedNodeLogging))
.forEach(n -> nodesByPartition.put(n.getNodeID(), n));
}
if (printSkippedNodeLogging) {
printedVerboseLoggingForAsyncScheduling = true;
}
return nodesByPartition;
}
private CandidateNodeSet<FiCaSchedulerNode> getCandidateNodeSet(
String partition) {
CandidateNodeSet<FiCaSchedulerNode> candidates = null;
Map<NodeId, FiCaSchedulerNode> nodesByPartition
= getNodesHeartbeated(partition);
if (!nodesByPartition.isEmpty()) {
candidates = new SimpleCandidateNodeSet<FiCaSchedulerNode>(
nodesByPartition, partition);
}
return candidates;
}
private CandidateNodeSet<FiCaSchedulerNode> getCandidateNodeSet(
FiCaSchedulerNode node) {
CandidateNodeSet<FiCaSchedulerNode> candidates = null;
candidates = new SimpleCandidateNodeSet<>(node);
if (multiNodePlacementEnabled) {
Map<NodeId, FiCaSchedulerNode> nodesByPartition =
getNodesHeartbeated(node.getPartition());
if (!nodesByPartition.isEmpty()) {
candidates = new SimpleCandidateNodeSet<FiCaSchedulerNode>(
nodesByPartition, node.getPartition());
}
}
return candidates;
}
/**
* We need to make sure when doing allocation, Node should be existed
* And we will construct a {@link CandidateNodeSet} before proceeding
*/
private void allocateContainersToNode(NodeId nodeId,
boolean withNodeHeartbeat) {
FiCaSchedulerNode node = getNode(nodeId);
if (null != node) {
int offswitchCount = 0;
int assignedContainers = 0;
CandidateNodeSet<FiCaSchedulerNode> candidates =
getCandidateNodeSet(node);
CSAssignment assignment = allocateContainersToNode(candidates,
withNodeHeartbeat);
// Only check if we can allocate more container on the same node when
// scheduling is triggered by node heartbeat
if (null != assignment && withNodeHeartbeat) {
if (assignment.getType() == NodeType.OFF_SWITCH) {
offswitchCount++;
}
if (Resources.greaterThan(calculator, getClusterResource(),
assignment.getResource(), Resources.none())) {
assignedContainers++;
}
while (canAllocateMore(assignment, offswitchCount,
assignedContainers)) {
// Try to see if it is possible to allocate multiple container for
// the same node heartbeat
assignment = allocateContainersToNode(candidates, true);
if (null != assignment
&& assignment.getType() == NodeType.OFF_SWITCH) {
offswitchCount++;
}
if (null != assignment
&& Resources.greaterThan(calculator, getClusterResource(),
assignment.getResource(), Resources.none())) {
assignedContainers++;
}
}
if (offswitchCount >= offswitchPerHeartbeatLimit) {
LOG.debug("Assigned maximum number of off-switch containers: {},"
+ " assignments so far: {}", offswitchCount, assignment);
}
}
}
}
/*
* Logics of allocate container on a single node (Old behavior)
*/
private CSAssignment allocateContainerOnSingleNode(
CandidateNodeSet<FiCaSchedulerNode> candidates, FiCaSchedulerNode node,
boolean withNodeHeartbeat) {
LOG.debug("Trying to schedule on node: {}, available: {}",
node.getNodeName(), node.getUnallocatedResource());
// Backward compatible way to make sure previous behavior which allocation
// driven by node heartbeat works.
if (getNode(node.getNodeID()) != node) {
LOG.error("Trying to schedule on a removed node, please double check, "
+ "nodeId=" + node.getNodeID());
ActivitiesLogger.QUEUE.recordQueueActivity(activitiesManager, node,
"", getRootQueue().getQueuePath(), ActivityState.REJECTED,
ActivityDiagnosticConstant.INIT_CHECK_SINGLE_NODE_REMOVED);
ActivitiesLogger.NODE.finishSkippedNodeAllocation(activitiesManager,
node);
return null;
}
// Assign new containers...
// 1. Check for reserved applications
// 2. Schedule if there are no reservations
RMContainer reservedContainer = node.getReservedContainer();
if (reservedContainer != null) {
allocateFromReservedContainer(node, withNodeHeartbeat, reservedContainer);
// Do not schedule if there are any reservations to fulfill on the node
LOG.debug("Skipping scheduling since node {} is reserved by"
+ " application {}", node.getNodeID(), reservedContainer.
getContainerId().getApplicationAttemptId());
return null;
}
// First check if we can schedule
// When this time look at one node only, try schedule if the node
// has any available or killable resource
if (calculator.computeAvailableContainers(Resources
.add(node.getUnallocatedResource(), node.getTotalKillableResources()),
minimumAllocation) <= 0) {
LOG.debug("This node " + node.getNodeID() + " doesn't have sufficient "
+ "available or preemptible resource for minimum allocation");
ActivitiesLogger.QUEUE.recordQueueActivity(activitiesManager, node,
"", getRootQueue().getQueuePath(), ActivityState.REJECTED,
ActivityDiagnosticConstant.
INIT_CHECK_SINGLE_NODE_RESOURCE_INSUFFICIENT);
ActivitiesLogger.NODE.finishSkippedNodeAllocation(activitiesManager,
node);
return null;
}
return allocateOrReserveNewContainers(candidates, withNodeHeartbeat);
}
private void allocateFromReservedContainer(FiCaSchedulerNode node,
boolean withNodeHeartbeat, RMContainer reservedContainer) {
FiCaSchedulerApp reservedApplication = getCurrentAttemptForContainer(
reservedContainer.getContainerId());
if (reservedApplication == null) {
LOG.error(
"Trying to schedule for a finished app, please double check. nodeId="
+ node.getNodeID() + " container=" + reservedContainer
.getContainerId());
return;
}
// Try to fulfill the reservation
LOG.debug("Trying to fulfill reservation for application {} on node: {}",
reservedApplication.getApplicationId(), node.getNodeID());
AbstractLeafQueue queue = ((AbstractLeafQueue) reservedApplication.getQueue());
CSAssignment assignment = queue.assignContainers(getClusterResource(),
new SimpleCandidateNodeSet<>(node),
// TODO, now we only consider limits for parent for non-labeled
// resources, should consider labeled resources as well.
new ResourceLimits(labelManager
.getResourceByLabel(RMNodeLabelsManager.NO_LABEL,
getClusterResource())),
SchedulingMode.RESPECT_PARTITION_EXCLUSIVITY);
if (assignment.isFulfilledReservation()) {
if (withNodeHeartbeat) {
// Only update SchedulerHealth in sync scheduling, existing
// Data structure of SchedulerHealth need to be updated for
// Async mode
updateSchedulerHealth(lastNodeUpdateTime, node.getNodeID(),
assignment);
}
schedulerHealth.updateSchedulerFulfilledReservationCounts(1);
ActivitiesLogger.QUEUE.recordQueueActivity(activitiesManager, node,
queue.getParent().getQueuePath(), queue.getQueuePath(),
ActivityState.ACCEPTED, ActivityDiagnosticConstant.EMPTY);
ActivitiesLogger.NODE.finishAllocatedNodeAllocation(activitiesManager,
node, reservedContainer.getContainerId(),
AllocationState.ALLOCATED_FROM_RESERVED);
} else if (assignment.getAssignmentInformation().getNumReservations() > 0) {
ActivitiesLogger.QUEUE.recordQueueActivity(activitiesManager, node,
queue.getParent().getQueuePath(), queue.getQueuePath(),
ActivityState.RE_RESERVED, ActivityDiagnosticConstant.EMPTY);
ActivitiesLogger.NODE.finishAllocatedNodeAllocation(activitiesManager,
node, reservedContainer.getContainerId(), AllocationState.RESERVED);
}
assignment.setSchedulingMode(
SchedulingMode.RESPECT_PARTITION_EXCLUSIVITY);
submitResourceCommitRequest(getClusterResource(), assignment);
}
private CSAssignment allocateOrReserveNewContainers(
CandidateNodeSet<FiCaSchedulerNode> candidates,
boolean withNodeHeartbeat) {
CSAssignment assignment = getRootQueue().assignContainers(
getClusterResource(), candidates, new ResourceLimits(labelManager
.getResourceByLabel(candidates.getPartition(),
getClusterResource())),
SchedulingMode.RESPECT_PARTITION_EXCLUSIVITY);
assignment.setSchedulingMode(SchedulingMode.RESPECT_PARTITION_EXCLUSIVITY);
submitResourceCommitRequest(getClusterResource(), assignment);
if (Resources.greaterThan(calculator, getClusterResource(),
assignment.getResource(), Resources.none())) {
FiCaSchedulerNode node = CandidateNodeSetUtils.getSingleNode(candidates);
NodeId nodeId = null;
if (node != null) {
nodeId = node.getNodeID();
}
if (withNodeHeartbeat) {
updateSchedulerHealth(lastNodeUpdateTime, nodeId, assignment);
}
return assignment;
}
// Only do non-exclusive allocation when node has node-labels.
if (StringUtils.equals(candidates.getPartition(),
RMNodeLabelsManager.NO_LABEL)) {
return null;
}
// Only do non-exclusive allocation when the node-label supports that
try {
if (rmContext.getNodeLabelManager().isExclusiveNodeLabel(
candidates.getPartition())) {
return null;
}
} catch (IOException e) {
LOG.warn(
"Exception when trying to get exclusivity of node label=" + candidates
.getPartition(), e);
return null;
}
// Try to use NON_EXCLUSIVE
assignment = getRootQueue().assignContainers(getClusterResource(),
candidates,
// TODO, now we only consider limits for parent for non-labeled
// resources, should consider labeled resources as well.
new ResourceLimits(labelManager
.getResourceByLabel(RMNodeLabelsManager.NO_LABEL,
getClusterResource())),
SchedulingMode.IGNORE_PARTITION_EXCLUSIVITY);
assignment.setSchedulingMode(SchedulingMode.IGNORE_PARTITION_EXCLUSIVITY);
submitResourceCommitRequest(getClusterResource(), assignment);
return assignment;
}
/*
* New behavior, allocate containers considering multiple nodes
*/
private CSAssignment allocateContainersOnMultiNodes(
CandidateNodeSet<FiCaSchedulerNode> candidates) {
// Try to allocate from reserved containers
for (FiCaSchedulerNode node : candidates.getAllNodes().values()) {
RMContainer reservedContainer = node.getReservedContainer();
if (reservedContainer != null) {
allocateFromReservedContainer(node, false, reservedContainer);
}
}
return allocateOrReserveNewContainers(candidates, false);
}
@VisibleForTesting
CSAssignment allocateContainersToNode(
CandidateNodeSet<FiCaSchedulerNode> candidates,
boolean withNodeHeartbeat) {
if (rmContext.isWorkPreservingRecoveryEnabled() && !rmContext
.isSchedulerReadyForAllocatingContainers()) {
return null;
}
long startTime = System.nanoTime();
// Backward compatible way to make sure previous behavior which allocation
// driven by node heartbeat works.
FiCaSchedulerNode node = CandidateNodeSetUtils.getSingleNode(candidates);
// We have two different logics to handle allocation on single node / multi
// nodes.
CSAssignment assignment;
if (!multiNodePlacementEnabled) {
ActivitiesLogger.NODE.startNodeUpdateRecording(activitiesManager,
node.getNodeID());
assignment = allocateContainerOnSingleNode(candidates,
node, withNodeHeartbeat);
ActivitiesLogger.NODE.finishNodeUpdateRecording(activitiesManager,
node.getNodeID(), candidates.getPartition());
} else{
ActivitiesLogger.NODE.startNodeUpdateRecording(activitiesManager,
ActivitiesManager.EMPTY_NODE_ID);
assignment = allocateContainersOnMultiNodes(candidates);
ActivitiesLogger.NODE.finishNodeUpdateRecording(activitiesManager,
ActivitiesManager.EMPTY_NODE_ID, candidates.getPartition());
}
if (assignment != null && assignment.getAssignmentInformation() != null
&& assignment.getAssignmentInformation().getNumAllocations() > 0) {
long allocateTime = System.nanoTime() - startTime;
CapacitySchedulerMetrics.getMetrics().addAllocate(allocateTime);
}
return assignment;
}
/**
* This method extracts the actual queue name from an app add event.
* Currently unfortunately ApplicationPlacementContext and
* ApplicationSubmissionContext are used in a quite erratic way, this method
* helps to get the proper placement path for the queue if placement context
* is provided
* @param appAddedEvent The application add event with details about the app
* @return The name of the queue the application should be added
*/
private String getAddedAppQueueName(AppAddedSchedulerEvent appAddedEvent) {
//appAddedEvent uses the queue from ApplicationSubmissionContext but in
//the case of CS it may be only a leaf name due to legacy reasons
String ret = appAddedEvent.getQueue();
ApplicationPlacementContext placementContext =
appAddedEvent.getPlacementContext();
//If we have a placement context, it means a mapping rule made a decision
//about the queue placement, so we use those data, it is supposed to be in
//sync with the ApplicationSubmissionContext and appAddedEvent.getQueue, but
//because of the aforementioned legacy reasons these two may only contain
//the leaf queue name.
if (placementContext != null) {
String leafName = placementContext.getQueue();
String parentName = placementContext.getParentQueue();
if (leafName != null) {
//building the proper queue path from the parent and leaf queue name
ret = placementContext.hasParentQueue() ?
(parentName + "." + leafName) : leafName;
}
}
return ret;
}
@Override
public void handle(SchedulerEvent event) {
switch(event.getType()) {
case NODE_ADDED:
{
NodeAddedSchedulerEvent nodeAddedEvent = (NodeAddedSchedulerEvent)event;
addNode(nodeAddedEvent.getAddedRMNode());
recoverContainersOnNode(nodeAddedEvent.getContainerReports(),
nodeAddedEvent.getAddedRMNode());
}
break;
case NODE_REMOVED:
{
NodeRemovedSchedulerEvent nodeRemovedEvent = (NodeRemovedSchedulerEvent)event;
removeNode(nodeRemovedEvent.getRemovedRMNode());
}
break;
case NODE_RESOURCE_UPDATE:
{
NodeResourceUpdateSchedulerEvent nodeResourceUpdatedEvent =
(NodeResourceUpdateSchedulerEvent)event;
updateNodeAndQueueResource(nodeResourceUpdatedEvent.getRMNode(),
nodeResourceUpdatedEvent.getResourceOption());
}
break;
case NODE_LABELS_UPDATE:
{
NodeLabelsUpdateSchedulerEvent labelUpdateEvent =
(NodeLabelsUpdateSchedulerEvent) event;
updateNodeLabelsAndQueueResource(labelUpdateEvent);
}
break;
case NODE_ATTRIBUTES_UPDATE:
{
NodeAttributesUpdateSchedulerEvent attributeUpdateEvent =
(NodeAttributesUpdateSchedulerEvent) event;
updateNodeAttributes(attributeUpdateEvent);
}
break;
case NODE_UPDATE:
{
NodeUpdateSchedulerEvent nodeUpdatedEvent = (NodeUpdateSchedulerEvent)event;
updateSchedulerNodeHBIntervalMetrics(nodeUpdatedEvent);
nodeUpdate(nodeUpdatedEvent.getRMNode());
}
break;
case APP_ADDED:
{
AppAddedSchedulerEvent appAddedEvent = (AppAddedSchedulerEvent) event;
String queueName = resolveReservationQueueName(
getAddedAppQueueName(appAddedEvent), appAddedEvent.getApplicationId(),
appAddedEvent.getReservationID(), appAddedEvent.getIsAppRecovering());
if (queueName != null) {
if (!appAddedEvent.getIsAppRecovering()) {
addApplication(appAddedEvent.getApplicationId(), queueName,
appAddedEvent.getUser(), appAddedEvent.getApplicatonPriority(),
appAddedEvent.getPlacementContext(),
appAddedEvent.isUnmanagedAM());
} else {
addApplicationOnRecovery(appAddedEvent.getApplicationId(), queueName,
appAddedEvent.getUser(), appAddedEvent.getApplicatonPriority(),
appAddedEvent.getPlacementContext(),
appAddedEvent.isUnmanagedAM());
}
}
}
break;
case APP_REMOVED:
{
AppRemovedSchedulerEvent appRemovedEvent = (AppRemovedSchedulerEvent)event;
doneApplication(appRemovedEvent.getApplicationID(),
appRemovedEvent.getFinalState());
}
break;
case APP_ATTEMPT_ADDED:
{
AppAttemptAddedSchedulerEvent appAttemptAddedEvent =
(AppAttemptAddedSchedulerEvent) event;
addApplicationAttempt(appAttemptAddedEvent.getApplicationAttemptId(),
appAttemptAddedEvent.getTransferStateFromPreviousAttempt(),
appAttemptAddedEvent.getIsAttemptRecovering());
}
break;
case APP_ATTEMPT_REMOVED:
{
AppAttemptRemovedSchedulerEvent appAttemptRemovedEvent =
(AppAttemptRemovedSchedulerEvent) event;
doneApplicationAttempt(appAttemptRemovedEvent.getApplicationAttemptID(),
appAttemptRemovedEvent.getFinalAttemptState(),
appAttemptRemovedEvent.getKeepContainersAcrossAppAttempts());
}
break;
case CONTAINER_EXPIRED:
{
ContainerExpiredSchedulerEvent containerExpiredEvent =
(ContainerExpiredSchedulerEvent) event;
ContainerId containerId = containerExpiredEvent.getContainerId();
if (containerExpiredEvent.isIncrease()) {
rollbackContainerUpdate(containerId);
} else {
completedContainer(getRMContainer(containerId),
SchedulerUtils.createAbnormalContainerStatus(
containerId,
SchedulerUtils.EXPIRED_CONTAINER),
RMContainerEventType.EXPIRE);
}
}
break;
case RELEASE_CONTAINER:
{
RMContainer container = ((ReleaseContainerEvent) event).getContainer();
completedContainer(container,
SchedulerUtils.createAbnormalContainerStatus(
container.getContainerId(),
SchedulerUtils.RELEASED_CONTAINER),
RMContainerEventType.RELEASED);
}
break;
case KILL_RESERVED_CONTAINER:
{
ContainerPreemptEvent killReservedContainerEvent =
(ContainerPreemptEvent) event;
RMContainer container = killReservedContainerEvent.getContainer();
killReservedContainer(container);
}
break;
case MARK_CONTAINER_FOR_PREEMPTION:
{
ContainerPreemptEvent preemptContainerEvent =
(ContainerPreemptEvent)event;
ApplicationAttemptId aid = preemptContainerEvent.getAppId();
RMContainer containerToBePreempted = preemptContainerEvent.getContainer();
markContainerForPreemption(aid, containerToBePreempted);
}
break;
case MARK_CONTAINER_FOR_KILLABLE:
{
ContainerPreemptEvent containerKillableEvent = (ContainerPreemptEvent)event;
RMContainer killableContainer = containerKillableEvent.getContainer();
markContainerForKillable(killableContainer);
}
break;
case MARK_CONTAINER_FOR_NONKILLABLE:
{
if (isLazyPreemptionEnabled) {
ContainerPreemptEvent cancelKillContainerEvent =
(ContainerPreemptEvent) event;
markContainerForNonKillable(cancelKillContainerEvent.getContainer());
}
}
break;
case MANAGE_QUEUE:
{
QueueManagementChangeEvent queueManagementChangeEvent =
(QueueManagementChangeEvent) event;
ParentQueue parentQueue = queueManagementChangeEvent.getParentQueue();
try {
final List<QueueManagementChange> queueManagementChanges =
queueManagementChangeEvent.getQueueManagementChanges();
((ManagedParentQueue) parentQueue)
.validateAndApplyQueueManagementChanges(queueManagementChanges);
} catch (SchedulerDynamicEditException sde) {
LOG.error("Queue Management Change event cannot be applied for "
+ "parent queue : " + parentQueue.getQueuePath(), sde);
} catch (IOException ioe) {
LOG.error("Queue Management Change event cannot be applied for "
+ "parent queue : " + parentQueue.getQueuePath(), ioe);
}
}
break;
case AUTO_QUEUE_DELETION:
try {
AutoCreatedQueueDeletionEvent autoCreatedQueueDeletionEvent =
(AutoCreatedQueueDeletionEvent) event;
removeAutoCreatedQueue(autoCreatedQueueDeletionEvent.
getCheckQueue());
} catch (SchedulerDynamicEditException sde) {
LOG.error("Dynamic queue deletion cannot be applied for "
+ "queue : ", sde);
}
break;
default:
LOG.error("Invalid eventtype " + event.getType() + ". Ignoring!");
}
}
private void removeAutoCreatedQueue(CSQueue checkQueue)
throws SchedulerDynamicEditException{
writeLock.lock();
try {
if (checkQueue instanceof AbstractCSQueue
&& ((AbstractCSQueue) checkQueue).isInactiveDynamicQueue()) {
removeQueue(checkQueue);
}
} finally {
writeLock.unlock();
}
}
private void updateNodeAttributes(
NodeAttributesUpdateSchedulerEvent attributeUpdateEvent) {
writeLock.lock();
try {
for (Entry<String, Set<NodeAttribute>> entry : attributeUpdateEvent
.getUpdatedNodeToAttributes().entrySet()) {
String hostname = entry.getKey();
Set<NodeAttribute> attributes = entry.getValue();
List<NodeId> nodeIds = nodeTracker.getNodeIdsByResourceName(hostname);
updateAttributesOnNode(nodeIds, attributes);
}
} finally {
writeLock.unlock();
}
}
private void updateAttributesOnNode(List<NodeId> nodeIds,
Set<NodeAttribute> attributes) {
nodeIds.forEach((k) -> {
SchedulerNode node = nodeTracker.getNode(k);
node.updateNodeAttributes(attributes);
});
}
/**
* Process node labels update.
*/
private void updateNodeLabelsAndQueueResource(
NodeLabelsUpdateSchedulerEvent labelUpdateEvent) {
writeLock.lock();
try {
Set<String> updateLabels = new HashSet<String>();
for (Entry<NodeId, Set<String>> entry : labelUpdateEvent
.getUpdatedNodeToLabels().entrySet()) {
NodeId id = entry.getKey();
Set<String> labels = entry.getValue();
FiCaSchedulerNode node = nodeTracker.getNode(id);
if (node != null) {
// Update old partition to list.
updateLabels.add(node.getPartition());
}
updateLabelsOnNode(id, labels);
updateLabels.addAll(labels);
}
refreshLabelToNodeCache(updateLabels);
Resource clusterResource = getClusterResource();
getRootQueue().updateClusterResource(clusterResource,
new ResourceLimits(clusterResource));
} finally {
writeLock.unlock();
}
}
private void refreshLabelToNodeCache(Set<String> updateLabels) {
Map<String, Set<NodeId>> labelMapping = labelManager
.getLabelsToNodes(updateLabels);
for (String label : updateLabels) {
Set<NodeId> nodes = labelMapping.get(label);
if (nodes == null) {
continue;
}
nodeTracker.updateNodesPerPartition(label, nodes);
}
}
/**
* Add node to nodeTracker. Used when validating CS configuration by instantiating a new
* CS instance.
* @param nodesToAdd node to be added
*/
public void addNodes(List<FiCaSchedulerNode> nodesToAdd) {
writeLock.lock();
try {
for (FiCaSchedulerNode node : nodesToAdd) {
nodeTracker.addNode(node);
}
} finally {
writeLock.unlock();
}
}
private void addNode(RMNode nodeManager) {
writeLock.lock();
try {
FiCaSchedulerNode schedulerNode = new FiCaSchedulerNode(nodeManager,
usePortForNodeName, nodeManager.getNodeLabels());
nodeTracker.addNode(schedulerNode);
// update this node to node label manager
if (labelManager != null) {
labelManager.activateNode(nodeManager.getNodeID(),
schedulerNode.getTotalResource());
}
// recover attributes from store if any.
if (rmContext.getNodeAttributesManager() != null) {
rmContext.getNodeAttributesManager()
.refreshNodeAttributesToScheduler(schedulerNode.getNodeID());
}
Resource clusterResource = getClusterResource();
getRootQueue().updateClusterResource(clusterResource,
new ResourceLimits(clusterResource));
LOG.info(
"Added node " + nodeManager.getNodeAddress() + " clusterResource: "
+ clusterResource);
if (asyncSchedulingConf.isScheduleAsynchronously() && getNumClusterNodes() == 1) {
for (AsyncScheduleThread t : asyncSchedulingConf.asyncSchedulerThreads) {
t.beginSchedule();
}
}
} finally {
writeLock.unlock();
}
}
private void removeNode(RMNode nodeInfo) {
writeLock.lock();
try {
// update this node to node label manager
if (labelManager != null) {
labelManager.deactivateNode(nodeInfo.getNodeID());
}
NodeId nodeId = nodeInfo.getNodeID();
FiCaSchedulerNode node = nodeTracker.getNode(nodeId);
if (node == null) {
LOG.error("Attempting to remove non-existent node " + nodeId);
return;
}
// Remove running containers
List<RMContainer> runningContainers =
node.getCopiedListOfRunningContainers();
for (RMContainer container : runningContainers) {
super.completedContainer(container, SchedulerUtils
.createAbnormalContainerStatus(container.getContainerId(),
SchedulerUtils.LOST_CONTAINER), RMContainerEventType.KILL);
node.releaseContainer(container.getContainerId(), true);
}
// Remove reservations, if any
RMContainer reservedContainer = node.getReservedContainer();
if (reservedContainer != null) {
super.completedContainer(reservedContainer, SchedulerUtils
.createAbnormalContainerStatus(reservedContainer.getContainerId(),
SchedulerUtils.LOST_CONTAINER), RMContainerEventType.KILL);
}
nodeTracker.removeNode(nodeId);
Resource clusterResource = getClusterResource();
getRootQueue().updateClusterResource(clusterResource,
new ResourceLimits(clusterResource));
int numNodes = nodeTracker.nodeCount();
asyncSchedulingConf.nodeRemoved(numNodes);
LOG.info(
"Removed node " + nodeInfo.getNodeAddress() + " clusterResource: "
+ getClusterResource());
} finally {
writeLock.unlock();
}
}
private void updateSchedulerNodeHBIntervalMetrics(
NodeUpdateSchedulerEvent nodeUpdatedEvent) {
// Add metrics for evaluating the time difference between heartbeats.
SchedulerNode node =
nodeTracker.getNode(nodeUpdatedEvent.getRMNode().getNodeID());
if (node != null) {
long lastInterval =
Time.monotonicNow() - node.getLastHeartbeatMonotonicTime();
CapacitySchedulerMetrics.getMetrics()
.addSchedulerNodeHBInterval(lastInterval);
}
}
@Override
protected void completedContainerInternal(
RMContainer rmContainer, ContainerStatus containerStatus,
RMContainerEventType event) {
Container container = rmContainer.getContainer();
ContainerId containerId = container.getId();
// Get the application for the finished container
FiCaSchedulerApp application = getCurrentAttemptForContainer(
container.getId());
ApplicationId appId =
containerId.getApplicationAttemptId().getApplicationId();
if (application == null) {
LOG.info(
"Container " + container + " of" + " finished application " + appId
+ " completed with event " + event);
return;
}
// Get the node on which the container was allocated
FiCaSchedulerNode node = getNode(container.getNodeId());
if (null == node) {
LOG.info("Container " + container + " of" + " removed node " + container
.getNodeId() + " completed with event " + event);
return;
}
// Inform the queue
AbstractLeafQueue queue = (AbstractLeafQueue) application.getQueue();
queue.completedContainer(getClusterResource(), application, node,
rmContainer, containerStatus, event, null, true);
}
@Lock(Lock.NoLock.class)
@VisibleForTesting
@Override
public FiCaSchedulerApp getApplicationAttempt(
ApplicationAttemptId applicationAttemptId) {
return super.getApplicationAttempt(applicationAttemptId);
}
@Lock(Lock.NoLock.class)
public FiCaSchedulerNode getNode(NodeId nodeId) {
return nodeTracker.getNode(nodeId);
}
@Lock(Lock.NoLock.class)
public List<FiCaSchedulerNode> getAllNodes() {
return nodeTracker.getAllNodes();
}
@Override
@Lock(Lock.NoLock.class)
public void recover(RMState state) throws Exception {
// NOT IMPLEMENTED
}
@Override
public void killReservedContainer(RMContainer container) {
LOG.debug("{}:{}", SchedulerEventType.KILL_RESERVED_CONTAINER, container);
// To think: What happens if this is no longer a reserved container, for
// e.g if the reservation became an allocation.
super.completedContainer(container,
SchedulerUtils.createAbnormalContainerStatus(
container.getContainerId(),
SchedulerUtils.UNRESERVED_CONTAINER),
RMContainerEventType.KILL);
}
@Override
public void markContainerForPreemption(ApplicationAttemptId aid,
RMContainer cont) {
LOG.debug("{}: appAttempt:{} container:{}",
SchedulerEventType.MARK_CONTAINER_FOR_PREEMPTION, aid, cont);
FiCaSchedulerApp app = getApplicationAttempt(aid);
if (app != null) {
app.markContainerForPreemption(cont.getContainerId());
}
}
@VisibleForTesting
@Override
public void killContainer(RMContainer container) {
markContainerForKillable(container);
}
public void markContainerForKillable(
RMContainer killableContainer) {
writeLock.lock();
try {
LOG.debug("{}: container {}",
SchedulerEventType.MARK_CONTAINER_FOR_KILLABLE, killableContainer);
if (!isLazyPreemptionEnabled) {
super.completedContainer(killableContainer, SchedulerUtils
.createPreemptedContainerStatus(killableContainer.getContainerId(),
SchedulerUtils.PREEMPTED_CONTAINER), RMContainerEventType.KILL);
} else {
FiCaSchedulerNode node = getSchedulerNode(
killableContainer.getAllocatedNode());
FiCaSchedulerApp application = getCurrentAttemptForContainer(
killableContainer.getContainerId());
node.markContainerToKillable(killableContainer.getContainerId());
// notify PreemptionManager
// Get the application for the finished container
if (null != application) {
String leafQueuePath = application.getCSLeafQueue().getQueuePath();
getPreemptionManager().addKillableContainer(
new KillableContainer(killableContainer, node.getPartition(),
leafQueuePath));
}
}
} finally {
writeLock.unlock();
}
}
private void markContainerForNonKillable(
RMContainer nonKillableContainer) {
writeLock.lock();
try {
LOG.debug("{}: container {}", SchedulerEventType.
MARK_CONTAINER_FOR_NONKILLABLE, nonKillableContainer);
FiCaSchedulerNode node = getSchedulerNode(
nonKillableContainer.getAllocatedNode());
FiCaSchedulerApp application = getCurrentAttemptForContainer(
nonKillableContainer.getContainerId());
node.markContainerToNonKillable(nonKillableContainer.getContainerId());
// notify PreemptionManager
// Get the application for the finished container
if (null != application) {
String leafQueuePath = application.getCSLeafQueue().getQueuePath();
getPreemptionManager().removeKillableContainer(
new KillableContainer(nonKillableContainer, node.getPartition(),
leafQueuePath));
}
} finally {
writeLock.unlock();
}
}
@Override
public boolean checkAccess(UserGroupInformation callerUGI,
QueueACL acl, String queueName) {
CSQueue queue = getQueue(queueName);
if (queueName.startsWith("root.")) {
// can only check proper ACLs if the path is fully qualified
while (queue == null) {
int sepIndex = queueName.lastIndexOf(".");
String parentName = queueName.substring(0, sepIndex);
if (LOG.isDebugEnabled()) {
LOG.debug("Queue {} does not exist, checking parent {}",
queueName, parentName);
}
queueName = parentName;
queue = queueManager.getQueue(queueName);
}
}
if (queue == null) {
LOG.debug("ACL not found for queue access-type {} for queue {}",
acl, queueName);
return false;
}
return queue.hasAccess(acl, callerUGI);
}
@Override
public List<ApplicationAttemptId> getAppsInQueue(String queueName) {
CSQueue queue = getQueue(queueName);
if (queue == null) {
return null;
}
List<ApplicationAttemptId> apps = new ArrayList<ApplicationAttemptId>();
queue.collectSchedulerApplications(apps);
return apps;
}
public boolean isSystemAppsLimitReached() {
if (getRootQueue().getNumApplications() < conf
.getMaximumSystemApplications()) {
return false;
}
return true;
}
private String getDefaultReservationQueueName(String planQueueName) {
return planQueueName + ReservationConstants.DEFAULT_QUEUE_SUFFIX;
}
private String resolveReservationQueueName(String queueName,
ApplicationId applicationId, ReservationId reservationID,
boolean isRecovering) {
readLock.lock();
try {
CSQueue queue = getQueue(queueName);
// Check if the queue is a plan queue
if ((queue == null) || !(queue instanceof PlanQueue)) {
return queueName;
}
if (reservationID != null) {
String resQName = reservationID.toString();
queue = getQueue(resQName);
if (queue == null) {
// reservation has terminated during failover
if (isRecovering && conf.getMoveOnExpiry(
getQueue(queueName).getQueuePath())) {
// move to the default child queue of the plan
return getDefaultReservationQueueName(queueName);
}
String message = "Application " + applicationId
+ " submitted to a reservation which is not currently active: "
+ resQName;
this.rmContext.getDispatcher().getEventHandler().handle(
new RMAppEvent(applicationId, RMAppEventType.APP_REJECTED,
message));
return null;
}
if (!queue.getParent().getQueuePath().equals(queueName)) {
String message =
"Application: " + applicationId + " submitted to a reservation "
+ resQName + " which does not belong to the specified queue: "
+ queueName;
this.rmContext.getDispatcher().getEventHandler().handle(
new RMAppEvent(applicationId, RMAppEventType.APP_REJECTED,
message));
return null;
}
// use the reservation queue to run the app
queueName = resQName;
} else{
// use the default child queue of the plan for unreserved apps
queueName = getDefaultReservationQueueName(queueName);
}
return queueName;
} finally {
readLock.unlock();
}
}
@Override
public void removeQueue(String queueName)
throws SchedulerDynamicEditException {
writeLock.lock();
try {
queueManager.removeLegacyDynamicQueue(queueName);
} finally {
writeLock.unlock();
}
}
public void removeQueue(CSQueue queue)
throws SchedulerDynamicEditException {
writeLock.lock();
try {
LOG.info("Removing queue: " + queue.getQueuePath());
if (!((AbstractCSQueue)queue).isDynamicQueue()) {
throw new SchedulerDynamicEditException(
"The queue that we are asked "
+ "to remove (" + queue.getQueuePath()
+ ") is not a DynamicQueue");
}
if (!((AbstractCSQueue) queue).isEligibleForAutoDeletion()) {
LOG.warn("Queue " + queue.getQueuePath() +
" is marked for deletion, but not eligible for deletion");
return;
}
ParentQueue parentQueue = (ParentQueue)queue.getParent();
if (parentQueue != null) {
((ParentQueue) queue.getParent()).removeChildQueue(queue);
} else {
throw new SchedulerDynamicEditException(
"The queue " + queue.getQueuePath()
+ " can't be removed because it's parent is null");
}
if (parentQueue.childQueues.contains(queue) ||
queueManager.getQueue(queue.getQueuePath()) != null) {
throw new SchedulerDynamicEditException(
"The queue " + queue.getQueuePath()
+ " has not been removed normally.");
}
} finally {
writeLock.unlock();
}
}
@Override
public void addQueue(Queue queue)
throws SchedulerDynamicEditException, IOException {
writeLock.lock();
try {
queueManager.addLegacyDynamicQueue(queue);
} finally {
writeLock.unlock();
}
}
@Override
public void setEntitlement(String inQueue, QueueEntitlement entitlement)
throws YarnException {
writeLock.lock();
try {
AbstractLeafQueue queue = this.queueManager.getAndCheckLeafQueue(inQueue);
AbstractManagedParentQueue parent =
(AbstractManagedParentQueue) queue.getParent();
if (!(AbstractAutoCreatedLeafQueue.class.isAssignableFrom(
queue.getClass()))) {
throw new SchedulerDynamicEditException(
"Entitlement can not be" + " modified dynamically since queue "
+ inQueue + " is not a AutoCreatedLeafQueue");
}
if (parent == null || !(AbstractManagedParentQueue.class.isAssignableFrom(
parent.getClass()))) {
throw new SchedulerDynamicEditException(
"The parent of AutoCreatedLeafQueue " + inQueue
+ " must be a PlanQueue/ManagedParentQueue");
}
AbstractAutoCreatedLeafQueue newQueue =
(AbstractAutoCreatedLeafQueue) queue;
parent.validateQueueEntitlementChange(newQueue, entitlement);
newQueue.setEntitlement(entitlement);
LOG.info("Set entitlement for AutoCreatedLeafQueue " + inQueue + " to "
+ queue.getCapacity() + " request was (" + entitlement.getCapacity()
+ ")");
} finally {
writeLock.unlock();
}
}
@Override
public String moveApplication(ApplicationId appId,
String targetQueueName) throws YarnException {
writeLock.lock();
try {
SchedulerApplication<FiCaSchedulerApp> application =
applications.get(appId);
if (application == null) {
throw new YarnException("App to be moved " + appId + " not found.");
}
if (!(application.getQueue() instanceof CSQueue)) {
throw new YarnException("Source queue is not a Capacity Scheduler queue");
}
CSQueue csQueue = (CSQueue) application.getQueue();
String sourceQueueName = csQueue.getQueuePath();
AbstractLeafQueue source =
this.queueManager.getAndCheckLeafQueue(sourceQueueName);
String destQueueName = handleMoveToPlanQueue(targetQueueName);
AbstractLeafQueue dest = this.queueManager.getAndCheckLeafQueue(destQueueName);
String user = application.getUser();
try {
dest.submitApplication(appId, user, destQueueName);
} catch (AccessControlException e) {
throw new YarnException(e);
}
FiCaSchedulerApp app = application.getCurrentAppAttempt();
if (app != null) {
// Move all live containers even when stopped.
// For transferStateFromPreviousAttempt required
for (RMContainer rmContainer : app.getLiveContainers()) {
source.detachContainer(getClusterResource(), app, rmContainer);
// attach the Container to another queue
dest.attachContainer(getClusterResource(), app, rmContainer);
}
// Move all reserved containers
for (RMContainer rmContainer : app.getReservedContainers()) {
source.detachContainer(getClusterResource(), app, rmContainer);
dest.attachContainer(getClusterResource(), app, rmContainer);
}
if (!app.isStopped()) {
source.finishApplicationAttempt(app, sourceQueueName);
// Submit to a new queue
dest.submitApplicationAttempt(app, user, true);
}
// Finish app & update metrics
app.move(dest);
}
source.appFinished();
// Detach the application..
source.getParent().finishApplication(appId, user);
application.setQueue(dest);
LOG.info("App: " + appId + " successfully moved from " + sourceQueueName
+ " to: " + destQueueName);
return targetQueueName;
} finally {
writeLock.unlock();
}
}
@Override
public void preValidateMoveApplication(ApplicationId appId,
String newQueue) throws YarnException {
writeLock.lock();
try {
SchedulerApplication<FiCaSchedulerApp> application =
applications.get(appId);
if (application == null) {
throw new YarnException("App to be moved " + appId + " not found.");
}
Queue queue = application.getQueue();
String sourceQueueName = queue instanceof CSQueue ?
((CSQueue) queue).getQueuePath() : queue.getQueueName();
this.queueManager.getAndCheckLeafQueue(sourceQueueName);
String destQueueName = handleMoveToPlanQueue(newQueue);
AbstractLeafQueue dest = this.queueManager.getAndCheckLeafQueue(destQueueName);
// Validation check - ACLs, submission limits for user & queue
String user = application.getUser();
// Check active partition only when attempt is available
FiCaSchedulerApp appAttempt =
getApplicationAttempt(ApplicationAttemptId.newInstance(appId, 0));
if (null != appAttempt) {
checkQueuePartition(appAttempt, dest);
}
try {
dest.validateSubmitApplication(appId, user, destQueueName);
} catch (AccessControlException e) {
throw new YarnException(e);
}
} finally {
writeLock.unlock();
}
}
/**
* Check application can be moved to queue with labels enabled. All labels in
* application life time will be checked
*
* @param app
* @param dest
* @throws YarnException
*/
private void checkQueuePartition(FiCaSchedulerApp app, AbstractLeafQueue dest)
throws YarnException {
if (!YarnConfiguration.areNodeLabelsEnabled(conf)) {
return;
}
Set<String> targetqueuelabels = dest.getAccessibleNodeLabels();
AppSchedulingInfo schedulingInfo = app.getAppSchedulingInfo();
Set<String> appLabelexpressions = schedulingInfo.getRequestedPartitions();
// default partition access always available remove empty label
appLabelexpressions.remove(RMNodeLabelsManager.NO_LABEL);
Set<String> nonAccessiblelabels = new HashSet<String>();
for (String label : appLabelexpressions) {
if (!SchedulerUtils.checkQueueLabelExpression(targetqueuelabels, label,
null)) {
nonAccessiblelabels.add(label);
}
}
if (nonAccessiblelabels.size() > 0) {
throw new YarnException(
"Specified queue=" + dest.getQueuePath() + " can't satisfy following "
+ "apps label expressions =" + nonAccessiblelabels
+ " accessible node labels =" + targetqueuelabels);
}
}
/** {@inheritDoc} */
@Override
public EnumSet<SchedulerResourceTypes> getSchedulingResourceTypes() {
if (calculator.getClass().getName()
.equals(DefaultResourceCalculator.class.getName())) {
return EnumSet.of(SchedulerResourceTypes.MEMORY);
}
return EnumSet.of(SchedulerResourceTypes.MEMORY, SchedulerResourceTypes.CPU);
}
@Override
public Resource getMaximumResourceCapability(String queueName) {
if(queueName == null || queueName.isEmpty()) {
return getMaximumResourceCapability();
}
CSQueue queue = getQueue(queueName);
if (queue == null) {
if (isAmbiguous(queueName)) {
LOG.error("Ambiguous queue reference: " + queueName
+ " please use full queue path instead.");
} else {
LOG.error("Unknown queue: " + queueName);
}
return getMaximumResourceCapability();
}
if (!(queue instanceof AbstractLeafQueue)) {
LOG.error("queue " + queueName + " is not an leaf queue");
return getMaximumResourceCapability();
}
// queue.getMaxAllocation returns *configured* maximum allocation.
// getMaximumResourceCapability() returns maximum allocation considers
// per-node maximum resources. So return (component-wise) min of the two.
Resource queueMaxAllocation = queue.getMaximumAllocation();
Resource clusterMaxAllocationConsiderNodeMax =
getMaximumResourceCapability();
return Resources.componentwiseMin(queueMaxAllocation,
clusterMaxAllocationConsiderNodeMax);
}
private String handleMoveToPlanQueue(String targetQueueName) {
CSQueue dest = getQueue(targetQueueName);
if (dest != null && dest instanceof PlanQueue) {
// use the default child reservation queue of the plan
targetQueueName = targetQueueName + ReservationConstants.DEFAULT_QUEUE_SUFFIX;
}
return targetQueueName;
}
@Override
public Set<String> getPlanQueues() {
Set<String> ret = new HashSet<String>();
for (Map.Entry<String, CSQueue> l : queueManager.getQueues().entrySet()) {
if (l.getValue() instanceof PlanQueue) {
ret.add(l.getKey());
}
}
return ret;
}
@Override
public Priority checkAndGetApplicationPriority(
Priority priorityRequestedByApp, UserGroupInformation user,
String queuePath, ApplicationId applicationId) throws YarnException {
readLock.lock();
try {
Priority appPriority = priorityRequestedByApp;
// Verify the scenario where priority is null from submissionContext.
if (null == appPriority) {
// Verify whether submitted user has any default priority set. If so,
// user's default priority will get precedence over queue default.
// for updateApplicationPriority call flow, this check is done in
// CientRMService itself.
appPriority = this.appPriorityACLManager.getDefaultPriority(
normalizeQueueName(queuePath),
user);
// Get the default priority for the Queue. If Queue is non-existent,
// then
// use default priority. Do it only if user doesn't have any default.
if (null == appPriority) {
appPriority = this.queueManager.getDefaultPriorityForQueue(
normalizeQueueName(queuePath));
}
LOG.info(
"Application '" + applicationId + "' is submitted without priority "
+ "hence considering default queue/cluster priority: "
+ appPriority.getPriority());
}
// Verify whether submitted priority is lesser than max priority
// in the cluster. If it is out of found, defining a max cap.
if (appPriority.getPriority() > getMaxClusterLevelAppPriority()
.getPriority()) {
appPriority = Priority
.newInstance(getMaxClusterLevelAppPriority().getPriority());
}
// Lets check for ACLs here.
if (!appPriorityACLManager.checkAccess(user, normalizeQueueName(queuePath), appPriority)) {
throw new YarnException(new AccessControlException(
"User " + user + " does not have permission to submit/update "
+ applicationId + " for " + appPriority));
}
LOG.info("Priority '" + appPriority.getPriority()
+ "' is acceptable in queue : " + queuePath + " for application: "
+ applicationId);
return appPriority;
} finally {
readLock.unlock();
}
}
@Override
public Priority updateApplicationPriority(Priority newPriority,
ApplicationId applicationId, SettableFuture<Object> future,
UserGroupInformation user)
throws YarnException {
writeLock.lock();
try {
Priority appPriority = null;
SchedulerApplication<FiCaSchedulerApp> application = applications
.get(applicationId);
if (application == null) {
throw new YarnException("Application '" + applicationId
+ "' is not present, hence could not change priority.");
}
RMApp rmApp = rmContext.getRMApps().get(applicationId);
appPriority = checkAndGetApplicationPriority(newPriority, user,
rmApp.getQueue(), applicationId);
if (application.getPriority().equals(appPriority)) {
future.set(null);
return appPriority;
}
// Update new priority in Submission Context to update to StateStore.
rmApp.getApplicationSubmissionContext().setPriority(appPriority);
// Update to state store
ApplicationStateData appState = ApplicationStateData.newInstance(
rmApp.getSubmitTime(), rmApp.getStartTime(),
rmApp.getApplicationSubmissionContext(), rmApp.getUser(),
rmApp.getRealUser(), rmApp.getCallerContext());
appState.setApplicationTimeouts(rmApp.getApplicationTimeouts());
appState.setLaunchTime(rmApp.getLaunchTime());
rmContext.getStateStore().updateApplicationStateSynchronously(appState,
false, future);
// As we use iterator over a TreeSet for OrderingPolicy, once we change
// priority then reinsert back to make order correct.
AbstractLeafQueue queue = (AbstractLeafQueue) getQueue(rmApp.getQueue());
queue.updateApplicationPriority(application, appPriority);
LOG.info("Priority '" + appPriority + "' is updated in queue :"
+ rmApp.getQueue() + " for application: " + applicationId
+ " for the user: " + rmApp.getUser());
return appPriority;
} finally {
writeLock.unlock();
}
}
@Override
public PreemptionManager getPreemptionManager() {
return preemptionManager;
}
@Override
public ResourceUsage getClusterResourceUsage() {
return getRootQueue().getQueueResourceUsage();
}
private SchedulerContainer<FiCaSchedulerApp, FiCaSchedulerNode> getSchedulerContainer(
RMContainer rmContainer, boolean allocated) {
if (null == rmContainer) {
return null;
}
FiCaSchedulerApp app = getApplicationAttempt(
rmContainer.getApplicationAttemptId());
if (null == app) { return null; }
NodeId nodeId;
// Get nodeId
if (rmContainer.getState() == RMContainerState.RESERVED) {
nodeId = rmContainer.getReservedNode();
} else {
nodeId = rmContainer.getNodeId();
}
FiCaSchedulerNode node = getNode(nodeId);
if (null == node) {
return null;
}
return new SchedulerContainer<>(app, node, rmContainer,
// TODO, node partition should come from CSAssignment to avoid partition
// get updated before submitting the commit
node.getPartition(), allocated);
}
private List<SchedulerContainer<FiCaSchedulerApp, FiCaSchedulerNode>>
getSchedulerContainersToRelease(
CSAssignment csAssignment) {
List<SchedulerContainer<FiCaSchedulerApp, FiCaSchedulerNode>> list = null;
if (csAssignment.getContainersToKill() != null && !csAssignment
.getContainersToKill().isEmpty()) {
list = new ArrayList<>();
for (RMContainer rmContainer : csAssignment.getContainersToKill()) {
SchedulerContainer schedulerContainer =
getSchedulerContainer(rmContainer, false);
if (schedulerContainer != null) {
list.add(schedulerContainer);
}
}
}
if (csAssignment.getExcessReservation() != null) {
if (null == list) {
list = new ArrayList<>();
}
SchedulerContainer schedulerContainer =
getSchedulerContainer(csAssignment.getExcessReservation(), false);
if (schedulerContainer != null) {
list.add(schedulerContainer);
}
}
if (list != null && list.isEmpty()) {
list = null;
}
return list;
}
@VisibleForTesting
public void submitResourceCommitRequest(Resource cluster,
CSAssignment csAssignment) {
ResourceCommitRequest<FiCaSchedulerApp, FiCaSchedulerNode> request =
createResourceCommitRequest(csAssignment);
if (null == request) {
return;
}
if (asyncSchedulingConf.isScheduleAsynchronously()) {
// Submit to a commit thread and commit it async-ly
asyncSchedulingConf.resourceCommitterService.addNewCommitRequest(request);
} else{
// Otherwise do it sync-ly.
tryCommit(cluster, request, true);
}
}
@Override
public boolean attemptAllocationOnNode(SchedulerApplicationAttempt appAttempt,
SchedulingRequest schedulingRequest, SchedulerNode schedulerNode) {
if (schedulingRequest.getResourceSizing() != null) {
if (schedulingRequest.getResourceSizing().getNumAllocations() > 1) {
LOG.warn("The SchedulingRequest has requested more than 1 allocation," +
" but only 1 will be attempted !!");
}
if (!appAttempt.isStopped()) {
ResourceCommitRequest<FiCaSchedulerApp, FiCaSchedulerNode>
resourceCommitRequest = createResourceCommitRequest(
appAttempt, schedulingRequest, schedulerNode);
// Validate placement constraint is satisfied before
// committing the request.
try {
if (!PlacementConstraintsUtil.canSatisfyConstraints(
appAttempt.getApplicationId(),
schedulingRequest, schedulerNode,
rmContext.getPlacementConstraintManager(),
rmContext.getAllocationTagsManager())) {
LOG.info("Failed to allocate container for application "
+ appAttempt.getApplicationId() + " on node "
+ schedulerNode.getNodeName()
+ " because this allocation violates the"
+ " placement constraint.");
return false;
}
} catch (InvalidAllocationTagsQueryException e) {
LOG.warn("Unable to allocate container", e);
return false;
}
return tryCommit(getClusterResource(), resourceCommitRequest, false);
}
}
return false;
}
// This assumes numContainers = 1 for the request.
private ResourceCommitRequest<FiCaSchedulerApp, FiCaSchedulerNode>
createResourceCommitRequest(SchedulerApplicationAttempt appAttempt,
SchedulingRequest schedulingRequest, SchedulerNode schedulerNode) {
ContainerAllocationProposal<FiCaSchedulerApp, FiCaSchedulerNode> allocated =
null;
Resource resource = schedulingRequest.getResourceSizing().getResources();
if (Resources.greaterThan(calculator, getClusterResource(),
resource, Resources.none())) {
ContainerId cId =
ContainerId.newContainerId(appAttempt.getApplicationAttemptId(),
appAttempt.getAppSchedulingInfo().getNewContainerId());
Container container = BuilderUtils.newContainer(
cId, schedulerNode.getNodeID(), schedulerNode.getHttpAddress(),
resource, schedulingRequest.getPriority(), null,
ExecutionType.GUARANTEED,
schedulingRequest.getAllocationRequestId());
RMContainer rmContainer = new RMContainerImpl(container,
SchedulerRequestKey.extractFrom(container),
appAttempt.getApplicationAttemptId(), container.getNodeId(),
appAttempt.getUser(), rmContext, false);
((RMContainerImpl)rmContainer).setAllocationTags(
new HashSet<>(schedulingRequest.getAllocationTags()));
SchedulerContainer<FiCaSchedulerApp, FiCaSchedulerNode>
schedulerContainer = getSchedulerContainer(rmContainer, true);
if (schedulerContainer == null) {
allocated = null;
} else {
allocated = new ContainerAllocationProposal<>(schedulerContainer,
null, null, NodeType.NODE_LOCAL, NodeType.NODE_LOCAL,
SchedulingMode.RESPECT_PARTITION_EXCLUSIVITY, resource);
}
}
if (null != allocated) {
List<ContainerAllocationProposal<FiCaSchedulerApp, FiCaSchedulerNode>>
allocationsList = new ArrayList<>();
allocationsList.add(allocated);
return new ResourceCommitRequest<>(allocationsList, null, null);
}
return null;
}
@VisibleForTesting
public ResourceCommitRequest<FiCaSchedulerApp, FiCaSchedulerNode>
createResourceCommitRequest(CSAssignment csAssignment) {
ContainerAllocationProposal<FiCaSchedulerApp, FiCaSchedulerNode> allocated =
null;
ContainerAllocationProposal<FiCaSchedulerApp, FiCaSchedulerNode> reserved =
null;
List<SchedulerContainer<FiCaSchedulerApp, FiCaSchedulerNode>> released =
null;
if (Resources.greaterThan(calculator, getClusterResource(),
csAssignment.getResource(), Resources.none())) {
// Allocated something
List<AssignmentInformation.AssignmentDetails> allocations =
csAssignment.getAssignmentInformation().getAllocationDetails();
if (!allocations.isEmpty()) {
RMContainer rmContainer = allocations.get(0).rmContainer;
SchedulerContainer<FiCaSchedulerApp, FiCaSchedulerNode>
schedulerContainer = getSchedulerContainer(rmContainer, true);
if (schedulerContainer == null) {
allocated = null;
// Decrease unconfirmed resource if app is alive
FiCaSchedulerApp app = getApplicationAttempt(
rmContainer.getApplicationAttemptId());
if (app != null) {
app.decUnconfirmedRes(rmContainer.getAllocatedResource());
}
} else {
allocated = new ContainerAllocationProposal<>(schedulerContainer,
getSchedulerContainersToRelease(csAssignment),
getSchedulerContainer(
csAssignment.getFulfilledReservedContainer(), false),
csAssignment.getType(), csAssignment.getRequestLocalityType(),
csAssignment.getSchedulingMode() != null ?
csAssignment.getSchedulingMode() :
SchedulingMode.RESPECT_PARTITION_EXCLUSIVITY,
csAssignment.getResource());
}
}
// Reserved something
List<AssignmentInformation.AssignmentDetails> reservation =
csAssignment.getAssignmentInformation().getReservationDetails();
if (!reservation.isEmpty()) {
RMContainer rmContainer = reservation.get(0).rmContainer;
SchedulerContainer<FiCaSchedulerApp, FiCaSchedulerNode>
schedulerContainer = getSchedulerContainer(rmContainer, false);
if (schedulerContainer == null) {
reserved = null;
} else {
reserved = new ContainerAllocationProposal<>(schedulerContainer,
getSchedulerContainersToRelease(csAssignment),
getSchedulerContainer(
csAssignment.getFulfilledReservedContainer(), false),
csAssignment.getType(), csAssignment.getRequestLocalityType(),
csAssignment.getSchedulingMode() != null ?
csAssignment.getSchedulingMode() :
SchedulingMode.RESPECT_PARTITION_EXCLUSIVITY,
csAssignment.getResource());
}
}
}
// When we don't need to allocate/reserve anything, we can feel free to
// kill all to-release containers in the request.
if (null == allocated && null == reserved) {
released = getSchedulerContainersToRelease(csAssignment);
}
if (null != allocated || null != reserved || (null != released && !released
.isEmpty())) {
List<ContainerAllocationProposal<FiCaSchedulerApp, FiCaSchedulerNode>>
allocationsList = null;
if (allocated != null) {
allocationsList = new ArrayList<>();
allocationsList.add(allocated);
}
List<ContainerAllocationProposal<FiCaSchedulerApp, FiCaSchedulerNode>>
reservationsList = null;
if (reserved != null) {
reservationsList = new ArrayList<>();
reservationsList.add(reserved);
}
return new ResourceCommitRequest<>(allocationsList, reservationsList,
released);
}
return null;
}
@Override
public boolean tryCommit(Resource cluster, ResourceCommitRequest r,
boolean updatePending) {
long commitStart = System.nanoTime();
ResourceCommitRequest<FiCaSchedulerApp, FiCaSchedulerNode> request =
(ResourceCommitRequest<FiCaSchedulerApp, FiCaSchedulerNode>) r;
ApplicationAttemptId attemptId = null;
// We need to update unconfirmed allocated resource of application when
// any container allocated.
boolean updateUnconfirmedAllocatedResource =
request.getContainersToAllocate() != null && !request
.getContainersToAllocate().isEmpty();
// find the application to accept and apply the ResourceCommitRequest
if (request.anythingAllocatedOrReserved()) {
ContainerAllocationProposal<FiCaSchedulerApp, FiCaSchedulerNode> c =
request.getFirstAllocatedOrReservedContainer();
attemptId =
c.getAllocatedOrReservedContainer().getSchedulerApplicationAttempt()
.getApplicationAttemptId();
} else {
if (!request.getContainersToRelease().isEmpty()) {
attemptId = request.getContainersToRelease().get(0)
.getSchedulerApplicationAttempt().getApplicationAttemptId();
}
}
LOG.debug("Try to commit allocation proposal={}", request);
boolean isSuccess = false;
if (attemptId != null) {
FiCaSchedulerApp app = getApplicationAttempt(attemptId);
// Required sanity check for attemptId - when async-scheduling enabled,
// proposal might be outdated if AM failover just finished
// and proposal queue was not be consumed in time
if (app != null && attemptId.equals(app.getApplicationAttemptId())) {
if (app.accept(cluster, request, updatePending)
&& app.apply(cluster, request, updatePending)) {
long commitSuccess = System.nanoTime() - commitStart;
CapacitySchedulerMetrics.getMetrics()
.addCommitSuccess(commitSuccess);
isSuccess = true;
} else{
long commitFailed = System.nanoTime() - commitStart;
CapacitySchedulerMetrics.getMetrics()
.addCommitFailure(commitFailed);
}
LOG.debug("Allocation proposal accepted={}, proposal={}", isSuccess,
request);
// Update unconfirmed allocated resource.
if (updateUnconfirmedAllocatedResource) {
app.decUnconfirmedRes(request.getTotalAllocatedResource());
}
}
}
return isSuccess;
}
public int getAsyncSchedulingPendingBacklogs() {
return asyncSchedulingConf.getPendingBacklogs();
}
@Override
public CapacitySchedulerQueueManager getCapacitySchedulerQueueManager() {
return this.queueManager;
}
public WorkflowPriorityMappingsManager getWorkflowPriorityMappingsManager() {
return this.workflowPriorityMappingsMgr;
}
/**
* Try to move a reserved container to a targetNode.
* If the targetNode is reserved by another application (other than this one).
* The previous reservation will be cancelled.
*
* @param toBeMovedContainer reserved container will be moved
* @param targetNode targetNode
* @return true if move succeeded. Return false if the targetNode is reserved by
* a different container or move failed because of any other reasons.
*/
public boolean moveReservedContainer(RMContainer toBeMovedContainer,
FiCaSchedulerNode targetNode) {
writeLock.lock();
try {
LOG.debug("Trying to move container={} to node={}",
toBeMovedContainer, targetNode.getNodeID());
FiCaSchedulerNode sourceNode = getNode(toBeMovedContainer.getNodeId());
if (null == sourceNode) {
LOG.debug("Failed to move reservation, cannot find source node={}",
toBeMovedContainer.getNodeId());
return false;
}
// Target node updated?
if (getNode(targetNode.getNodeID()) != targetNode) {
LOG.debug("Failed to move reservation, node updated or removed,"
+ " moving cancelled.");
return false;
}
// Target node's reservation status changed?
if (targetNode.getReservedContainer() != null) {
LOG.debug("Target node's reservation status changed,"
+ " moving cancelled.");
return false;
}
FiCaSchedulerApp app = getApplicationAttempt(
toBeMovedContainer.getApplicationAttemptId());
if (null == app) {
LOG.debug("Cannot find to-be-moved container's application={}",
toBeMovedContainer.getApplicationAttemptId());
return false;
}
// finally, move the reserved container
return app.moveReservation(toBeMovedContainer, sourceNode, targetNode);
} finally {
writeLock.unlock();
}
}
@Override
public long checkAndGetApplicationLifetime(String queueName,
long lifetimeRequestedByApp) {
readLock.lock();
try {
CSQueue queue = getQueue(queueName);
if (!(queue instanceof AbstractLeafQueue)) {
return lifetimeRequestedByApp;
}
long defaultApplicationLifetime =
queue.getDefaultApplicationLifetime();
long maximumApplicationLifetime =
queue.getMaximumApplicationLifetime();
// check only for maximum, that's enough because default can't
// exceed maximum
if (maximumApplicationLifetime <= 0) {
return (lifetimeRequestedByApp <= 0) ? defaultApplicationLifetime :
lifetimeRequestedByApp;
}
if (lifetimeRequestedByApp <= 0) {
return defaultApplicationLifetime;
} else if (lifetimeRequestedByApp > maximumApplicationLifetime) {
return maximumApplicationLifetime;
}
return lifetimeRequestedByApp;
} finally {
readLock.unlock();
}
}
@Override
public long getMaximumApplicationLifetime(String queueName) {
CSQueue queue = getQueue(queueName);
if (!(queue instanceof AbstractLeafQueue)) {
if (isAmbiguous(queueName)) {
LOG.error("Ambiguous queue reference: " + queueName
+ " please use full queue path instead.");
} else {
LOG.error("Unknown queue: " + queueName);
}
return -1;
}
// In seconds
return queue.getMaximumApplicationLifetime();
}
@Override
public boolean isConfigurationMutable() {
return csConfProvider instanceof MutableConfigurationProvider;
}
@Override
public MutableConfigurationProvider getMutableConfProvider() {
if (isConfigurationMutable()) {
return (MutableConfigurationProvider) csConfProvider;
}
return null;
}
public CSConfigurationProvider getCsConfProvider() {
return csConfProvider;
}
@Override
public void resetSchedulerMetrics() {
CapacitySchedulerMetrics.destroy();
}
public boolean isMultiNodePlacementEnabled() {
return multiNodePlacementEnabled;
}
public int getNumAsyncSchedulerThreads() {
return asyncSchedulingConf.getNumAsyncSchedulerThreads();
}
@VisibleForTesting
public void setMaxRunningAppsEnforcer(CSMaxRunningAppsEnforcer enforcer) {
this.maxRunningEnforcer = enforcer;
}
/**
* Returning true as capacity scheduler supports placement constraints.
*/
@Override
public boolean placementConstraintEnabled() {
return true;
}
@VisibleForTesting
public void setQueueManager(CapacitySchedulerQueueManager qm) {
this.queueManager = qm;
}
@VisibleForTesting
public List<AsyncScheduleThread> getAsyncSchedulerThreads() {
return asyncSchedulingConf.getAsyncSchedulerThreads();
}
static class AsyncSchedulingConfiguration {
// timeout to join when we stop this service
private static final long THREAD_JOIN_TIMEOUT_MS = 1000;
@VisibleForTesting
protected List<AsyncScheduleThread> asyncSchedulerThreads;
private ResourceCommitterService resourceCommitterService;
private long asyncScheduleInterval;
private static final String ASYNC_SCHEDULER_INTERVAL =
CapacitySchedulerConfiguration.SCHEDULE_ASYNCHRONOUSLY_PREFIX
+ ".scheduling-interval-ms";
private static final long DEFAULT_ASYNC_SCHEDULER_INTERVAL = 5;
private long asyncMaxPendingBacklogs;
private final boolean scheduleAsynchronously;
AsyncSchedulingConfiguration(CapacitySchedulerConfiguration conf,
CapacityScheduler cs) {
this.scheduleAsynchronously = conf.getScheduleAynschronously();
if (this.scheduleAsynchronously) {
this.asyncScheduleInterval = conf.getLong(
CapacitySchedulerConfiguration.SCHEDULE_ASYNCHRONOUSLY_INTERVAL,
CapacitySchedulerConfiguration.DEFAULT_SCHEDULE_ASYNCHRONOUSLY_INTERVAL);
// number of threads for async scheduling
int maxAsyncSchedulingThreads = conf.getInt(
CapacitySchedulerConfiguration.SCHEDULE_ASYNCHRONOUSLY_MAXIMUM_THREAD,
1);
maxAsyncSchedulingThreads = Math.max(maxAsyncSchedulingThreads, 1);
this.asyncMaxPendingBacklogs = conf.getInt(
CapacitySchedulerConfiguration.
SCHEDULE_ASYNCHRONOUSLY_MAXIMUM_PENDING_BACKLOGS,
CapacitySchedulerConfiguration.
DEFAULT_SCHEDULE_ASYNCHRONOUSLY_MAXIMUM_PENDING_BACKLOGS);
this.asyncSchedulerThreads = new ArrayList<>();
for (int i = 0; i < maxAsyncSchedulingThreads; i++) {
asyncSchedulerThreads.add(new AsyncScheduleThread(cs));
}
this.resourceCommitterService = new ResourceCommitterService(cs);
}
}
public boolean isScheduleAsynchronously() {
return scheduleAsynchronously;
}
public long getAsyncScheduleInterval() {
return asyncScheduleInterval;
}
public long getAsyncMaxPendingBacklogs() {
return asyncMaxPendingBacklogs;
}
public void startThreads() {
if (scheduleAsynchronously) {
Preconditions.checkNotNull(asyncSchedulerThreads,
"asyncSchedulerThreads is null");
for (Thread t : asyncSchedulerThreads) {
t.start();
}
resourceCommitterService.start();
}
}
public void serviceStopInvoked() throws InterruptedException {
if (scheduleAsynchronously && asyncSchedulerThreads != null) {
for (Thread t : asyncSchedulerThreads) {
t.interrupt();
t.join(THREAD_JOIN_TIMEOUT_MS);
}
resourceCommitterService.interrupt();
resourceCommitterService.join(THREAD_JOIN_TIMEOUT_MS);
}
}
public void nodeRemoved(int numNodes) {
if (scheduleAsynchronously && numNodes == 0) {
for (AsyncScheduleThread t : asyncSchedulerThreads) {
t.suspendSchedule();
}
}
}
public int getPendingBacklogs() {
if (scheduleAsynchronously) {
return resourceCommitterService.getPendingBacklogs();
}
return 0;
}
public int getNumAsyncSchedulerThreads() {
return asyncSchedulerThreads == null ? 0 : asyncSchedulerThreads.size();
}
@VisibleForTesting
public List<AsyncScheduleThread> getAsyncSchedulerThreads() {
return asyncSchedulerThreads;
}
}
@Override
public PendingApplicationComparator getPendingApplicationComparator(){
return applicationComparator;
}
/**
* Comparator that orders applications by their submit time.
*/
class PendingApplicationComparator
implements Comparator<FiCaSchedulerApp> {
@Override
public int compare(FiCaSchedulerApp app1, FiCaSchedulerApp app2) {
RMApp rmApp1 = rmContext.getRMApps().get(app1.getApplicationId());
RMApp rmApp2 = rmContext.getRMApps().get(app2.getApplicationId());
if (rmApp1 != null && rmApp2 != null) {
return Long.compare(rmApp1.getSubmitTime(), rmApp2.getSubmitTime());
} else if (rmApp1 != null) {
return -1;
} else if (rmApp2 != null) {
return 1;
} else{
return 0;
}
}
}
}
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