hadoop TopCLI 源码
haddop TopCLI 代码
文件路径：/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client/src/main/java/org/apache/hadoop/yarn/client/cli/TopCLI.java
/**
* 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.client.cli;
import java.io.IOException;
import java.io.InputStream;
import java.net.ConnectException;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.EnumMap;
import java.util.EnumSet;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Scanner;
import java.util.Set;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicBoolean;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLSocketFactory;
import org.apache.hadoop.classification.VisibleForTesting;
import org.apache.hadoop.thirdparty.com.google.common.cache.Cache;
import org.apache.hadoop.thirdparty.com.google.common.cache.CacheBuilder;
import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.GnuParser;
import org.apache.commons.cli.HelpFormatter;
import org.apache.commons.cli.Options;
import org.apache.commons.cli.ParseException;
import org.apache.commons.io.IOUtils;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.time.DateFormatUtils;
import org.apache.commons.lang3.time.DurationFormatUtils;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.http.HttpConfig.Policy;
import org.apache.hadoop.security.UserGroupInformation;
import org.apache.hadoop.security.authentication.client.AuthenticatedURL;
import org.apache.hadoop.security.authentication.client.KerberosAuthenticator;
import org.apache.hadoop.security.ssl.SSLFactory;
import org.apache.hadoop.util.Time;
import org.apache.hadoop.util.ToolRunner;
import org.apache.hadoop.yarn.api.protocolrecords.GetApplicationsRequest;
import org.apache.hadoop.yarn.api.records.ApplicationReport;
import org.apache.hadoop.yarn.api.records.Priority;
import org.apache.hadoop.yarn.api.records.QueueInfo;
import org.apache.hadoop.yarn.api.records.QueueStatistics;
import org.apache.hadoop.yarn.api.records.YarnApplicationState;
import org.apache.hadoop.yarn.api.records.YarnClusterMetrics;
import org.apache.hadoop.yarn.conf.HAUtil;
import org.apache.hadoop.yarn.conf.YarnConfiguration;
import org.apache.hadoop.yarn.exceptions.YarnException;
import org.apache.hadoop.yarn.webapp.util.WebAppUtils;
import org.codehaus.jettison.json.JSONException;
import org.codehaus.jettison.json.JSONObject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class TopCLI extends YarnCLI {
private static final String CLUSTER_INFO_URL = "/ws/v1/cluster/info";
private static final Logger LOG = LoggerFactory
.getLogger(TopCLI.class);
private String CLEAR = "\u001b[2J";
private String CLEAR_LINE = "\u001b[2K";
private String SET_CURSOR_HOME = "\u001b[H";
private String CHANGE_BACKGROUND = "\u001b[7m";
private String RESET_BACKGROUND = "\u001b[0m";
private String SET_CURSOR_LINE_7_COLUMN_0 = "\u001b[7;0f";
// guava cache for getapplications call
protected Cache<GetApplicationsRequest, List<ApplicationReport>>
applicationReportsCache = CacheBuilder.newBuilder().maximumSize(1000)
.expireAfterWrite(5, TimeUnit.SECONDS).build();
enum DisplayScreen {
TOP, HELP, SORT, FIELDS
}
enum Columns { // in the order in which they should be displayed
APPID, USER, TYPE, QUEUE, PRIORITY, CONT, RCONT, VCORES, RVCORES, MEM,
RMEM, VCORESECS, MEMSECS, PROGRESS, TIME, NAME
}
static class ColumnInformation {
String header;
String format;
boolean display; // should we show this field or not
String description;
String key; // key to press for sorting/toggling field
public ColumnInformation(String header, String format, boolean display,
String description, String key) {
this.header = header;
this.format = format;
this.display = display;
this.description = description;
this.key = key;
}
}
private static class ApplicationInformation {
final String appid;
final String user;
final String type;
final int priority;
final int usedContainers;
final int reservedContainers;
final long usedMemory;
final long reservedMemory;
final int usedVirtualCores;
final int reservedVirtualCores;
final int attempts;
final float progress;
final String state;
long runningTime;
final String time;
final String name;
final int nodes;
final String queue;
final long memorySeconds;
final long vcoreSeconds;
final EnumMap<Columns, String> displayStringsMap;
ApplicationInformation(ApplicationReport appReport) {
displayStringsMap = new EnumMap<>(Columns.class);
appid = appReport.getApplicationId().toString();
displayStringsMap.put(Columns.APPID, appid);
user = appReport.getUser();
displayStringsMap.put(Columns.USER, user);
type = appReport.getApplicationType().toLowerCase();
displayStringsMap.put(Columns.TYPE, type);
state = appReport.getYarnApplicationState().toString().toLowerCase();
name = appReport.getName();
displayStringsMap.put(Columns.NAME, name);
queue = appReport.getQueue();
displayStringsMap.put(Columns.QUEUE, queue);
Priority appPriority = appReport.getPriority();
priority = null != appPriority ? appPriority.getPriority() : 0;
displayStringsMap.put(Columns.PRIORITY, String.valueOf(priority));
usedContainers =
appReport.getApplicationResourceUsageReport().getNumUsedContainers();
displayStringsMap.put(Columns.CONT, String.valueOf(usedContainers));
reservedContainers =
appReport.getApplicationResourceUsageReport()
.getNumReservedContainers();
displayStringsMap.put(Columns.RCONT, String.valueOf(reservedContainers));
usedVirtualCores =
appReport.getApplicationResourceUsageReport().getUsedResources()
.getVirtualCores();
displayStringsMap.put(Columns.VCORES, String.valueOf(usedVirtualCores));
usedMemory =
appReport.getApplicationResourceUsageReport().getUsedResources()
.getMemorySize() / 1024;
displayStringsMap.put(Columns.MEM, String.valueOf(usedMemory) + "G");
reservedVirtualCores =
appReport.getApplicationResourceUsageReport().getReservedResources()
.getVirtualCores();
displayStringsMap.put(Columns.RVCORES,
String.valueOf(reservedVirtualCores));
reservedMemory =
appReport.getApplicationResourceUsageReport().getReservedResources()
.getMemorySize() / 1024;
displayStringsMap.put(Columns.RMEM, String.valueOf(reservedMemory) + "G");
attempts = appReport.getCurrentApplicationAttemptId().getAttemptId();
nodes = 0;
runningTime = Time.now() - appReport.getStartTime();
time = DurationFormatUtils.formatDuration(runningTime, "dd:HH:mm");
displayStringsMap.put(Columns.TIME, String.valueOf(time));
progress = appReport.getProgress() * 100;
displayStringsMap.put(Columns.PROGRESS, String.format("%.2f", progress));
// store in GBSeconds
memorySeconds =
appReport.getApplicationResourceUsageReport().getMemorySeconds() / 1024;
displayStringsMap.put(Columns.MEMSECS, String.valueOf(memorySeconds));
vcoreSeconds =
appReport.getApplicationResourceUsageReport().getVcoreSeconds();
displayStringsMap.put(Columns.VCORESECS, String.valueOf(vcoreSeconds));
}
}
// all the sort comparators
public static final Comparator<ApplicationInformation> AppIDComparator =
new Comparator<ApplicationInformation>() {
@Override
public int
compare(ApplicationInformation a1, ApplicationInformation a2) {
return a1.appid.compareTo(a2.appid);
}
};
public static final Comparator<ApplicationInformation> UserComparator =
new Comparator<ApplicationInformation>() {
@Override
public int
compare(ApplicationInformation a1, ApplicationInformation a2) {
return a1.user.compareTo(a2.user);
}
};
public static final Comparator<ApplicationInformation> AppTypeComparator =
new Comparator<ApplicationInformation>() {
@Override
public int
compare(ApplicationInformation a1, ApplicationInformation a2) {
return a1.type.compareTo(a2.type);
}
};
public static final Comparator<ApplicationInformation> QueueNameComparator =
new Comparator<ApplicationInformation>() {
@Override
public int
compare(ApplicationInformation a1, ApplicationInformation a2) {
return a1.queue.compareTo(a2.queue);
}
};
public static final Comparator<ApplicationInformation> UsedContainersComparator =
new Comparator<ApplicationInformation>() {
@Override
public int
compare(ApplicationInformation a1, ApplicationInformation a2) {
return a1.usedContainers - a2.usedContainers;
}
};
public static final Comparator<ApplicationInformation> ReservedContainersComparator =
new Comparator<ApplicationInformation>() {
@Override
public int
compare(ApplicationInformation a1, ApplicationInformation a2) {
return a1.reservedContainers - a2.reservedContainers;
}
};
public static final Comparator<ApplicationInformation> UsedMemoryComparator =
new Comparator<ApplicationInformation>() {
@Override
public int
compare(ApplicationInformation a1, ApplicationInformation a2) {
return Long.compare(a1.usedMemory, a2.usedMemory);
}
};
public static final Comparator<ApplicationInformation> ReservedMemoryComparator =
new Comparator<ApplicationInformation>() {
@Override
public int
compare(ApplicationInformation a1, ApplicationInformation a2) {
return Long.compare(a1.reservedMemory, a2.reservedMemory);
}
};
public static final Comparator<ApplicationInformation> UsedVCoresComparator =
new Comparator<ApplicationInformation>() {
@Override
public int
compare(ApplicationInformation a1, ApplicationInformation a2) {
return a1.usedVirtualCores - a2.usedVirtualCores;
}
};
public static final Comparator<ApplicationInformation> ReservedVCoresComparator =
new Comparator<ApplicationInformation>() {
@Override
public int
compare(ApplicationInformation a1, ApplicationInformation a2) {
return a1.reservedVirtualCores - a2.reservedVirtualCores;
}
};
public static final Comparator<ApplicationInformation> VCoreSecondsComparator =
new Comparator<ApplicationInformation>() {
@Override
public int
compare(ApplicationInformation a1, ApplicationInformation a2) {
return Long.compare(a1.vcoreSeconds, a2.vcoreSeconds);
}
};
public static final Comparator<ApplicationInformation> MemorySecondsComparator =
new Comparator<ApplicationInformation>() {
@Override
public int
compare(ApplicationInformation a1, ApplicationInformation a2) {
return Long.compare(a1.memorySeconds, a2.memorySeconds);
}
};
public static final Comparator<ApplicationInformation> ProgressComparator =
new Comparator<ApplicationInformation>() {
@Override
public int
compare(ApplicationInformation a1, ApplicationInformation a2) {
return Float.compare(a1.progress, a2.progress);
}
};
public static final Comparator<ApplicationInformation> RunningTimeComparator =
new Comparator<ApplicationInformation>() {
@Override
public int
compare(ApplicationInformation a1, ApplicationInformation a2) {
return Long.compare(a1.runningTime, a2.runningTime);
}
};
public static final Comparator<ApplicationInformation> AppNameComparator =
new Comparator<ApplicationInformation>() {
@Override
public int
compare(ApplicationInformation a1, ApplicationInformation a2) {
return a1.name.compareTo(a2.name);
}
};
public static final Comparator<ApplicationInformation> AppPriorityComparator =
new Comparator<ApplicationInformation>() {
@Override
public int compare(ApplicationInformation a1,
ApplicationInformation a2) {
return a1.priority - a2.priority;
}
};
private static class NodesInformation {
int totalNodes;
int runningNodes;
int unhealthyNodes;
int decommissionedNodes;
int lostNodes;
int rebootedNodes;
}
private static class QueueMetrics {
long appsSubmitted;
long appsRunning;
long appsPending;
long appsCompleted;
long appsKilled;
long appsFailed;
long activeUsers;
long availableMemoryGB;
long allocatedMemoryGB;
long pendingMemoryGB;
long reservedMemoryGB;
long availableVCores;
long allocatedVCores;
long pendingVCores;
long reservedVCores;
long allocatedContainers;
long reservedContainers;
long pendingContainers;
}
private class KeyboardMonitor extends Thread {
public void run() {
Scanner keyboard = new Scanner(System.in, "UTF-8");
while (runKeyboardMonitor.get()) {
String in = keyboard.next();
try {
if (displayScreen == DisplayScreen.SORT) {
handleSortScreenKeyPress(in);
} else if (displayScreen == DisplayScreen.TOP) {
handleTopScreenKeyPress(in);
} else if (displayScreen == DisplayScreen.FIELDS) {
handleFieldsScreenKeyPress(in);
} else {
handleHelpScreenKeyPress();
}
} catch (Exception e) {
LOG.error("Caught exception", e);
}
}
}
}
long refreshPeriod = 3 * 1000;
int terminalWidth = -1;
int terminalHeight = -1;
String appsHeader;
boolean ascendingSort;
long rmStartTime;
Comparator<ApplicationInformation> comparator;
Options opts;
CommandLine cliParser;
Set<String> queues;
Set<String> users;
Set<String> types;
DisplayScreen displayScreen;
AtomicBoolean showingTopScreen;
AtomicBoolean runMainLoop;
AtomicBoolean runKeyboardMonitor;
final Object lock = new Object();
String currentSortField;
Map<String, Columns> keyFieldsMap;
List<String> sortedKeys;
Thread displayThread;
final EnumMap<Columns, ColumnInformation> columnInformationEnumMap;
public TopCLI() throws IOException, InterruptedException {
super();
queues = new HashSet<>();
users = new HashSet<>();
types = new HashSet<>();
comparator = UsedContainersComparator;
ascendingSort = false;
displayScreen = DisplayScreen.TOP;
showingTopScreen = new AtomicBoolean();
showingTopScreen.set(true);
currentSortField = "c";
keyFieldsMap = new HashMap<>();
runKeyboardMonitor = new AtomicBoolean();
runMainLoop = new AtomicBoolean();
runKeyboardMonitor.set(true);
runMainLoop.set(true);
displayThread = Thread.currentThread();
columnInformationEnumMap = new EnumMap<>(Columns.class);
generateColumnInformationMap();
generateKeyFieldsMap();
sortedKeys = new ArrayList<>(keyFieldsMap.keySet());
Collections.sort(sortedKeys);
setTerminalSequences();
}
public static void main(String[] args) throws Exception {
TopCLI topImp = new TopCLI();
topImp.addShutdownHook();
topImp.setSysOutPrintStream(System.out);
topImp.setSysErrPrintStream(System.err);
int res = ToolRunner.run(topImp, args);
topImp.stop();
System.exit(res);
}
@Override
public int run(String[] args) throws Exception {
try {
parseOptions(args);
if (cliParser.hasOption("help")) {
printUsage();
return 0;
}
} catch (Exception e) {
LOG.error("Unable to parse options", e);
return 1;
}
createAndStartYarnClient();
setAppsHeader();
Thread keyboardMonitor = new KeyboardMonitor();
keyboardMonitor.start();
rmStartTime = getRMStartTime();
clearScreen();
while (runMainLoop.get()) {
if (displayScreen == DisplayScreen.TOP) {
showTopScreen();
try {
Thread.sleep(refreshPeriod);
} catch (InterruptedException ie) {
break;
}
} else if (displayScreen == DisplayScreen.SORT) {
showSortScreen();
Thread.sleep(100);
} else if (displayScreen == DisplayScreen.FIELDS) {
showFieldsScreen();
Thread.sleep(100);
}
if (rmStartTime == -1) {
// we were unable to get it the first time, try again
rmStartTime = getRMStartTime();
}
}
return 0;
}
private void parseOptions(String[] args) throws ParseException, IOException,
InterruptedException {
// Command line options
opts = new Options();
opts.addOption("queues", true,
"Comma separated list of queues to restrict applications");
opts.addOption("users", true,
"Comma separated list of users to restrict applications");
opts.addOption("types", true, "Comma separated list of types to restrict"
+ " applications, case sensitive(though the display is lower case)");
opts.addOption("cols", true, "Number of columns on the terminal");
opts.addOption("rows", true, "Number of rows on the terminal");
opts.addOption("help", false,
"Print usage; for help while the tool is running press 'h' + Enter");
opts.addOption("delay", true,
"The refresh delay(in seconds), default is 3 seconds");
cliParser = new GnuParser().parse(opts, args);
if (cliParser.hasOption("queues")) {
String clqueues = cliParser.getOptionValue("queues");
String[] queuesArray = clqueues.split(",");
queues.addAll(Arrays.asList(queuesArray));
}
if (cliParser.hasOption("users")) {
String clusers = cliParser.getOptionValue("users");
users.addAll(Arrays.asList(clusers.split(",")));
}
if (cliParser.hasOption("types")) {
String cltypes = cliParser.getOptionValue("types");
types.addAll(Arrays.asList(cltypes.split(",")));
}
if (cliParser.hasOption("cols")) {
terminalWidth = Integer.parseInt(cliParser.getOptionValue("cols"));
} else {
setTerminalWidth();
}
if (cliParser.hasOption("rows")) {
terminalHeight = Integer.parseInt(cliParser.getOptionValue("rows"));
} else {
setTerminalHeight();
}
if (cliParser.hasOption("delay")) {
int delay = Integer.parseInt(cliParser.getOptionValue("delay"));
if (delay < 1) {
LOG.warn("Delay set too low, using default");
} else {
refreshPeriod = delay * 1000;
}
}
}
private void printUsage() {
new HelpFormatter().printHelp("yarn top", opts);
System.out.println("");
System.out.println("'yarn top' is a tool to help cluster administrators"
+ " understand cluster usage better.");
System.out.println("Some notes about the implementation:");
System.out.println(" 1. Fetching information for all the apps is an"
+ " expensive call for the RM.");
System.out.println(" To prevent a performance degradation, the results"
+ " are cached for 5 seconds,");
System.out.println(" irrespective of the delay value. Information about"
+ " the NodeManager(s) and queue");
System.out.println(" utilization stats are fetched at the specified"
+ " delay interval. Once we have a");
System.out.println(" better understanding of the performance impact,"
+ " this might change.");
System.out.println(" 2. Since the tool is implemented in Java, you must"
+ " hit Enter for key presses to");
System.out.println(" be processed.");
}
private void setAppsHeader() {
List<String> formattedStrings = new ArrayList<>();
for (EnumMap.Entry<Columns, ColumnInformation> entry :
columnInformationEnumMap.entrySet()) {
if (entry.getValue().display) {
formattedStrings.add(String.format(entry.getValue().format,
entry.getValue().header));
}
}
appsHeader = StringUtils.join(formattedStrings.toArray(), " ");
if (appsHeader.length() > terminalWidth) {
appsHeader =
appsHeader.substring(0, terminalWidth
- System.lineSeparator().length());
} else {
appsHeader +=
StringUtils.repeat(" ", terminalWidth - appsHeader.length()
- System.lineSeparator().length());
}
appsHeader += System.lineSeparator();
}
private void setTerminalWidth() throws IOException, InterruptedException {
if (terminalWidth != -1) {
return;
}
String[] command = { "tput", "cols" };
String op = getCommandOutput(command).trim();
try {
terminalWidth = Integer.parseInt(op);
} catch (NumberFormatException ne) {
LOG.warn("Couldn't determine terminal width, setting to 80", ne);
terminalWidth = 80;
}
}
private void setTerminalHeight() throws IOException, InterruptedException {
if (terminalHeight != -1) {
return;
}
String[] command = { "tput", "lines" };
String op = getCommandOutput(command).trim();
try {
terminalHeight = Integer.parseInt(op);
} catch (NumberFormatException ne) {
LOG.warn("Couldn't determine terminal height, setting to 24", ne);
terminalHeight = 24;
}
}
protected void setTerminalSequences() throws IOException,
InterruptedException {
String[] tput_cursor_home = { "tput", "cup", "0", "0" };
String[] tput_clear = { "tput", "clear" };
String[] tput_clear_line = { "tput", "el" };
String[] tput_set_cursor_line_7_column_0 = { "tput", "cup", "6", "0" };
String[] tput_change_background = { "tput", "smso" };
String[] tput_reset_background = { "tput", "rmso" };
SET_CURSOR_HOME = getCommandOutput(tput_cursor_home);
CLEAR = getCommandOutput(tput_clear);
CLEAR_LINE = getCommandOutput(tput_clear_line);
SET_CURSOR_LINE_7_COLUMN_0 =
getCommandOutput(tput_set_cursor_line_7_column_0);
CHANGE_BACKGROUND = getCommandOutput(tput_change_background);
RESET_BACKGROUND = getCommandOutput(tput_reset_background);
}
private void generateColumnInformationMap() {
columnInformationEnumMap.put(Columns.APPID, new ColumnInformation(
"APPLICATIONID", "%31s", true, "Application Id", "a"));
columnInformationEnumMap.put(Columns.USER, new ColumnInformation("USER",
"%-10s", true, "Username", "u"));
columnInformationEnumMap.put(Columns.TYPE, new ColumnInformation("TYPE",
"%10s", true, "Application type", "t"));
columnInformationEnumMap.put(Columns.QUEUE, new ColumnInformation("QUEUE",
"%10s", true, "Application queue", "q"));
columnInformationEnumMap.put(Columns.PRIORITY, new ColumnInformation(
"PRIOR", "%5s", true, "Application priority", "l"));
columnInformationEnumMap.put(Columns.CONT, new ColumnInformation("#CONT",
"%7s", true, "Number of containers", "c"));
columnInformationEnumMap.put(Columns.RCONT, new ColumnInformation("#RCONT",
"%7s", true, "Number of reserved containers", "r"));
columnInformationEnumMap.put(Columns.VCORES, new ColumnInformation(
"VCORES", "%7s", true, "Allocated vcores", "v"));
columnInformationEnumMap.put(Columns.RVCORES, new ColumnInformation(
"RVCORES", "%7s", true, "Reserved vcores", "o"));
columnInformationEnumMap.put(Columns.MEM, new ColumnInformation("MEM",
"%7s", true, "Allocated memory", "m"));
columnInformationEnumMap.put(Columns.RMEM, new ColumnInformation("RMEM",
"%7s", true, "Reserved memory", "w"));
columnInformationEnumMap.put(Columns.VCORESECS, new ColumnInformation(
"VCORESECS", "%10s", true, "Vcore seconds", "s"));
columnInformationEnumMap.put(Columns.MEMSECS, new ColumnInformation(
"MEMSECS", "%10s", true, "Memory seconds(in GBseconds)", "y"));
columnInformationEnumMap.put(Columns.PROGRESS, new ColumnInformation(
"%PROGR", "%6s", true, "Progress(percentage)", "p"));
columnInformationEnumMap.put(Columns.TIME, new ColumnInformation("TIME",
"%10s", true, "Running time", "i"));
columnInformationEnumMap.put(Columns.NAME, new ColumnInformation("NAME",
"%s", true, "Application name", "n"));
}
private void generateKeyFieldsMap() {
for (EnumMap.Entry<Columns, ColumnInformation> entry :
columnInformationEnumMap.entrySet()) {
keyFieldsMap.put(entry.getValue().key, entry.getKey());
}
}
protected NodesInformation getNodesInfo() {
NodesInformation nodeInfo = new NodesInformation();
YarnClusterMetrics yarnClusterMetrics;
try {
yarnClusterMetrics = client.getYarnClusterMetrics();
} catch (IOException ie) {
LOG.error("Unable to fetch cluster metrics", ie);
return nodeInfo;
} catch (YarnException ye) {
LOG.error("Unable to fetch cluster metrics", ye);
return nodeInfo;
}
nodeInfo.decommissionedNodes =
yarnClusterMetrics.getNumDecommissionedNodeManagers();
nodeInfo.totalNodes = yarnClusterMetrics.getNumNodeManagers();
nodeInfo.runningNodes = yarnClusterMetrics.getNumActiveNodeManagers();
nodeInfo.lostNodes = yarnClusterMetrics.getNumLostNodeManagers();
nodeInfo.unhealthyNodes = yarnClusterMetrics.getNumUnhealthyNodeManagers();
nodeInfo.rebootedNodes = yarnClusterMetrics.getNumRebootedNodeManagers();
return nodeInfo;
}
protected QueueMetrics getQueueMetrics() {
QueueMetrics queueMetrics = new QueueMetrics();
List<QueueInfo> queuesInfo;
if (queues.isEmpty()) {
try {
queuesInfo = client.getRootQueueInfos();
} catch (Exception ie) {
LOG.error("Unable to get queue information", ie);
return queueMetrics;
}
} else {
queuesInfo = new ArrayList<>();
for (String queueName : queues) {
try {
QueueInfo qInfo = client.getQueueInfo(queueName);
queuesInfo.add(qInfo);
} catch (Exception ie) {
LOG.error("Unable to get queue information", ie);
return queueMetrics;
}
}
}
for (QueueInfo childInfo : queuesInfo) {
QueueStatistics stats = childInfo.getQueueStatistics();
if (stats != null) {
queueMetrics.appsSubmitted += stats.getNumAppsSubmitted();
queueMetrics.appsRunning += stats.getNumAppsRunning();
queueMetrics.appsPending += stats.getNumAppsPending();
queueMetrics.appsCompleted += stats.getNumAppsCompleted();
queueMetrics.appsKilled += stats.getNumAppsKilled();
queueMetrics.appsFailed += stats.getNumAppsFailed();
queueMetrics.activeUsers += stats.getNumActiveUsers();
queueMetrics.availableMemoryGB += stats.getAvailableMemoryMB();
queueMetrics.allocatedMemoryGB += stats.getAllocatedMemoryMB();
queueMetrics.pendingMemoryGB += stats.getPendingMemoryMB();
queueMetrics.reservedMemoryGB += stats.getReservedMemoryMB();
queueMetrics.availableVCores += stats.getAvailableVCores();
queueMetrics.allocatedVCores += stats.getAllocatedVCores();
queueMetrics.pendingVCores += stats.getPendingVCores();
queueMetrics.reservedVCores += stats.getReservedVCores();
queueMetrics.allocatedContainers += stats.getAllocatedContainers();
queueMetrics.pendingContainers += stats.getPendingContainers();
queueMetrics.reservedContainers += stats.getReservedContainers();
}
}
queueMetrics.availableMemoryGB = queueMetrics.availableMemoryGB / 1024;
queueMetrics.allocatedMemoryGB = queueMetrics.allocatedMemoryGB / 1024;
queueMetrics.pendingMemoryGB = queueMetrics.pendingMemoryGB / 1024;
queueMetrics.reservedMemoryGB = queueMetrics.reservedMemoryGB / 1024;
return queueMetrics;
}
long getRMStartTime() {
try {
// connect with url
URL url = getClusterUrl();
if (null == url) {
return -1;
}
JSONObject clusterInfo = getJSONObject(connect(url));
return clusterInfo.getLong("startedOn");
} catch (Exception e) {
LOG.error("Could not fetch RM start time", e);
}
return -1;
}
private JSONObject getJSONObject(URLConnection conn)
throws IOException, JSONException {
try(InputStream in = conn.getInputStream()) {
String encoding = conn.getContentEncoding();
encoding = encoding == null ? "UTF-8" : encoding;
String body = IOUtils.toString(in, encoding);
JSONObject obj = new JSONObject(body);
JSONObject clusterInfo = obj.getJSONObject("clusterInfo");
return clusterInfo;
}
}
private URL getClusterUrl() throws Exception {
URL url = null;
Configuration conf = getConf();
if (HAUtil.isHAEnabled(conf)) {
Collection<String> haids = HAUtil.getRMHAIds(conf);
for (String rmhid : haids) {
try {
url = getHAClusterUrl(conf, rmhid);
if (isActive(url)) {
break;
}
} catch (ConnectException e) {
// ignore and try second one when one of RM is down
}
}
} else {
url = new URL(
WebAppUtils.getRMWebAppURLWithScheme(conf) + CLUSTER_INFO_URL);
}
return url;
}
private boolean isActive(URL url) throws Exception {
URLConnection connect = connect(url);
JSONObject clusterInfo = getJSONObject(connect);
return clusterInfo.getString("haState").equals("ACTIVE");
}
@VisibleForTesting
public URL getHAClusterUrl(Configuration conf, String rmhid)
throws MalformedURLException {
return new URL(WebAppUtils.getHttpSchemePrefix(conf)
+ WebAppUtils.getResolvedRemoteRMWebAppURLWithoutScheme(conf,
YarnConfiguration.useHttps(conf) ? Policy.HTTPS_ONLY
: Policy.HTTP_ONLY,
rmhid)
+ CLUSTER_INFO_URL);
}
private URLConnection connect(URL url) throws Exception {
AuthenticatedURL.Token token = new AuthenticatedURL.Token();
AuthenticatedURL authUrl;
SSLFactory clientSslFactory;
URLConnection connection;
// If https is chosen, configures SSL client.
if (YarnConfiguration.useHttps(getConf())) {
clientSslFactory = new SSLFactory(SSLFactory.Mode.CLIENT, getConf());
clientSslFactory.init();
SSLSocketFactory sslSocktFact = clientSslFactory.createSSLSocketFactory();
authUrl =
new AuthenticatedURL(new KerberosAuthenticator(), clientSslFactory);
connection = authUrl.openConnection(url, token);
HttpsURLConnection httpsConn = (HttpsURLConnection) connection;
httpsConn.setSSLSocketFactory(sslSocktFact);
} else {
authUrl = new AuthenticatedURL(new KerberosAuthenticator());
connection = authUrl.openConnection(url, token);
}
connection.connect();
return connection;
}
String getHeader(QueueMetrics queueMetrics, NodesInformation nodes) {
StringBuilder ret = new StringBuilder();
String queue = "root";
if (!queues.isEmpty()) {
queue = StringUtils.join(queues, ",");
}
long now = Time.now();
long uptime = 0L;
if (rmStartTime != -1) {
uptime = now - rmStartTime;
}
long days = TimeUnit.MILLISECONDS.toDays(uptime);
long hours =
TimeUnit.MILLISECONDS.toHours(uptime)
- TimeUnit.DAYS.toHours(TimeUnit.MILLISECONDS.toDays(uptime));
long minutes =
TimeUnit.MILLISECONDS.toMinutes(uptime)
- TimeUnit.HOURS.toMinutes(TimeUnit.MILLISECONDS.toHours(uptime));
String uptimeStr = String.format("%dd, %d:%d", days, hours, minutes);
String currentTime = DateFormatUtils.ISO_8601_EXTENDED_TIME_FORMAT
.format(now);
ret.append(CLEAR_LINE)
.append(limitLineLength(String.format(
"YARN top - %s, up %s, %d active users, queue(s): %s%n",
currentTime, uptimeStr, queueMetrics.activeUsers, queue),
terminalWidth, true));
ret.append(CLEAR_LINE)
.append(limitLineLength(String.format(
"NodeManager(s)"
+ ": %d total, %d active, %d unhealthy, %d decommissioned,"
+ " %d lost, %d rebooted%n",
nodes.totalNodes, nodes.runningNodes, nodes.unhealthyNodes,
nodes.decommissionedNodes, nodes.lostNodes,
nodes.rebootedNodes), terminalWidth, true));
ret.append(CLEAR_LINE)
.append(limitLineLength(String.format(
"Queue(s) Applications: %d running, %d submitted, %d pending,"
+ " %d completed, %d killed, %d failed%n",
queueMetrics.appsRunning, queueMetrics.appsSubmitted,
queueMetrics.appsPending, queueMetrics.appsCompleted,
queueMetrics.appsKilled, queueMetrics.appsFailed), terminalWidth,
true));
ret.append(CLEAR_LINE)
.append(limitLineLength(String.format("Queue(s) Mem(GB): %d available,"
+ " %d allocated, %d pending, %d reserved%n",
queueMetrics.availableMemoryGB, queueMetrics.allocatedMemoryGB,
queueMetrics.pendingMemoryGB, queueMetrics.reservedMemoryGB),
terminalWidth, true));
ret.append(CLEAR_LINE)
.append(limitLineLength(String.format("Queue(s) VCores: %d available,"
+ " %d allocated, %d pending, %d reserved%n",
queueMetrics.availableVCores, queueMetrics.allocatedVCores,
queueMetrics.pendingVCores, queueMetrics.reservedVCores),
terminalWidth, true));
ret.append(CLEAR_LINE)
.append(limitLineLength(String.format(
"Queue(s) Containers: %d allocated, %d pending, %d reserved%n",
queueMetrics.allocatedContainers, queueMetrics.pendingContainers,
queueMetrics.reservedContainers), terminalWidth, true));
return ret.toString();
}
String getPrintableAppInformation(List<ApplicationInformation> appsInfo) {
StringBuilder ret = new StringBuilder();
int limit = terminalHeight - 9;
List<String> columns = new ArrayList<>();
for (int i = 0; i < limit; ++i) {
ret.append(CLEAR_LINE);
if(i < appsInfo.size()) {
ApplicationInformation appInfo = appsInfo.get(i);
columns.clear();
for (EnumMap.Entry<Columns, ColumnInformation> entry :
columnInformationEnumMap.entrySet()) {
if (entry.getValue().display) {
String value = "";
if (appInfo.displayStringsMap.containsKey(entry.getKey())) {
value = appInfo.displayStringsMap.get(entry.getKey());
}
columns.add(String.format(entry.getValue().format, value));
}
}
ret.append(limitLineLength(
(StringUtils.join(columns.toArray(), " ") + System.lineSeparator()),
terminalWidth, true));
}
else {
ret.append(System.lineSeparator());
}
}
return ret.toString();
}
protected void clearScreen() {
System.out.print(CLEAR);
System.out.flush();
}
protected void clearScreenWithoutScroll() {
System.out.print(SET_CURSOR_HOME);
for(int i = 0; i < terminalHeight; ++i) {
System.out.println(CLEAR_LINE);
}
}
protected void printHeader(String header) {
System.out.print(SET_CURSOR_HOME);
System.out.print(header);
System.out.println("");
}
protected void printApps(String appInfo) {
System.out.print(CLEAR_LINE);
System.out.print(CHANGE_BACKGROUND + appsHeader + RESET_BACKGROUND);
System.out.print(appInfo);
}
private void showHelpScreen() {
synchronized (lock) {
if (!showingTopScreen.get()) {
// we've already printed the help screen
return;
}
showingTopScreen.set(false);
clearScreenWithoutScroll();
System.out.print(SET_CURSOR_HOME);
System.out.println("Help for yarn top.");
System.out.println("Delay: " + (refreshPeriod / 1000)
+ " secs; Secure mode: " + UserGroupInformation.isSecurityEnabled());
System.out.println("");
System.out.println(" s + Enter: Select sort field");
System.out.println(" f + Enter: Select fields to display");
System.out.println(" R + Enter: Reverse current sort order");
System.out.println(" h + Enter: Display this screen");
System.out.println(" q + Enter: Quit");
System.out.println("");
System.out.println("Press any key followed by Enter to continue");
}
}
private void showSortScreen() {
synchronized (lock) {
showingTopScreen.set(false);
System.out.print(SET_CURSOR_HOME);
System.out.println(CLEAR_LINE + "Current Sort Field: " + currentSortField);
System.out.println(CLEAR_LINE + "Select sort field via letter followed by"
+ " Enter, type any other key followed by Enter to return");
System.out.println(CLEAR_LINE);
for (String key : sortedKeys) {
String prefix = " ";
if (key.equals(currentSortField)) {
prefix = "*";
}
ColumnInformation value =
columnInformationEnumMap.get(keyFieldsMap.get(key));
System.out.print(CLEAR_LINE);
System.out.println(String.format("%s %s: %-15s = %s", prefix, key,
value.header, value.description));
}
}
}
protected void showFieldsScreen() {
synchronized (lock) {
showingTopScreen.set(false);
System.out.print(SET_CURSOR_HOME);
System.out.println(CLEAR_LINE + "Current Fields: ");
System.out.println(CLEAR_LINE + "Toggle fields via field letter followed"
+ " by Enter, type any other key followed by Enter to return");
for (String key : sortedKeys) {
ColumnInformation info =
columnInformationEnumMap.get(keyFieldsMap.get(key));
String prefix = " ";
String letter = key;
if (info.display) {
prefix = "*";
letter = key.toUpperCase();
}
System.out.print(CLEAR_LINE);
System.out.println(String.format("%s %s: %-15s = %s", prefix, letter,
info.header, info.description));
}
}
}
protected void showTopScreen() {
List<ApplicationInformation> appsInfo = new ArrayList<>();
List<ApplicationReport> apps;
try {
apps = fetchAppReports();
} catch (Exception e) {
LOG.error("Unable to get application information", e);
return;
}
for (ApplicationReport appReport : apps) {
ApplicationInformation appInfo = new ApplicationInformation(appReport);
appsInfo.add(appInfo);
}
if (ascendingSort) {
Collections.sort(appsInfo, comparator);
} else {
Collections.sort(appsInfo, Collections.reverseOrder(comparator));
}
NodesInformation nodesInfo = getNodesInfo();
QueueMetrics queueMetrics = getQueueMetrics();
String header = getHeader(queueMetrics, nodesInfo);
String appsStr = getPrintableAppInformation(appsInfo);
synchronized (lock) {
printHeader(header);
printApps(appsStr);
System.out.print(SET_CURSOR_LINE_7_COLUMN_0);
System.out.print(CLEAR_LINE);
}
}
private void handleSortScreenKeyPress(String input) {
String f = currentSortField;
currentSortField = input.toLowerCase();
switch (input.toLowerCase()) {
case "a":
comparator = AppIDComparator;
break;
case "u":
comparator = UserComparator;
break;
case "t":
comparator = AppTypeComparator;
break;
case "q":
comparator = QueueNameComparator;
break;
case "c":
comparator = UsedContainersComparator;
break;
case "r":
comparator = ReservedContainersComparator;
break;
case "v":
comparator = UsedVCoresComparator;
break;
case "o":
comparator = ReservedVCoresComparator;
break;
case "m":
comparator = UsedMemoryComparator;
break;
case "w":
comparator = ReservedMemoryComparator;
break;
case "s":
comparator = VCoreSecondsComparator;
break;
case "y":
comparator = MemorySecondsComparator;
break;
case "p":
comparator = ProgressComparator;
break;
case "i":
comparator = RunningTimeComparator;
break;
case "n":
comparator = AppNameComparator;
break;
case "l":
comparator = AppPriorityComparator;
break;
default:
// it wasn't a sort key
currentSortField = f;
showTopScreen();
showingTopScreen.set(true);
displayScreen = DisplayScreen.TOP;
}
}
private void handleFieldsScreenKeyPress(String input) {
if (keyFieldsMap.containsKey(input.toLowerCase())) {
toggleColumn(keyFieldsMap.get(input.toLowerCase()));
setAppsHeader();
} else {
showTopScreen();
showingTopScreen.set(true);
displayScreen = DisplayScreen.TOP;
}
}
private void handleTopScreenKeyPress(String input) {
switch (input.toLowerCase()) {
case "q":
runMainLoop.set(false);
runKeyboardMonitor.set(false);
// wake up if it's sleeping
displayThread.interrupt();
break;
case "s":
displayScreen = DisplayScreen.SORT;
showSortScreen();
break;
case "f":
displayScreen = DisplayScreen.FIELDS;
showFieldsScreen();
break;
case "r":
ascendingSort = !ascendingSort;
break;
case "h":
displayScreen = DisplayScreen.HELP;
showHelpScreen();
break;
default:
break;
}
}
private void handleHelpScreenKeyPress() {
showTopScreen();
showingTopScreen.set(true);
displayScreen = DisplayScreen.TOP;
}
String limitLineLength(String line, int length, boolean addNewline) {
if (line.length() > length) {
String tmp;
if (addNewline) {
tmp = line.substring(0, length - System.lineSeparator().length());
tmp += System.lineSeparator();
} else {
tmp = line.substring(0, length);
}
return tmp;
}
return line;
}
void toggleColumn(Columns col) {
columnInformationEnumMap.get(col).display =
!columnInformationEnumMap.get(col).display;
}
protected List<ApplicationReport> fetchAppReports() throws YarnException,
IOException {
List<ApplicationReport> ret;
EnumSet<YarnApplicationState> states =
EnumSet.of(YarnApplicationState.ACCEPTED, YarnApplicationState.RUNNING);
GetApplicationsRequest req =
GetApplicationsRequest.newInstance(types, states);
req.setQueues(queues);
req.setUsers(users);
ret = applicationReportsCache.getIfPresent(req);
if (ret != null) {
return ret;
}
ret = client.getApplications(queues, users, types, states);
applicationReportsCache.put(req, ret);
return ret;
}
private String getCommandOutput(String[] command) throws IOException,
InterruptedException {
Process p = Runtime.getRuntime().exec(command);
p.waitFor();
byte[] output = IOUtils.toByteArray(p.getInputStream());
return new String(output, "ASCII");
}
private void addShutdownHook() {
//clear screen when the program exits
Runtime.getRuntime().addShutdownHook(new Thread(() -> {
clearScreen();
}));
}
}
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