hadoop CommonConfigurationKeys 源码
haddop CommonConfigurationKeys 代码
文件路径：/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/CommonConfigurationKeys.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.fs;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.http.lib.StaticUserWebFilter;
import org.apache.hadoop.net.DomainNameResolver;
import org.apache.hadoop.net.DNSDomainNameResolver;
/**
* This class contains constants for configuration keys used
* in the common code.
*
* It inherits all the publicly documented configuration keys
* and adds unsupported keys.
*
*/
@InterfaceAudience.Private
@InterfaceStability.Unstable
public class CommonConfigurationKeys extends CommonConfigurationKeysPublic {
/** Default location for user home directories */
public static final String FS_HOME_DIR_KEY = "fs.homeDir";
/** Default value for FS_HOME_DIR_KEY */
public static final String FS_HOME_DIR_DEFAULT = "/user";
/** Default umask for files created in HDFS */
public static final String FS_PERMISSIONS_UMASK_KEY =
"fs.permissions.umask-mode";
/** Default value for FS_PERMISSIONS_UMASK_KEY */
public static final int FS_PERMISSIONS_UMASK_DEFAULT = 0022;
/** How often does RPC client send pings to RPC server */
public static final String IPC_PING_INTERVAL_KEY = "ipc.ping.interval";
/** Default value for IPC_PING_INTERVAL_KEY */
public static final int IPC_PING_INTERVAL_DEFAULT = 60000; // 1 min
/** Enables pings from RPC client to the server */
public static final String IPC_CLIENT_PING_KEY = "ipc.client.ping";
/** Default value of IPC_CLIENT_PING_KEY */
public static final boolean IPC_CLIENT_PING_DEFAULT = true;
/** Timeout value for RPC client on waiting for response. */
public static final String IPC_CLIENT_RPC_TIMEOUT_KEY =
"ipc.client.rpc-timeout.ms";
/** Default value for IPC_CLIENT_RPC_TIMEOUT_KEY. */
public static final int IPC_CLIENT_RPC_TIMEOUT_DEFAULT = 120000;
/** Responses larger than this will be logged */
public static final String IPC_SERVER_RPC_MAX_RESPONSE_SIZE_KEY =
"ipc.server.max.response.size";
/** Default value for IPC_SERVER_RPC_MAX_RESPONSE_SIZE_KEY */
public static final int IPC_SERVER_RPC_MAX_RESPONSE_SIZE_DEFAULT =
1024*1024;
/** Number of threads in RPC server reading from the socket */
public static final String IPC_SERVER_RPC_READ_THREADS_KEY =
"ipc.server.read.threadpool.size";
/** Default value for IPC_SERVER_RPC_READ_THREADS_KEY */
public static final int IPC_SERVER_RPC_READ_THREADS_DEFAULT = 1;
/** Number of pending connections that may be queued per socket reader */
public static final String IPC_SERVER_RPC_READ_CONNECTION_QUEUE_SIZE_KEY =
"ipc.server.read.connection-queue.size";
/** Default value for IPC_SERVER_RPC_READ_CONNECTION_QUEUE_SIZE */
public static final int IPC_SERVER_RPC_READ_CONNECTION_QUEUE_SIZE_DEFAULT =
100;
/** Max request size a server will accept. */
public static final String IPC_MAXIMUM_DATA_LENGTH =
"ipc.maximum.data.length";
/** Default value for IPC_MAXIMUM_DATA_LENGTH. */
public static final int IPC_MAXIMUM_DATA_LENGTH_DEFAULT = 128 * 1024 * 1024;
/** Max response size a client will accept. */
public static final String IPC_MAXIMUM_RESPONSE_LENGTH =
"ipc.maximum.response.length";
/** Default value for IPC_MAXIMUM_RESPONSE_LENGTH. */
public static final int IPC_MAXIMUM_RESPONSE_LENGTH_DEFAULT =
128 * 1024 * 1024;
/** How many calls per handler are allowed in the queue. */
public static final String IPC_SERVER_HANDLER_QUEUE_SIZE_KEY =
"ipc.server.handler.queue.size";
/** Default value for IPC_SERVER_HANDLER_QUEUE_SIZE_KEY */
public static final int IPC_SERVER_HANDLER_QUEUE_SIZE_DEFAULT = 100;
/**
* CallQueue related settings. These are not used directly, but rather
* combined with a namespace and port. For instance:
* IPC_NAMESPACE + ".8020." + IPC_CALLQUEUE_IMPL_KEY
*/
public static final String IPC_NAMESPACE = "ipc";
public static final String IPC_CALLQUEUE_IMPL_KEY = "callqueue.impl";
public static final String IPC_SCHEDULER_IMPL_KEY = "scheduler.impl";
public static final String IPC_IDENTITY_PROVIDER_KEY = "identity-provider.impl";
public static final String IPC_COST_PROVIDER_KEY = "cost-provider.impl";
public static final String IPC_BACKOFF_ENABLE = "backoff.enable";
public static final boolean IPC_BACKOFF_ENABLE_DEFAULT = false;
// Callqueue overflow trigger failover for stateless servers.
public static final String IPC_CALLQUEUE_SERVER_FAILOVER_ENABLE =
"callqueue.overflow.trigger.failover";
public static final boolean IPC_CALLQUEUE_SERVER_FAILOVER_ENABLE_DEFAULT =
false;
/** Callqueue subqueue capacity weights. */
public static final String IPC_CALLQUEUE_CAPACITY_WEIGHTS_KEY =
"callqueue.capacity.weights";
/**
* IPC scheduler priority levels.
*/
public static final String IPC_SCHEDULER_PRIORITY_LEVELS_KEY =
"scheduler.priority.levels";
public static final int IPC_SCHEDULER_PRIORITY_LEVELS_DEFAULT_KEY = 4;
/** This is for specifying the implementation for the mappings from
* hostnames to the racks they belong to
*/
public static final String NET_TOPOLOGY_CONFIGURED_NODE_MAPPING_KEY =
"net.topology.configured.node.mapping";
/**
* Supported compression codec classes
*/
public static final String IO_COMPRESSION_CODECS_KEY = "io.compression.codecs";
/** Internal buffer size for Lzo compressor/decompressors */
public static final String IO_COMPRESSION_CODEC_LZO_BUFFERSIZE_KEY =
"io.compression.codec.lzo.buffersize";
/** Default value for IO_COMPRESSION_CODEC_LZO_BUFFERSIZE_KEY */
public static final int IO_COMPRESSION_CODEC_LZO_BUFFERSIZE_DEFAULT =
64*1024;
/** Internal buffer size for Snappy compressor/decompressors */
public static final String IO_COMPRESSION_CODEC_SNAPPY_BUFFERSIZE_KEY =
"io.compression.codec.snappy.buffersize";
/** Default value for IO_COMPRESSION_CODEC_SNAPPY_BUFFERSIZE_KEY */
public static final int IO_COMPRESSION_CODEC_SNAPPY_BUFFERSIZE_DEFAULT =
256 * 1024;
/** ZStandard compression level. */
public static final String IO_COMPRESSION_CODEC_ZSTD_LEVEL_KEY =
"io.compression.codec.zstd.level";
/** Default value for IO_COMPRESSION_CODEC_ZSTD_LEVEL_KEY. */
public static final int IO_COMPRESSION_CODEC_ZSTD_LEVEL_DEFAULT = 3;
/** ZStandard buffer size. */
public static final String IO_COMPRESSION_CODEC_ZSTD_BUFFER_SIZE_KEY =
"io.compression.codec.zstd.buffersize";
/** ZStandard buffer size a value of 0 means use the recommended zstd
* buffer size that the library recommends. */
public static final int
IO_COMPRESSION_CODEC_ZSTD_BUFFER_SIZE_DEFAULT = 0;
/** Internal buffer size for Lz4 compressor/decompressors */
public static final String IO_COMPRESSION_CODEC_LZ4_BUFFERSIZE_KEY =
"io.compression.codec.lz4.buffersize";
/** Default value for IO_COMPRESSION_CODEC_SNAPPY_BUFFERSIZE_KEY */
public static final int IO_COMPRESSION_CODEC_LZ4_BUFFERSIZE_DEFAULT =
256 * 1024;
/** Use lz4hc(slow but with high compression ratio) for lz4 compression */
public static final String IO_COMPRESSION_CODEC_LZ4_USELZ4HC_KEY =
"io.compression.codec.lz4.use.lz4hc";
/** Default value for IO_COMPRESSION_CODEC_USELZ4HC_KEY */
public static final boolean IO_COMPRESSION_CODEC_LZ4_USELZ4HC_DEFAULT =
false;
/**
* Service Authorization
*/
public static final String
HADOOP_SECURITY_SERVICE_AUTHORIZATION_DEFAULT_ACL =
"security.service.authorization.default.acl";
public static final String
HADOOP_SECURITY_SERVICE_AUTHORIZATION_DEFAULT_BLOCKED_ACL =
"security.service.authorization.default.acl.blocked";
public static final String
HADOOP_SECURITY_SERVICE_AUTHORIZATION_REFRESH_POLICY =
"security.refresh.policy.protocol.acl";
public static final String
HADOOP_SECURITY_SERVICE_AUTHORIZATION_GET_USER_MAPPINGS =
"security.get.user.mappings.protocol.acl";
public static final String
HADOOP_SECURITY_SERVICE_AUTHORIZATION_REFRESH_USER_MAPPINGS =
"security.refresh.user.mappings.protocol.acl";
public static final String
HADOOP_SECURITY_SERVICE_AUTHORIZATION_REFRESH_CALLQUEUE =
"security.refresh.callqueue.protocol.acl";
public static final String
HADOOP_SECURITY_SERVICE_AUTHORIZATION_GENERIC_REFRESH =
"security.refresh.generic.protocol.acl";
public static final String
HADOOP_SECURITY_SERVICE_AUTHORIZATION_TRACING =
"security.trace.protocol.acl";
public static final String
HADOOP_SECURITY_SERVICE_AUTHORIZATION_DATANODE_LIFELINE =
"security.datanode.lifeline.protocol.acl";
public static final String
HADOOP_SECURITY_SERVICE_AUTHORIZATION_RECONFIGURATION =
"security.reconfiguration.protocol.acl";
public static final String
SECURITY_HA_SERVICE_PROTOCOL_ACL = "security.ha.service.protocol.acl";
public static final String
SECURITY_ZKFC_PROTOCOL_ACL = "security.zkfc.protocol.acl";
public static final String
SECURITY_CLIENT_PROTOCOL_ACL = "security.client.protocol.acl";
public static final String SECURITY_CLIENT_DATANODE_PROTOCOL_ACL =
"security.client.datanode.protocol.acl";
public static final String SECURITY_ROUTER_ADMIN_PROTOCOL_ACL =
"security.router.admin.protocol.acl";
public static final String
SECURITY_DATANODE_PROTOCOL_ACL = "security.datanode.protocol.acl";
public static final String
SECURITY_INTER_DATANODE_PROTOCOL_ACL = "security.inter.datanode.protocol.acl";
public static final String
SECURITY_NAMENODE_PROTOCOL_ACL = "security.namenode.protocol.acl";
public static final String SECURITY_QJOURNAL_SERVICE_PROTOCOL_ACL =
"security.qjournal.service.protocol.acl";
public static final String SECURITY_INTERQJOURNAL_SERVICE_PROTOCOL_ACL =
"security.interqjournal.service.protocol.acl";
public static final String HADOOP_SECURITY_TOKEN_SERVICE_USE_IP =
"hadoop.security.token.service.use_ip";
public static final boolean HADOOP_SECURITY_TOKEN_SERVICE_USE_IP_DEFAULT =
true;
/**
* @see
* <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
* core-default.xml</a>
*/
public static final String HADOOP_SECURITY_DNS_LOG_SLOW_LOOKUPS_ENABLED_KEY =
"hadoop.security.dns.log-slow-lookups.enabled";
public static final boolean
HADOOP_SECURITY_DNS_LOG_SLOW_LOOKUPS_ENABLED_DEFAULT = false;
/**
* @see
* <a href="{@docRoot}/../hadoop-project-dist/hadoop-common/core-default.xml">
* core-default.xml</a>
*/
public static final String
HADOOP_SECURITY_DNS_LOG_SLOW_LOOKUPS_THRESHOLD_MS_KEY =
"hadoop.security.dns.log-slow-lookups.threshold.ms";
public static final int
HADOOP_SECURITY_DNS_LOG_SLOW_LOOKUPS_THRESHOLD_MS_DEFAULT = 1000;
/**
* HA health monitor and failover controller.
*/
public static final String HA_HM_CONNECT_RETRY_INTERVAL_KEY =
"ha.health-monitor.connect-retry-interval.ms";
public static final long HA_HM_CONNECT_RETRY_INTERVAL_DEFAULT = 1000;
/* How often to check the service. */
public static final String HA_HM_CHECK_INTERVAL_KEY =
"ha.health-monitor.check-interval.ms";
public static final long HA_HM_CHECK_INTERVAL_DEFAULT = 1000;
/* How long to sleep after an unexpected RPC error. */
public static final String HA_HM_SLEEP_AFTER_DISCONNECT_KEY =
"ha.health-monitor.sleep-after-disconnect.ms";
public static final long HA_HM_SLEEP_AFTER_DISCONNECT_DEFAULT = 1000;
/** How many time to retry connecting to the service. */
public static final String HA_HM_RPC_CONNECT_MAX_RETRIES_KEY =
"ha.health-monitor.rpc.connect.max.retries";
public static final int HA_HM_RPC_CONNECT_MAX_RETRIES_DEFAULT = 1;
/** How often to retry connecting to the service. */
/* Timeout for the actual monitorHealth() calls. */
public static final String HA_HM_RPC_TIMEOUT_KEY =
"ha.health-monitor.rpc-timeout.ms";
public static final int HA_HM_RPC_TIMEOUT_DEFAULT = 45000;
/* Timeout that the FC waits for the new active to become active */
public static final String HA_FC_NEW_ACTIVE_TIMEOUT_KEY =
"ha.failover-controller.new-active.rpc-timeout.ms";
public static final int HA_FC_NEW_ACTIVE_TIMEOUT_DEFAULT = 60000;
/* Timeout that the FC waits for the old active to go to standby */
public static final String HA_FC_GRACEFUL_FENCE_TIMEOUT_KEY =
"ha.failover-controller.graceful-fence.rpc-timeout.ms";
public static final int HA_FC_GRACEFUL_FENCE_TIMEOUT_DEFAULT = 5000;
/* FC connection retries for graceful fencing */
public static final String HA_FC_GRACEFUL_FENCE_CONNECTION_RETRIES =
"ha.failover-controller.graceful-fence.connection.retries";
public static final int HA_FC_GRACEFUL_FENCE_CONNECTION_RETRIES_DEFAULT = 1;
/** number of zookeeper operation retry times in ActiveStandbyElector */
public static final String HA_FC_ELECTOR_ZK_OP_RETRIES_KEY =
"ha.failover-controller.active-standby-elector.zk.op.retries";
public static final int HA_FC_ELECTOR_ZK_OP_RETRIES_DEFAULT = 3;
/* Timeout that the CLI (manual) FC waits for monitorHealth, getServiceState */
public static final String HA_FC_CLI_CHECK_TIMEOUT_KEY =
"ha.failover-controller.cli-check.rpc-timeout.ms";
public static final int HA_FC_CLI_CHECK_TIMEOUT_DEFAULT = 20000;
/** Static user web-filter properties.
* See {@link StaticUserWebFilter}.
*/
public static final String HADOOP_HTTP_STATIC_USER =
"hadoop.http.staticuser.user";
public static final String DEFAULT_HADOOP_HTTP_STATIC_USER =
"dr.who";
/**
* User{@literal ->}groups static mapping to override the groups lookup
*/
public static final String HADOOP_USER_GROUP_STATIC_OVERRIDES =
"hadoop.user.group.static.mapping.overrides";
public static final String HADOOP_USER_GROUP_STATIC_OVERRIDES_DEFAULT =
"dr.who=;";
/** Enable/Disable aliases serving from jetty */
public static final String HADOOP_JETTY_LOGS_SERVE_ALIASES =
"hadoop.jetty.logs.serve.aliases";
public static final boolean DEFAULT_HADOOP_JETTY_LOGS_SERVE_ALIASES =
true;
/* Path to the Kerberos ticket cache. Setting this will force
* UserGroupInformation to use only this ticket cache file when creating a
* FileSystem instance.
*/
public static final String KERBEROS_TICKET_CACHE_PATH =
"hadoop.security.kerberos.ticket.cache.path";
public static final String HADOOP_SECURITY_UID_NAME_CACHE_TIMEOUT_KEY =
"hadoop.security.uid.cache.secs";
public static final long HADOOP_SECURITY_UID_NAME_CACHE_TIMEOUT_DEFAULT =
4*60*60; // 4 hours
public static final String IPC_CLIENT_ASYNC_CALLS_MAX_KEY =
"ipc.client.async.calls.max";
public static final int IPC_CLIENT_ASYNC_CALLS_MAX_DEFAULT = 100;
public static final String IPC_CLIENT_FALLBACK_TO_SIMPLE_AUTH_ALLOWED_KEY = "ipc.client.fallback-to-simple-auth-allowed";
public static final boolean IPC_CLIENT_FALLBACK_TO_SIMPLE_AUTH_ALLOWED_DEFAULT = false;
public static final String IPC_CLIENT_BIND_WILDCARD_ADDR_KEY = "ipc.client"
+ ".bind.wildcard.addr";
public static final boolean IPC_CLIENT_BIND_WILDCARD_ADDR_DEFAULT = false;
public static final String IPC_CLIENT_CONNECT_MAX_RETRIES_ON_SASL_KEY =
"ipc.client.connect.max.retries.on.sasl";
public static final int IPC_CLIENT_CONNECT_MAX_RETRIES_ON_SASL_DEFAULT = 5;
/** How often the server scans for idle connections */
public static final String IPC_CLIENT_CONNECTION_IDLESCANINTERVAL_KEY =
"ipc.client.connection.idle-scan-interval.ms";
/** Default value for IPC_SERVER_CONNECTION_IDLE_SCAN_INTERVAL_KEY */
public static final int IPC_CLIENT_CONNECTION_IDLESCANINTERVAL_DEFAULT =
10000;
public static final String HADOOP_USER_GROUP_METRICS_PERCENTILES_INTERVALS =
"hadoop.user.group.metrics.percentiles.intervals";
public static final String RPC_METRICS_QUANTILE_ENABLE =
"rpc.metrics.quantile.enable";
public static final boolean RPC_METRICS_QUANTILE_ENABLE_DEFAULT = false;
public static final String RPC_METRICS_PERCENTILES_INTERVALS_KEY =
"rpc.metrics.percentiles.intervals";
public static final String RPC_METRICS_TIME_UNIT = "rpc.metrics.timeunit";
/** Allowed hosts for nfs exports */
public static final String NFS_EXPORTS_ALLOWED_HOSTS_SEPARATOR = ";";
public static final String NFS_EXPORTS_ALLOWED_HOSTS_KEY = "nfs.exports.allowed.hosts";
public static final String NFS_EXPORTS_ALLOWED_HOSTS_KEY_DEFAULT = "* rw";
// HDFS client HTrace configuration.
public static final String FS_CLIENT_HTRACE_PREFIX = "fs.client.htrace.";
// Global ZooKeeper configuration keys
public static final String ZK_PREFIX = "hadoop.zk.";
/** ACL for the ZooKeeper ensemble. */
public static final String ZK_ACL = ZK_PREFIX + "acl";
public static final String ZK_ACL_DEFAULT = "world:anyone:rwcda";
/** Authentication for the ZooKeeper ensemble. */
public static final String ZK_AUTH = ZK_PREFIX + "auth";
/** Principal name for zookeeper servers. */
public static final String ZK_SERVER_PRINCIPAL = ZK_PREFIX + "server.principal";
/** Kerberos principal name for zookeeper connection. */
public static final String ZK_KERBEROS_PRINCIPAL = ZK_PREFIX + "kerberos.principal";
/** Kerberos keytab for zookeeper connection. */
public static final String ZK_KERBEROS_KEYTAB = ZK_PREFIX + "kerberos.keytab";
/** Address of the ZooKeeper ensemble. */
public static final String ZK_ADDRESS = ZK_PREFIX + "address";
/** Maximum number of retries for a ZooKeeper operation. */
public static final String ZK_NUM_RETRIES = ZK_PREFIX + "num-retries";
public static final int ZK_NUM_RETRIES_DEFAULT = 1000;
/** Timeout for a ZooKeeper operation in ZooKeeper in milliseconds. */
public static final String ZK_TIMEOUT_MS = ZK_PREFIX + "timeout-ms";
public static final int ZK_TIMEOUT_MS_DEFAULT = 10000;
/** How often to retry a ZooKeeper operation in milliseconds. */
public static final String ZK_RETRY_INTERVAL_MS =
ZK_PREFIX + "retry-interval-ms";
public static final int ZK_RETRY_INTERVAL_MS_DEFAULT = 1000;
/** Default domain name resolver for hadoop to use. */
public static final String HADOOP_DOMAINNAME_RESOLVER_IMPL =
"hadoop.domainname.resolver.impl";
public static final Class<? extends DomainNameResolver>
HADOOP_DOMAINNAME_RESOLVER_IMPL_DEFAULT =
DNSDomainNameResolver.class;
/*
* Ignore KMS default URI returned from NameNode.
* When set to true, kms uri is searched in the following order:
* 1. If there is a mapping in Credential's secrets map for namenode uri.
* 2. Fallback to local conf.
* If client choose to ignore KMS uri provided by NameNode then client
* should set KMS URI using 'hadoop.security.key.provider.path' to access
* the right KMS for encrypted files.
* */
public static final String DFS_CLIENT_IGNORE_NAMENODE_DEFAULT_KMS_URI =
"dfs.client.ignore.namenode.default.kms.uri";
public static final boolean
DFS_CLIENT_IGNORE_NAMENODE_DEFAULT_KMS_URI_DEFAULT = false;
/**
* Whether or not ThreadMXBean is used for getting thread info in JvmMetrics,
* ThreadGroup approach is preferred for better performance.
*/
public static final String HADOOP_METRICS_JVM_USE_THREAD_MXBEAN =
"hadoop.metrics.jvm.use-thread-mxbean";
public static final boolean HADOOP_METRICS_JVM_USE_THREAD_MXBEAN_DEFAULT =
false;
/** logging level for IOStatistics (debug or info). */
public static final String IOSTATISTICS_LOGGING_LEVEL
= "fs.iostatistics.logging.level";
/** DEBUG logging level for IOStatistics logging. */
public static final String IOSTATISTICS_LOGGING_LEVEL_DEBUG
= "debug";
/** WARN logging level for IOStatistics logging. */
public static final String IOSTATISTICS_LOGGING_LEVEL_WARN
= "warn";
/** ERROR logging level for IOStatistics logging. */
public static final String IOSTATISTICS_LOGGING_LEVEL_ERROR
= "error";
/** INFO logging level for IOStatistics logging. */
public static final String IOSTATISTICS_LOGGING_LEVEL_INFO
= "info";
/** Default value for IOStatistics logging level. */
public static final String IOSTATISTICS_LOGGING_LEVEL_DEFAULT
= IOSTATISTICS_LOGGING_LEVEL_DEBUG;
/**
* default hadoop temp dir on local system: {@value}.
*/
public static final String HADOOP_TMP_DIR = "hadoop.tmp.dir";
/**
* Thread-level IOStats Support.
* {@value}
*/
public static final String IOSTATISTICS_THREAD_LEVEL_ENABLED =
"fs.iostatistics.thread.level.enabled";
/**
* Default value for Thread-level IOStats Support is true.
*/
public static final boolean IOSTATISTICS_THREAD_LEVEL_ENABLED_DEFAULT =
true;
public static final String HADOOP_SECURITY_RESOLVER_IMPL =
"hadoop.security.resolver.impl";
}
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