/**
* 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.mapreduce;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.util.Shell;
@InterfaceAudience.Private
@InterfaceStability.Evolving
public interface MRJobConfig {
// Put all of the attribute names in here so that Job and JobContext are
// consistent.
public static final String INPUT_FORMAT_CLASS_ATTR = "mapreduce.job.inputformat.class";
public static final String MAP_CLASS_ATTR = "mapreduce.job.map.class";
public static final String MAP_OUTPUT_COLLECTOR_CLASS_ATTR
= "mapreduce.job.map.output.collector.class";
public static final String COMBINE_CLASS_ATTR = "mapreduce.job.combine.class";
public static final String REDUCE_CLASS_ATTR = "mapreduce.job.reduce.class";
public static final String OUTPUT_FORMAT_CLASS_ATTR = "mapreduce.job.outputformat.class";
public static final String PARTITIONER_CLASS_ATTR = "mapreduce.job.partitioner.class";
public static final String SETUP_CLEANUP_NEEDED = "mapreduce.job.committer.setup.cleanup.needed";
public static final String TASK_CLEANUP_NEEDED = "mapreduce.job.committer.task.cleanup.needed";
public static final String JAR = "mapreduce.job.jar";
public static final String ID = "mapreduce.job.id";
public static final String JOB_NAME = "mapreduce.job.name";
public static final String JAR_UNPACK_PATTERN = "mapreduce.job.jar.unpack.pattern";
public static final String USER_NAME = "mapreduce.job.user.name";
public static final String PRIORITY = "mapreduce.job.priority";
public static final String QUEUE_NAME = "mapreduce.job.queuename";
public static final String JVM_NUMTASKS_TORUN = "mapreduce.job.jvm.numtasks";
public static final String SPLIT_FILE = "mapreduce.job.splitfile";
public static final String SPLIT_METAINFO_MAXSIZE = "mapreduce.job.split.metainfo.maxsize";
public static final long DEFAULT_SPLIT_METAINFO_MAXSIZE = 10000000L;
public static final String NUM_MAPS = "mapreduce.job.maps";
public static final String MAX_TASK_FAILURES_PER_TRACKER = "mapreduce.job.maxtaskfailures.per.tracker";
public static final String COMPLETED_MAPS_FOR_REDUCE_SLOWSTART = "mapreduce.job.reduce.slowstart.completedmaps";
public static final String NUM_REDUCES = "mapreduce.job.reduces";
public static final String SKIP_RECORDS = "mapreduce.job.skiprecords";
public static final String SKIP_OUTDIR = "mapreduce.job.skip.outdir";
public static final String SPECULATIVE_SLOWNODE_THRESHOLD = "mapreduce.job.speculative.slownodethreshold";
public static final String SPECULATIVE_SLOWTASK_THRESHOLD = "mapreduce.job.speculative.slowtaskthreshold";
public static final String SPECULATIVECAP = "mapreduce.job.speculative.speculativecap";
public static final String JOB_LOCAL_DIR = "mapreduce.job.local.dir";
public static final String OUTPUT_KEY_CLASS = "mapreduce.job.output.key.class";
public static final String OUTPUT_VALUE_CLASS = "mapreduce.job.output.value.class";
public static final String KEY_COMPARATOR = "mapreduce.job.output.key.comparator.class";
public static final String GROUP_COMPARATOR_CLASS = "mapreduce.job.output.group.comparator.class";
public static final String WORKING_DIR = "mapreduce.job.working.dir";
public static final String CLASSPATH_ARCHIVES = "mapreduce.job.classpath.archives";
public static final String CLASSPATH_FILES = "mapreduce.job.classpath.files";
public static final String CACHE_FILES = "mapreduce.job.cache.files";
public static final String CACHE_ARCHIVES = "mapreduce.job.cache.archives";
public static final String CACHE_FILES_SIZES = "mapreduce.job.cache.files.filesizes"; // internal use only
public static final String CACHE_ARCHIVES_SIZES = "mapreduce.job.cache.archives.filesizes"; // ditto
public static final String CACHE_LOCALFILES = "mapreduce.job.cache.local.files";
public static final String CACHE_LOCALARCHIVES = "mapreduce.job.cache.local.archives";
public static final String CACHE_FILE_TIMESTAMPS = "mapreduce.job.cache.files.timestamps";
public static final String CACHE_ARCHIVES_TIMESTAMPS = "mapreduce.job.cache.archives.timestamps";
public static final String CACHE_FILE_VISIBILITIES = "mapreduce.job.cache.files.visibilities";
public static final String CACHE_ARCHIVES_VISIBILITIES = "mapreduce.job.cache.archives.visibilities";
/**
* @deprecated Symlinks are always on and cannot be disabled.
*/
@Deprecated
public static final String CACHE_SYMLINK = "mapreduce.job.cache.symlink.create";
public static final String USER_LOG_RETAIN_HOURS = "mapreduce.job.userlog.retain.hours";
public static final String MAPREDUCE_JOB_USER_CLASSPATH_FIRST = "mapreduce.job.user.classpath.first";
public static final String MAPREDUCE_JOB_CLASSLOADER = "mapreduce.job.classloader";
public static final String MAPREDUCE_JOB_CLASSLOADER_SYSTEM_CLASSES = "mapreduce.job.classloader.system.classes";
public static final String IO_SORT_FACTOR = "mapreduce.task.io.sort.factor";
public static final String IO_SORT_MB = "mapreduce.task.io.sort.mb";
public static final String INDEX_CACHE_MEMORY_LIMIT = "mapreduce.task.index.cache.limit.bytes";
public static final String PRESERVE_FAILED_TASK_FILES = "mapreduce.task.files.preserve.failedtasks";
public static final String PRESERVE_FILES_PATTERN = "mapreduce.task.files.preserve.filepattern";
public static final String TASK_TEMP_DIR = "mapreduce.task.tmp.dir";
public static final String TASK_DEBUGOUT_LINES = "mapreduce.task.debugout.lines";
public static final String RECORDS_BEFORE_PROGRESS = "mapreduce.task.merge.progress.records";
public static final String SKIP_START_ATTEMPTS = "mapreduce.task.skip.start.attempts";
public static final String TASK_ATTEMPT_ID = "mapreduce.task.attempt.id";
public static final String TASK_ISMAP = "mapreduce.task.ismap";
public static final String TASK_PARTITION = "mapreduce.task.partition";
public static final String TASK_PROFILE = "mapreduce.task.profile";
public static final String TASK_PROFILE_PARAMS = "mapreduce.task.profile.params";
public static final String NUM_MAP_PROFILES = "mapreduce.task.profile.maps";
public static final String NUM_REDUCE_PROFILES = "mapreduce.task.profile.reduces";
public static final String TASK_MAP_PROFILE_PARAMS = "mapreduce.task.profile.map.params";
public static final String TASK_REDUCE_PROFILE_PARAMS = "mapreduce.task.profile.reduce.params";
public static final String TASK_TIMEOUT = "mapreduce.task.timeout";
public static final String TASK_TIMEOUT_CHECK_INTERVAL_MS = "mapreduce.task.timeout.check-interval-ms";
public static final String TASK_ID = "mapreduce.task.id";
public static final String TASK_OUTPUT_DIR = "mapreduce.task.output.dir";
public static final String TASK_USERLOG_LIMIT = "mapreduce.task.userlog.limit.kb";
public static final String MAP_SORT_SPILL_PERCENT = "mapreduce.map.sort.spill.percent";
public static final String MAP_INPUT_FILE = "mapreduce.map.input.file";
public static final String MAP_INPUT_PATH = "mapreduce.map.input.length";
public static final String MAP_INPUT_START = "mapreduce.map.input.start";
public static final String MAP_MEMORY_MB = "mapreduce.map.memory.mb";
public static final int DEFAULT_MAP_MEMORY_MB = 1024;
public static final String MAP_CPU_VCORES = "mapreduce.map.cpu.vcores";
public static final int DEFAULT_MAP_CPU_VCORES = 1;
public static final String MAP_ENV = "mapreduce.map.env";
public static final String MAP_JAVA_OPTS = "mapreduce.map.java.opts";
public static final String MAP_MAX_ATTEMPTS = "mapreduce.map.maxattempts";
public static final String MAP_DEBUG_SCRIPT = "mapreduce.map.debug.script";
public static final String MAP_SPECULATIVE = "mapreduce.map.speculative";
public static final String MAP_FAILURES_MAX_PERCENT = "mapreduce.map.failures.maxpercent";
public static final String MAP_SKIP_INCR_PROC_COUNT = "mapreduce.map.skip.proc-count.auto-incr";
public static final String MAP_SKIP_MAX_RECORDS = "mapreduce.map.skip.maxrecords";
public static final String MAP_COMBINE_MIN_SPILLS = "mapreduce.map.combine.minspills";
public static final String MAP_OUTPUT_COMPRESS = "mapreduce.map.output.compress";
public static final String MAP_OUTPUT_COMPRESS_CODEC = "mapreduce.map.output.compress.codec";
public static final String MAP_OUTPUT_KEY_CLASS = "mapreduce.map.output.key.class";
public static final String MAP_OUTPUT_VALUE_CLASS = "mapreduce.map.output.value.class";
public static final String MAP_OUTPUT_KEY_FIELD_SEPERATOR = "mapreduce.map.output.key.field.separator";
public static final String MAP_LOG_LEVEL = "mapreduce.map.log.level";
public static final String REDUCE_LOG_LEVEL = "mapreduce.reduce.log.level";
public static final String DEFAULT_LOG_LEVEL = "INFO";
public static final String REDUCE_MERGE_INMEM_THRESHOLD = "mapreduce.reduce.merge.inmem.threshold";
public static final String REDUCE_INPUT_BUFFER_PERCENT = "mapreduce.reduce.input.buffer.percent";
public static final String REDUCE_MARKRESET_BUFFER_PERCENT = "mapreduce.reduce.markreset.buffer.percent";
public static final String REDUCE_MARKRESET_BUFFER_SIZE = "mapreduce.reduce.markreset.buffer.size";
public static final String REDUCE_MEMORY_MB = "mapreduce.reduce.memory.mb";
public static final int DEFAULT_REDUCE_MEMORY_MB = 1024;
public static final String REDUCE_CPU_VCORES = "mapreduce.reduce.cpu.vcores";
public static final int DEFAULT_REDUCE_CPU_VCORES = 1;
public static final String REDUCE_MEMORY_TOTAL_BYTES = "mapreduce.reduce.memory.totalbytes";
public static final String SHUFFLE_INPUT_BUFFER_PERCENT = "mapreduce.reduce.shuffle.input.buffer.percent";
public static final String SHUFFLE_MEMORY_LIMIT_PERCENT
= "mapreduce.reduce.shuffle.memory.limit.percent";
public static final String SHUFFLE_MERGE_PERCENT = "mapreduce.reduce.shuffle.merge.percent";
public static final String REDUCE_FAILURES_MAXPERCENT = "mapreduce.reduce.failures.maxpercent";
public static final String REDUCE_ENV = "mapreduce.reduce.env";
public static final String REDUCE_JAVA_OPTS = "mapreduce.reduce.java.opts";
public static final String MAPREDUCE_JOB_DIR = "mapreduce.job.dir";
public static final String REDUCE_MAX_ATTEMPTS = "mapreduce.reduce.maxattempts";
public static final String SHUFFLE_PARALLEL_COPIES = "mapreduce.reduce.shuffle.parallelcopies";
public static final String REDUCE_DEBUG_SCRIPT = "mapreduce.reduce.debug.script";
public static final String REDUCE_SPECULATIVE = "mapreduce.reduce.speculative";
public static final String SHUFFLE_CONNECT_TIMEOUT = "mapreduce.reduce.shuffle.connect.timeout";
public static final String SHUFFLE_READ_TIMEOUT = "mapreduce.reduce.shuffle.read.timeout";
public static final String SHUFFLE_FETCH_FAILURES = "mapreduce.reduce.shuffle.maxfetchfailures";
public static final String SHUFFLE_NOTIFY_READERROR = "mapreduce.reduce.shuffle.notify.readerror";
public static final String MAX_SHUFFLE_FETCH_RETRY_DELAY = "mapreduce.reduce.shuffle.retry-delay.max.ms";
public static final long DEFAULT_MAX_SHUFFLE_FETCH_RETRY_DELAY = 60000;
public static final String REDUCE_SKIP_INCR_PROC_COUNT = "mapreduce.reduce.skip.proc-count.auto-incr";
public static final String REDUCE_SKIP_MAXGROUPS = "mapreduce.reduce.skip.maxgroups";
public static final String REDUCE_MEMTOMEM_THRESHOLD = "mapreduce.reduce.merge.memtomem.threshold";
public static final String REDUCE_MEMTOMEM_ENABLED = "mapreduce.reduce.merge.memtomem.enabled";
public static final String COMBINE_RECORDS_BEFORE_PROGRESS = "mapreduce.task.combine.progress.records";
public static final String JOB_NAMENODES = "mapreduce.job.hdfs-servers";
public static final String JOB_JOBTRACKER_ID = "mapreduce.job.kerberos.jtprinicipal";
public static final String JOB_CANCEL_DELEGATION_TOKEN = "mapreduce.job.complete.cancel.delegation.tokens";
public static final String JOB_ACL_VIEW_JOB = "mapreduce.job.acl-view-job";
public static final String DEFAULT_JOB_ACL_VIEW_JOB = " ";
public static final String JOB_ACL_MODIFY_JOB = "mapreduce.job.acl-modify-job";
public static final String DEFAULT_JOB_ACL_MODIFY_JOB = " ";
/* config for tracking the local file where all the credentials for the job
* credentials.
*/
public static final String MAPREDUCE_JOB_CREDENTIALS_BINARY =
"mapreduce.job.credentials.binary";
/* Configs for tracking ids of tokens used by a job */
public static final String JOB_TOKEN_TRACKING_IDS_ENABLED =
"mapreduce.job.token.tracking.ids.enabled";
public static final boolean DEFAULT_JOB_TOKEN_TRACKING_IDS_ENABLED = false;
public static final String JOB_TOKEN_TRACKING_IDS =
"mapreduce.job.token.tracking.ids";
public static final String JOB_SUBMITHOST =
"mapreduce.job.submithostname";
public static final String JOB_SUBMITHOSTADDR =
"mapreduce.job.submithostaddress";
public static final String COUNTERS_MAX_KEY = "mapreduce.job.counters.max";
public static final int COUNTERS_MAX_DEFAULT = 120;
public static final String COUNTER_GROUP_NAME_MAX_KEY = "mapreduce.job.counters.group.name.max";
public static final int COUNTER_GROUP_NAME_MAX_DEFAULT = 128;
public static final String COUNTER_NAME_MAX_KEY = "mapreduce.job.counters.counter.name.max";
public static final int COUNTER_NAME_MAX_DEFAULT = 64;
public static final String COUNTER_GROUPS_MAX_KEY = "mapreduce.job.counters.groups.max";
public static final int COUNTER_GROUPS_MAX_DEFAULT = 50;
public static final String JOB_UBERTASK_ENABLE =
"mapreduce.job.ubertask.enable";
public static final String JOB_UBERTASK_MAXMAPS =
"mapreduce.job.ubertask.maxmaps";
public static final String JOB_UBERTASK_MAXREDUCES =
"mapreduce.job.ubertask.maxreduces";
public static final String JOB_UBERTASK_MAXBYTES =
"mapreduce.job.ubertask.maxbytes";
public static final String MR_PREFIX = "yarn.app.mapreduce.";
public static final String MR_AM_PREFIX = MR_PREFIX + "am.";
/** The number of client retires to the AM - before reconnecting to the RM
* to fetch Application State.
*/
public static final String MR_CLIENT_TO_AM_IPC_MAX_RETRIES =
MR_PREFIX + "client-am.ipc.max-retries";
public static final int DEFAULT_MR_CLIENT_TO_AM_IPC_MAX_RETRIES = 3;
/**
* The number of client retries to the RM/HS before throwing exception.
*/
public static final String MR_CLIENT_MAX_RETRIES =
MR_PREFIX + "client.max-retries";
public static final int DEFAULT_MR_CLIENT_MAX_RETRIES = 3;
/** The staging directory for map reduce.*/
public static final String MR_AM_STAGING_DIR =
MR_AM_PREFIX+"staging-dir";
public static final String DEFAULT_MR_AM_STAGING_DIR =
"/tmp/hadoop-yarn/staging";
/** The amount of memory the MR app master needs.*/
public static final String MR_AM_VMEM_MB =
MR_AM_PREFIX+"resource.mb";
public static final int DEFAULT_MR_AM_VMEM_MB = 1536;
/** The number of virtual cores the MR app master needs.*/
public static final String MR_AM_CPU_VCORES =
MR_AM_PREFIX+"resource.cpu-vcores";
public static final int DEFAULT_MR_AM_CPU_VCORES = 1;
/** Command line arguments passed to the MR app master.*/
public static final String MR_AM_COMMAND_OPTS =
MR_AM_PREFIX+"command-opts";
public static final String DEFAULT_MR_AM_COMMAND_OPTS = "-Xmx1024m";
/** Admin command opts passed to the MR app master.*/
public static final String MR_AM_ADMIN_COMMAND_OPTS =
MR_AM_PREFIX+"admin-command-opts";
public static final String DEFAULT_MR_AM_ADMIN_COMMAND_OPTS = "";
/** Root Logging level passed to the MR app master.*/
public static final String MR_AM_LOG_LEVEL =
MR_AM_PREFIX+"log.level";
public static final String DEFAULT_MR_AM_LOG_LEVEL = "INFO";
/**The number of splits when reporting progress in MR*/
public static final String MR_AM_NUM_PROGRESS_SPLITS =
MR_AM_PREFIX+"num-progress-splits";
public static final int DEFAULT_MR_AM_NUM_PROGRESS_SPLITS = 12;
/**
* Upper limit on the number of threads user to launch containers in the app
* master. Expect level config, you shouldn't be needing it in most cases.
*/
public static final String MR_AM_CONTAINERLAUNCHER_THREAD_COUNT_LIMIT =
MR_AM_PREFIX+"containerlauncher.thread-count-limit";
public static final int DEFAULT_MR_AM_CONTAINERLAUNCHER_THREAD_COUNT_LIMIT =
500;
/** Number of threads to handle job client RPC requests.*/
public static final String MR_AM_JOB_CLIENT_THREAD_COUNT =
MR_AM_PREFIX + "job.client.thread-count";
public static final int DEFAULT_MR_AM_JOB_CLIENT_THREAD_COUNT = 1;
/**
* Range of ports that the MapReduce AM can use when binding. Leave blank
* if you want all possible ports.
*/
public static final String MR_AM_JOB_CLIENT_PORT_RANGE =
MR_AM_PREFIX + "job.client.port-range";
/** Enable blacklisting of nodes in the job.*/
public static final String MR_AM_JOB_NODE_BLACKLISTING_ENABLE =
MR_AM_PREFIX + "job.node-blacklisting.enable";
/** Ignore blacklisting if a certain percentage of nodes have been blacklisted */
public static final String MR_AM_IGNORE_BLACKLISTING_BLACKLISTED_NODE_PERECENT =
MR_AM_PREFIX + "job.node-blacklisting.ignore-threshold-node-percent";
public static final int DEFAULT_MR_AM_IGNORE_BLACKLISTING_BLACKLISTED_NODE_PERCENT =
33;
/** Enable job recovery.*/
public static final String MR_AM_JOB_RECOVERY_ENABLE =
MR_AM_PREFIX + "job.recovery.enable";
public static final boolean MR_AM_JOB_RECOVERY_ENABLE_DEFAULT = true;
/**
* Limit on the number of reducers that can be preempted to ensure that at
* least one map task can run if it needs to. Percentage between 0.0 and 1.0
*/
public static final String MR_AM_JOB_REDUCE_PREEMPTION_LIMIT =
MR_AM_PREFIX + "job.reduce.preemption.limit";
public static final float DEFAULT_MR_AM_JOB_REDUCE_PREEMPTION_LIMIT = 0.5f;
/** AM ACL disabled. **/
public static final String JOB_AM_ACCESS_DISABLED =
"mapreduce.job.am-access-disabled";
public static final boolean DEFAULT_JOB_AM_ACCESS_DISABLED = false;
/**
* Limit reduces starting until a certain percentage of maps have finished.
* Percentage between 0.0 and 1.0
*/
public static final String MR_AM_JOB_REDUCE_RAMPUP_UP_LIMIT =
MR_AM_PREFIX + "job.reduce.rampup.limit";
public static final float DEFAULT_MR_AM_JOB_REDUCE_RAMP_UP_LIMIT = 0.5f;
/** The class that should be used for speculative execution calculations.*/
public static final String MR_AM_JOB_SPECULATOR =
MR_AM_PREFIX + "job.speculator.class";
/** Class used to estimate task resource needs.*/
public static final String MR_AM_TASK_ESTIMATOR =
MR_AM_PREFIX + "job.task.estimator.class";
/** The lambda value in the smoothing function of the task estimator.*/
public static final String MR_AM_TASK_ESTIMATOR_SMOOTH_LAMBDA_MS =
MR_AM_PREFIX
+ "job.task.estimator.exponential.smooth.lambda-ms";
public static final long DEFAULT_MR_AM_TASK_ESTIMATOR_SMOOTH_LAMBDA_MS =
1000L * 60;
/** true if the smoothing rate should be exponential.*/
public static final String MR_AM_TASK_ESTIMATOR_EXPONENTIAL_RATE_ENABLE =
MR_AM_PREFIX + "job.task.estimator.exponential.smooth.rate";
/** The number of threads used to handle task RPC calls.*/
public static final String MR_AM_TASK_LISTENER_THREAD_COUNT =
MR_AM_PREFIX + "job.task.listener.thread-count";
public static final int DEFAULT_MR_AM_TASK_LISTENER_THREAD_COUNT = 30;
/** How often the AM should send heartbeats to the RM.*/
public static final String MR_AM_TO_RM_HEARTBEAT_INTERVAL_MS =
MR_AM_PREFIX + "scheduler.heartbeat.interval-ms";
public static final int DEFAULT_MR_AM_TO_RM_HEARTBEAT_INTERVAL_MS = 1000;
/**
* If contact with RM is lost, the AM will wait MR_AM_TO_RM_WAIT_INTERVAL_MS
* milliseconds before aborting. During this interval, AM will still try
* to contact the RM.
*/
public static final String MR_AM_TO_RM_WAIT_INTERVAL_MS =
MR_AM_PREFIX + "scheduler.connection.wait.interval-ms";
public static final int DEFAULT_MR_AM_TO_RM_WAIT_INTERVAL_MS = 360000;
/**
* How long to wait in milliseconds for the output committer to cancel
* an operation when the job is being killed
*/
public static final String MR_AM_COMMITTER_CANCEL_TIMEOUT_MS =
MR_AM_PREFIX + "job.committer.cancel-timeout";
public static final int DEFAULT_MR_AM_COMMITTER_CANCEL_TIMEOUT_MS =
60 * 1000;
/**
* Defines a time window in milliseconds for output committer operations.
* If contact with the RM has occurred within this window then commit
* operations are allowed, otherwise the AM will not allow output committer
* operations until contact with the RM has been re-established.
*/
public static final String MR_AM_COMMIT_WINDOW_MS =
MR_AM_PREFIX + "job.committer.commit-window";
public static final int DEFAULT_MR_AM_COMMIT_WINDOW_MS = 10 * 1000;
/**
* Boolean. Create the base dirs in the JobHistoryEventHandler
* Set to false for multi-user clusters. This is an internal config that
* is set by the MR framework and read by it too.
*/
public static final String MR_AM_CREATE_JH_INTERMEDIATE_BASE_DIR =
MR_AM_PREFIX + "create-intermediate-jh-base-dir";
public static final String MR_AM_HISTORY_MAX_UNFLUSHED_COMPLETE_EVENTS =
MR_AM_PREFIX + "history.max-unflushed-events";
public static final int DEFAULT_MR_AM_HISTORY_MAX_UNFLUSHED_COMPLETE_EVENTS =
200;
public static final String MR_AM_HISTORY_JOB_COMPLETE_UNFLUSHED_MULTIPLIER =
MR_AM_PREFIX + "history.job-complete-unflushed-multiplier";
public static final int DEFAULT_MR_AM_HISTORY_JOB_COMPLETE_UNFLUSHED_MULTIPLIER =
30;
public static final String MR_AM_HISTORY_COMPLETE_EVENT_FLUSH_TIMEOUT_MS =
MR_AM_PREFIX + "history.complete-event-flush-timeout";
public static final long DEFAULT_MR_AM_HISTORY_COMPLETE_EVENT_FLUSH_TIMEOUT_MS =
30 * 1000l;
public static final String MR_AM_HISTORY_USE_BATCHED_FLUSH_QUEUE_SIZE_THRESHOLD =
MR_AM_PREFIX + "history.use-batched-flush.queue-size.threshold";
public static final int DEFAULT_MR_AM_HISTORY_USE_BATCHED_FLUSH_QUEUE_SIZE_THRESHOLD =
50;
public static final String MR_AM_ENV =
MR_AM_PREFIX + "env";
public static final String MR_AM_ADMIN_USER_ENV =
MR_AM_PREFIX + "admin.user.env";
public static final String MAPRED_MAP_ADMIN_JAVA_OPTS =
"mapreduce.admin.map.child.java.opts";
public static final String MAPRED_REDUCE_ADMIN_JAVA_OPTS =
"mapreduce.admin.reduce.child.java.opts";
public static final String DEFAULT_MAPRED_ADMIN_JAVA_OPTS =
"-Djava.net.preferIPv4Stack=true " +
"-Dhadoop.metrics.log.level=WARN ";
public static final String MAPRED_ADMIN_USER_SHELL =
"mapreduce.admin.user.shell";
public static final String DEFAULT_SHELL = "/bin/bash";
public static final String MAPRED_ADMIN_USER_ENV =
"mapreduce.admin.user.env";
public static final String DEFAULT_MAPRED_ADMIN_USER_ENV =
"LD_LIBRARY_PATH=$HADOOP_COMMON_HOME/lib/native";
public static final String WORKDIR = "work";
public static final String OUTPUT = "output";
public static final String HADOOP_WORK_DIR = "HADOOP_WORK_DIR";
// Environment variables used by Pipes. (TODO: these
// do not appear to be used by current pipes source code!)
public static final String STDOUT_LOGFILE_ENV = "STDOUT_LOGFILE_ENV";
public static final String STDERR_LOGFILE_ENV = "STDERR_LOGFILE_ENV";
// This should be the directory where splits file gets localized on the node
// running ApplicationMaster.
public static final String JOB_SUBMIT_DIR = "jobSubmitDir";
// This should be the name of the localized job-configuration file on the node
// running ApplicationMaster and Task
public static final String JOB_CONF_FILE = "job.xml";
// This should be the name of the localized job-jar file on the node running
// individual containers/tasks.
public static final String JOB_JAR = "job.jar";
public static final String JOB_SPLIT = "job.split";
public static final String JOB_SPLIT_METAINFO = "job.splitmetainfo";
public static final String APPLICATION_MASTER_CLASS =
"org.apache.hadoop.mapreduce.v2.app.MRAppMaster";
public static final String MAPREDUCE_V2_CHILD_CLASS =
"org.apache.hadoop.mapred.YarnChild";
public static final String APPLICATION_ATTEMPT_ID =
"mapreduce.job.application.attempt.id";
/**
* Job end notification.
*/
public static final String MR_JOB_END_NOTIFICATION_URL =
"mapreduce.job.end-notification.url";
public static final String MR_JOB_END_NOTIFICATION_PROXY =
"mapreduce.job.end-notification.proxy";
public static final String MR_JOB_END_NOTIFICATION_TIMEOUT =
"mapreduce.job.end-notification.timeout";
public static final String MR_JOB_END_RETRY_ATTEMPTS =
"mapreduce.job.end-notification.retry.attempts";
public static final String MR_JOB_END_RETRY_INTERVAL =
"mapreduce.job.end-notification.retry.interval";
public static final String MR_JOB_END_NOTIFICATION_MAX_ATTEMPTS =
"mapreduce.job.end-notification.max.attempts";
public static final String MR_JOB_END_NOTIFICATION_MAX_RETRY_INTERVAL =
"mapreduce.job.end-notification.max.retry.interval";
public static final int DEFAULT_MR_JOB_END_NOTIFICATION_TIMEOUT =
5000;
/*
* MR AM Service Authorization
*/
public static final String
MR_AM_SECURITY_SERVICE_AUTHORIZATION_TASK_UMBILICAL =
"security.job.task.protocol.acl";
public static final String
MR_AM_SECURITY_SERVICE_AUTHORIZATION_CLIENT =
"security.job.client.protocol.acl";
/**
* CLASSPATH for all YARN MapReduce applications.
*/
public static final String MAPREDUCE_APPLICATION_CLASSPATH =
"mapreduce.application.classpath";
/**
* Default CLASSPATH for all YARN MapReduce applications.
*/
public final String
DEFAULT_MAPREDUCE_APPLICATION_CLASSPATH = Shell.WINDOWS ?
"%HADOOP_MAPRED_HOME%\\share\\hadoop\\mapreduce\\*,"
+ "%HADOOP_MAPRED_HOME%\\share\\hadoop\\mapreduce\\lib\\*" :
"$HADOOP_MAPRED_HOME/share/hadoop/mapreduce/*,"
+ "$HADOOP_MAPRED_HOME/share/hadoop/mapreduce/lib/*";
public static final String WORKFLOW_ID = "mapreduce.workflow.id";
public static final String WORKFLOW_NAME = "mapreduce.workflow.name";
public static final String WORKFLOW_NODE_NAME =
"mapreduce.workflow.node.name";
public static final String WORKFLOW_ADJACENCY_PREFIX_STRING =
"mapreduce.workflow.adjacency.";
public static final String WORKFLOW_ADJACENCY_PREFIX_PATTERN =
"^mapreduce\\.workflow\\.adjacency\\..+";
public static final String WORKFLOW_TAGS = "mapreduce.workflow.tags";
/**
* The maximum number of application attempts.
* It is a application-specific setting.
*/
public static final String MR_AM_MAX_ATTEMPTS = "mapreduce.am.max-attempts";
public static final int DEFAULT_MR_AM_MAX_ATTEMPTS = 2;
public static final String MR_APPLICATION_TYPE = "MAPREDUCE";
}