| <?xml version="1.0"?> |
| <?xml-stylesheet type="text/xsl" href="configuration.xsl"?> |
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| Licensed 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 |
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| 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. See accompanying LICENSE file. |
| --> |
| |
| <!-- Put site-specific property overrides in this file. --> |
| |
| <configuration> |
| |
| <property> |
| <name>mapred.tasktracker.tasks.sleeptime-before-sigkill</name> |
| <value>250</value> |
| <description>Normally, this is the amount of time before killing |
| processes, and the recommended-default is 5.000 seconds - a value of |
| 5000 here. In this case, we are using it solely to blast tasks before |
| killing them, and killing them very quickly (1/4 second) to guarantee |
| that we do not leave VMs around for later jobs. |
| </description> |
| </property> |
| |
| <property> |
| <name>mapred.system.dir</name> |
| <value>/mapred/mapredsystem</value> |
| <final>true</final> |
| </property> |
| |
| <property> |
| <name>mapred.job.tracker</name> |
| <value>${HADOOP_JT_HOST}:9000</value> |
| <final>true</final> |
| </property> |
| |
| <property> |
| <name>mapred.job.tracker.http.address</name> |
| <value>${HADOOP_JT_HOST}:50030</value> |
| <final>true</final> |
| </property> |
| |
| <property> |
| <name>mapred.local.dir</name> |
| <value>${HADOOP_MAPRED_DIR}</value> |
| <final>true</final> |
| </property> |
| |
| <property> |
| <name>mapreduce.cluster.administrators</name> |
| <value>${HADOOP_MR_USER}</value> |
| </property> |
| |
| <property> |
| <name>mapred.map.tasks.speculative.execution</name> |
| <value>false</value> |
| <description>If true, then multiple instances of some map tasks |
| may be executed in parallel.</description> |
| </property> |
| |
| <property> |
| <name>mapred.reduce.tasks.speculative.execution</name> |
| <value>false</value> |
| <description>If true, then multiple instances of some reduce tasks |
| may be executed in parallel.</description> |
| </property> |
| |
| <property> |
| <name>mapred.output.compression.type</name> |
| <value>BLOCK</value> |
| <description>If the job outputs are to compressed as SequenceFiles, how |
| should they be compressed? Should be one of NONE, RECORD or BLOCK. |
| </description> |
| </property> |
| |
| <property> |
| <name>jetty.connector</name> |
| <value>org.mortbay.jetty.nio.SelectChannelConnector</value> |
| </property> |
| |
| <property> |
| <name>mapred.task.tracker.task-controller</name> |
| <value>${TASK_CONTROLLER}</value> |
| </property> |
| |
| <property> |
| <name>mapred.child.root.logger</name> |
| <value>INFO,TLA</value> |
| </property> |
| |
| <property> |
| <name>mapred.child.java.opts</name> |
| <value>-server -Xmx640m -Djava.net.preferIPv4Stack=true</value> |
| </property> |
| |
| <property> |
| <name>mapred.child.ulimit</name> |
| <value>8388608</value> |
| </property> |
| |
| <property> |
| <name>mapred.job.tracker.persist.jobstatus.active</name> |
| <value>true</value> |
| <description>Indicates if persistency of job status information is |
| active or not. |
| </description> |
| </property> |
| |
| <property> |
| <name>mapred.job.tracker.persist.jobstatus.dir</name> |
| <value>file:///${HADOOP_LOG_DIR}/${HADOOP_MR_USER}/jobstatus</value> |
| <description>The directory where the job status information is persisted |
| in a file system to be available after it drops of the memory queue and |
| between jobtracker restarts. |
| </description> |
| </property> |
| |
| <property> |
| <name>mapred.job.tracker.history.completed.location</name> |
| <value>/mapred/history/done</value> |
| </property> |
| |
| <property> |
| <name>mapred.heartbeats.in.second</name> |
| <value>200</value> |
| <description>to enable HADOOP:5784</description> |
| </property> |
| |
| <property> |
| <name>mapreduce.tasktracker.outofband.heartbeat</name> |
| <value>true</value> |
| <description>to enable MAPREDUCE:270</description> |
| </property> |
| |
| <property> |
| <name>mapred.jobtracker.maxtasks.per.job</name> |
| <value>200000</value> |
| <final>true</final> |
| <description>The maximum number of tasks for a single job. |
| A value of -1 indicates that there is no maximum. |
| </description> |
| </property> |
| |
| <property> |
| <name>mapreduce.jobtracker.kerberos.principal</name> |
| <value>jt/_HOST@${local.realm}</value> |
| <description> |
| JT principal |
| </description> |
| </property> |
| |
| <property> |
| <name>mapreduce.tasktracker.kerberos.principal</name> |
| <value>tt/_HOST@${local.realm}</value> |
| <description> |
| TT principal. |
| </description> |
| </property> |
| |
| |
| <property> |
| <name>hadoop.job.history.user.location</name> |
| <value>none</value> |
| </property> |
| |
| <property> |
| <name>mapreduce.jobtracker.keytab.file</name> |
| <value>/etc/security/keytabs/jt.service.keytab</value> |
| <description> |
| The keytab for the jobtracker principal. |
| </description> |
| </property> |
| |
| <property> |
| <name>mapreduce.tasktracker.keytab.file</name> |
| <value>/etc/security/keytabs/tt.service.keytab</value> |
| <description>The filename of the keytab for the task tracker</description> |
| </property> |
| |
| <property> |
| <name>mapreduce.jobtracker.staging.root.dir</name> |
| <value>/user</value> |
| <description>The Path prefix for where the staging directories should be |
| placed. The next level is always the user's |
| name. It is a path in the default file system. |
| </description> |
| </property> |
| |
| |
| <property> |
| <name>mapreduce.job.acl-modify-job</name> |
| <value></value> |
| </property> |
| |
| <property> |
| <name>mapreduce.job.acl-view-job</name> |
| <value>Dr.Who</value> |
| </property> |
| |
| <property> |
| <name>mapreduce.tasktracker.group</name> |
| <value>${HADOOP_GROUP}</value> |
| <description>The group that the task controller uses for accessing the |
| task controller. The mapred user must be a member and users should *not* |
| be members. |
| </description> |
| </property> |
| |
| <property> |
| <name>mapred.acls.enabled</name> |
| <value>true</value> |
| </property> |
| |
| <property> |
| <name>mapred.jobtracker.taskScheduler</name> |
| <value>org.apache.hadoop.mapred.CapacityTaskScheduler</value> |
| </property> |
| <property> |
| <name>mapred.queue.names</name> |
| <value>default</value> |
| </property> |
| |
| <!-- settings for the history server --> |
| <property> |
| <name>mapreduce.history.server.embedded</name> |
| <value>false</value> |
| </property> |
| <property> |
| <name>mapreduce.history.server.http.address</name> |
| <value>${HADOOP_JT_HOST}:51111</value> |
| </property> |
| <property> |
| <name>mapreduce.jobhistory.kerberos.principal</name> |
| <value>jt/_HOST@${local.realm}</value> |
| <description>history server principal</description> |
| </property> |
| <property> |
| <name>mapreduce.jobhistory.keytab.file</name> |
| <value>/etc/security/keytabs/jt.service.keytab</value> |
| <description> |
| The keytab for the jobtracker principal. |
| </description> |
| </property> |
| |
| <property> |
| <name>mapred.hosts</name> |
| <value>${HADOOP_CONF_DIR}/mapred.include</value> |
| <description>Names a file that contains the list of nodes that may |
| connect to the jobtracker. If the value is empty, all hosts are |
| permitted.</description> |
| </property> |
| |
| <property> |
| <name>mapred.hosts.exclude</name> |
| <value>${HADOOP_CONF_DIR}/mapred.exclude</value> |
| <description>Names a file that contains the list of hosts that |
| should be excluded by the jobtracker. If the value is empty, no |
| hosts are excluded.</description> |
| </property> |
| <property> |
| <name>mapred.jobtracker.retirejob.check</name> |
| <value>10000</value> |
| </property> |
| <property> |
| <name>mapred.jobtracker.retirejob.interval</name> |
| <value>0</value> |
| </property> |
| |
| <property> |
| <name>mapreduce.cluster.mapmemory.mb</name> |
| <value>${MAPREDUCE_CLUSTER_MAPMEMORY_MB}</value> |
| </property> |
| |
| <property> |
| <name>mapreduce.cluster.reducememory.mb</name> |
| <value>${MAPREDUCE_CLUSTER_REDUCEMEMORY_MB}</value> |
| </property> |
| |
| <property> |
| <name>mapreduce.jobtracker.maxmapmemory.mb</name> |
| <value>${MAPREDUCE_JOBTRACKER_MAXMAPMEMORY_MB}</value> |
| </property> |
| |
| <property> |
| <name>mapreduce.jobtracker.maxreducememory.mb</name> |
| <value>${MAPREDUCE_JOBTRACKER_MAXREDUCEMEMORY_MB}</value> |
| </property> |
| |
| <property> |
| <name>mapreduce.map.memory.mb</name> |
| <value>${MAPREDUCE_MAP_MEMORY_MB}</value> |
| </property> |
| |
| <property> |
| <name>mapreduce.reduce.memory.mb</name> |
| <value>${MAPREDUCE_REDUCE_MEMORY_MB}</value> |
| </property> |
| </configuration> |