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From "Eugene Koontz (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-3883) Document yarn.nodemanager.delete.debug-delay-sec configuration property
Date Mon, 20 Feb 2012 23:39:34 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-3883?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13212221#comment-13212221

Eugene Koontz commented on MAPREDUCE-3883:

Sure, will do. Assigning to myself.
> Document yarn.nodemanager.delete.debug-delay-sec configuration property
> -----------------------------------------------------------------------
>                 Key: MAPREDUCE-3883
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3883
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: documentation, mrv2
>            Reporter: Eugene Koontz
>            Priority: Minor
>              Labels: newbie
>             Fix For: 0.23.2
> If you are using Yarn's nodemanager, you can add to your configuration:
> {noformat}
>   <property>
>     <name>yarn.nodemanager.delete.debug-delay-sec</name>
>     <value>10000000</value>
>   </property>
> {noformat}
> to save the environmental directories of the applications (by default in {{/tmp/nm-local-dir}})
that the nodemanager starts so that you can examine them later.
> Set the above value long enough so that you have time to examine the contents before
the nodemanager's {{DeletionService}} removes them.
> This setting is defined in {{hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/conf/YarnConfiguration.java}},
and used in {{hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/DeletionService.java}}.
> It's a useful configuration setting for developers, but seems not to be documented currently
(see http://hadoop.apache.org/common/docs/r0.23.0/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-common/yarn-default.xml).

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