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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-3883) Document yarn.nodemanager.delete.debug-delay-sec configuration property
Date Fri, 27 Apr 2012 22:28:50 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-3883?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13264044#comment-13264044

Hadoop QA commented on MAPREDUCE-3883:

-1 overall.  Here are the results of testing the latest attachment 
  against trunk revision .

    +1 @author.  The patch does not contain any @author tags.

    +0 tests included.  The patch appears to be a documentation patch that doesn't require

    +1 javadoc.  The javadoc tool did not generate any warning messages.

    +1 javac.  The applied patch does not increase the total number of javac compiler warnings.

    +1 eclipse:eclipse.  The patch built with eclipse:eclipse.

    +1 findbugs.  The patch does not introduce any new Findbugs (version 1.3.9) warnings.

    +1 release audit.  The applied patch does not increase the total number of release audit

    -1 core tests.  The patch failed these unit tests:

    +1 contrib tests.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/2324//testReport/
Console output: https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/2324//console

This message is automatically generated.
> 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
>            Assignee: Eugene Koontz
>            Priority: Minor
>              Labels: newbie
>             Fix For: 0.23.2, 2.0.0, trunk
>         Attachments: MAPREDUCE-3883.patch, MAPREDUCE-3883.patch, MAPREDUCE-3883.patch
> 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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