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From "Eugene Koontz (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAPREDUCE-3883) Document yarn.nodemanager.delete.debug-delay-sec configuration property
Date Mon, 20 Feb 2012 22:45:34 GMT
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
            Reporter: Eugene Koontz
            Priority: Minor
             Fix For: 0.23.2

If you are using Yarn's nodemanager, you can add to your configuration:


(set the {{<value>}} large enough so that you can examine the contents before the {{DeletionService}}
deletes them).

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.

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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