[jira] [Created] (MAPREDUCE-3883) Document yarn.nodemanager.delete.debug-delay-sec configuration property

["Eugene Koontz (Created) (JIRA)" <ji...@apache.org>]

Document yarn.nodemanager.delete.debug-delay-sec configuration property
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                 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:

{{
  <property>
    <name>yarn.nodemanager.delete.debug-delay-sec</name>
    <value>10000000</value>
  </property>
}}

(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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