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https://issues.apache.org/jira/browse/MAPREDUCE-3634?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13211946#comment-13211946
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Steve Loughran commented on MAPREDUCE-3634:
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we really ought to have a unified place where System.exit() calls; as when one
runs any bit of Hadoop in a containers (as HADOOP-7977 intends to do for OSGi),
the container will block those exits with a security manager and convert the
calls into security exceptions. A single exit method would enable such
exceptions to be logged, and conceivably handled slightly more gracefully (e.g.
tell the daemon to die).
> All daemons should crash instead of hanging around when their EventHandlers
> get exceptions
> ------------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-3634
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3634
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: mrv2
> Affects Versions: 0.23.0
> Reporter: Vinod Kumar Vavilapalli
> Assignee: Vinod Kumar Vavilapalli
> Fix For: 0.23.2
>
> Attachments: MAPREDUCE-3634-20120118.1.txt,
> MAPREDUCE-3634-20120119.txt, MAPREDUCE-3634-20120214.txt,
> MAPREDUCE-3634-20120214.txt
>
>
> We should make sure that the daemons crash in case the dispatchers get
> exceptions and stop processing. That way we will be debugging RM/NM/AM
> crashes instead of hard-to-track hanging jobs.
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