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https://issues.apache.org/jira/browse/MAPREDUCE-5131?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13623783#comment-13623783
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Tsz Wo (Nicholas), SZE commented on MAPREDUCE-5131:
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The defaultPolicy is to retry on JobTrackerNotYetInitializedException. For
SafeModeException, defaultPolicy is equivalent to TRY_ONCE_THEN_FAIL since
SafeModeException will be thrown as a RemoteException. So
remoteExceptionToPolicyMap.put(SafeModeException.class, defaultPolicy) is the
same as remoteExceptionToPolicyMap.put(SafeModeException.class,
TRY_ONCE_THEN_FAIL).
I think it is simpler to change RetryUtils.getDefaultRetryPolicy to support
multiple exceptions.
> Provide better handling of job status related apis during JT restart
> --------------------------------------------------------------------
>
> Key: MAPREDUCE-5131
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5131
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Reporter: Arun C Murthy
> Assignee: Arun C Murthy
> Attachments: MAPREDUCE-5131.patch
>
>
> I've seen pig/hive applications bork during JT restart since they get NPEs -
> this is due to fact that jobs are not really inited, but are submitted.
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