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https://issues.apache.org/jira/browse/MAPREDUCE-5497?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13763770#comment-13763770
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Vinod Kumar Vavilapalli commented on MAPREDUCE-5497:
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+1, looks good. Checking this in.
> '5s sleep' in MRAppMaster.shutDownJob is only needed before stopping
> ClientService
> -----------------------------------------------------------------------------------
>
> Key: MAPREDUCE-5497
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5497
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Reporter: Jian He
> Assignee: Jian He
> Attachments: MAPREDUCE-5497.1.patch, MAPREDUCE-5497.1.patch,
> MAPREDUCE-5497.2.patch, MAPREDUCE-5497.patch
>
>
> Since the '5s sleep' is for the purpose to let clients know the final states,
> put it after other services are stopped and only before stopping
> ClientService is enough. This can reduce some race conditions like
> MAPREDUCE-5471
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