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https://issues.apache.org/jira/browse/MAPREDUCE-4205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13265177#comment-13265177
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Alejandro Abdelnur commented on MAPREDUCE-4205:
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there are not testcases, the patch just retrofits the use of JVM shutdown hook
to use the ShutdownHookManager (HADOOP-8325)
> retrofit all JVM shutdown hooks to use ShutdownHookManager
> ----------------------------------------------------------
>
> Key: MAPREDUCE-4205
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4205
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: mrv2
> Affects Versions: 2.0.0
> Reporter: Alejandro Abdelnur
> Assignee: Alejandro Abdelnur
> Fix For: 2.0.0
>
> Attachments: MAPREDUCE-4205.patch
>
>
> to avoid JVM shutdownhook race conditions, all shutdown hooks should be
> retrofitted to use ShutdownHookManager (HADOOP-8325)
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