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https://issues.apache.org/jira/browse/MAPREDUCE-6075?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14127748#comment-14127748
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Tsuyoshi OZAWA commented on MAPREDUCE-6075:
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[~daryn], thanks for your point, you're right. +1(non-binding) for Jason's
change.
http://docs.oracle.com/javase/7/docs/api/java/io/Closeable.html
> HistoryServerFileSystemStateStore can create zero-length files
> --------------------------------------------------------------
>
> Key: MAPREDUCE-6075
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-6075
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: jobhistoryserver
> Affects Versions: 2.3.0
> Reporter: Jason Lowe
> Assignee: Jason Lowe
> Attachments: MAPREDUCE-6075.patch
>
>
> When the history server state store writes a token file it uses
> IOUtils.cleanup() to close the file which will silently ignore errors. This
> can lead to empty token files in the state store.
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