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https://issues.apache.org/jira/browse/MAPREDUCE-5711?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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zhaoyunjiong resolved MAPREDUCE-5711.
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Resolution: Duplicate
> When JobTracker writing JobHistory to HDFS, it may hung for long time due to
> DataNode error
> -------------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-5711
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5711
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Affects Versions: 1.2.0
> Reporter: zhaoyunjiong
> Assignee: zhaoyunjiong
> Fix For: 1.2.2
>
> Attachments: MAPREDUCE-5711-branch-1.2.patch
>
>
> When writing JobHistory to HDFS, it may takes very long time due to DataNode
> error, unfortunately, it also hold JobTracker lock, so it makes JobTracker
> hung for long time. It happens couple of times on our cluster.
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