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https://issues.apache.org/jira/browse/MAPREDUCE-786?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sharad Agarwal updated MAPREDUCE-786:
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Component/s: jobtracker
> Jobtracker history should be done written aysnchronously to the filesystem
> --------------------------------------------------------------------------
>
> Key: MAPREDUCE-786
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-786
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: jobtracker
> Reporter: Sharad Agarwal
>
> Jobtracker lock is held while writing the history events. This makes the
> jobtracker slow on flushes, especially when history is written to HDFS.
> History events should be written asynchronously to avoid this problem.
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