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https://issues.apache.org/jira/browse/MAPREDUCE-1699?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chris Douglas updated MAPREDUCE-1699:
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    Fix Version/s: 0.20.3
                       (was: 0.22.0)

It would be nice if this were fixed in the 0.20 branch

> JobHistory shouldn't be disabled for any reason
> -----------------------------------------------
>
>                 Key: MAPREDUCE-1699
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1699
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: jobtracker
>    Affects Versions: 0.20.2
>            Reporter: Arun C Murthy
>             Fix For: 0.20.3
>
>
> Recently we have had issues with JobTracker silently disabling job-history 
> and starting to keep all completed jobs in memory. This leads to OOM on the 
> JobTracker. We should never do this.

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