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https://issues.apache.org/jira/browse/MAPREDUCE-1920?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tom White updated MAPREDUCE-1920:
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Attachment: MAPREDUCE-1920.patch
According to a comment in JobTracker#retireJob()
mapreduce.jobtracker.retirejobs is "primarily for testing" (I assume because if
you set it to true on a real installation the JT eventually runs out of
memory?).
I think enabling the job completed store for 1 hour is the most natural
workaround. Here's a patch for enabling it by default. The patch also adds
javadoc to Job#getCounters().
Aaron, does this patch fix the issue for you?
> Job.getCounters() returns null when using a cluster
> ---------------------------------------------------
>
> Key: MAPREDUCE-1920
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1920
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Affects Versions: 0.21.0
> Reporter: Aaron Kimball
> Priority: Critical
> Attachments: MAPREDUCE-1920.patch
>
>
> Calling Job.getCounters() after the job has completed (successfully) returns
> null.
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