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https://issues.apache.org/jira/browse/MAPREDUCE-1920?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12886672#action_12886672
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Amareshwari Sriramadasu commented on MAPREDUCE-1920:
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I was thinking whether we should disable retited jobs cache, if we enable
completed job store by default, to remove duplicate data storage. But, now i
feel we can enable both, because retired job cache is served from memory,
whereas completed job store is served from file system; and clients are served
from retired jobs cache first, if not found in the cache, then they are served
from completed job store.
Attached patch looks fine to me.
> 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
> Assignee: Tom White
> Priority: Critical
> Attachments: MAPREDUCE-1920.patch
>
>
> Calling Job.getCounters() after the job has completed (successfully) returns
> null.
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