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https://issues.apache.org/jira/browse/MAPREDUCE-1354?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12796483#action_12796483
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Devaraj Das commented on MAPREDUCE-1354:
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bq. We should see if we can avoid taking the lock altogether.
This may require major changes.. Maybe we should just make the locking more
granular within the method for the time being.
> Refactor JobTracker.submitJob to not lock the JobTracker during the HDFS
> accesses
> ---------------------------------------------------------------------------------
>
> Key: MAPREDUCE-1354
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1354
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Reporter: Devaraj Das
>
> It'd be nice to have the JobTracker object not be locked while accessing the
> HDFS for reading the jobconf file and while writing the jobinfo file in the
> submitJob method. We should see if we can avoid taking the lock altogether.
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