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https://issues.apache.org/jira/browse/MAPREDUCE-734?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Arun C Murthy updated MAPREDUCE-734:
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Affects Version/s: 0.21.0
Fix Version/s: 0.21.0
> java.util.ConcurrentModificationException observed in unreserving slots for
> HiRam Jobs
> --------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-734
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-734
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: contrib/capacity-sched
> Affects Versions: 0.21.0
> Reporter: Karam Singh
> Assignee: Arun C Murthy
> Fix For: 0.21.0
>
> Attachments: MAPREDUCE-734_0_20090708.patch,
> MAPREDUCE-734_0_20090708_yhadoop20.patch
>
>
> Ran jobs out which 3 were HiRAM, the job were not removed from scheduler
> queue even after they successfully completed
> hadoop queue -info queue -showJobs displays somwthing like -:
> job_200907080724_0031 2 1247059146868 username NORMAL 0 running
> map tasks using 0 map slots. 0 additional slots reserved. 0 running reduce
> tasks using 0 reduce slots. 60 additional slots reserved.
> job_200907080724_0030 2 1247059146972 username NORMAL 0 running
> map tasks using 0 map slots. 0 additional slots reserved. 0 running reduce
> tasks using 0 reduce slots. 60 additional slots reserved.
> But it does not block anything, but seems like zombie process of system
> Jobtracker log show java.util.ConcurrentModificationException
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