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Posted to mapreduce-dev@hadoop.apache.org by "Hemanth Yamijala (JIRA)" <ji...@apache.org> on 2009/07/09 14:33:15 UTC
[jira] Resolved: (MAPREDUCE-734)
java.util.ConcurrentModificationException observed in unreserving slots for
HiRam Jobs
[ https://issues.apache.org/jira/browse/MAPREDUCE-734?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Hemanth Yamijala resolved MAPREDUCE-734.
----------------------------------------
Resolution: Fixed
Hadoop Flags: [Reviewed]
I just committed this. Thanks, Arun and Sreekanth !
> 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-734-1.patch, MAPREDUCE-734-2.patch, MAPREDUCE-734-ydist.patch, 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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