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Posted to mapreduce-issues@hadoop.apache.org by "Scott Chen (JIRA)" <ji...@apache.org> on 2010/07/28 19:52:38 UTC
[jira] Updated: (MAPREDUCE-1974) FairScheduler can preempt the same
task many times
[ https://issues.apache.org/jira/browse/MAPREDUCE-1974?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Scott Chen updated MAPREDUCE-1974:
----------------------------------
Affects Version/s: 0.20.1
Component/s: contrib/fair-share
> FairScheduler can preempt the same task many times
> --------------------------------------------------
>
> Key: MAPREDUCE-1974
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1974
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: contrib/fair-share
> Affects Versions: 0.20.1
> Reporter: Scott Chen
> Assignee: Scott Chen
>
> In FairScheduler.preemptTasks(), tasks are collected from JobInProgress.runningMapCache.
> But tasks repeat multiple times in JobInProgress.runningMapCache (on rack, node and cluster).
> This makes FairScheduler preempt the same task many times.
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