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From "Matei Zaharia (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-5154) 4-way deadlock in FairShare scheduler
Date Thu, 19 Feb 2009 21:18:02 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5154?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12675135#action_12675135
] 

Matei Zaharia commented on HADOOP-5154:
---------------------------------------

We can change runningJobs to getRunningJobs. Where do you see scheduler APIs being used without
a lock though?

> 4-way deadlock in FairShare scheduler
> -------------------------------------
>
>                 Key: HADOOP-5154
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5154
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: contrib/fair-share
>            Reporter: Vinod K V
>            Assignee: Matei Zaharia
>            Priority: Blocker
>             Fix For: 0.18.4, 0.20.0
>
>         Attachments: FairSchedulerDeadLock.txt, hadoop-5154-v0.patch, hadoop-5154-v1.patch,
hadoop-5154-v2.patch, hadoop-5154-v3.patch
>
>
> This happened while trying to change the priority of a job from the scheduler servlet.

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