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From "Vinod K V (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-5154) 4-way deadlock in FairShare scheduler
Date Mon, 02 Feb 2009 07:49:59 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5154?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12669520#action_12669520
] 

Vinod K V commented on HADOOP-5154:
-----------------------------------

It's actually a 2-way deadlock. The JT UI and FairScheduler.assignTasks also got locked up
while trying to obtain the lock on JT object.

> 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
>         Attachments: FairSchedulerDeadLock.txt
>
>
> This happened while trying to change the priority of a job from the scheduler servlet.

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