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https://issues.apache.org/jira/browse/HADOOP-5154?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matei Zaharia updated HADOOP-5154:
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Attachment: hadoop-5154-v1.patch
Here's a new patch taking into account Tom's comments. Tom, the reason I had
moved the update outside of the loop was because I thought I might want to
acquire a lock on the JobTracker in update later, which could cause a deadlock
with assignTasks (which locks the JT and then the scheduler), but now I think
that this is not necessary so there's no reason to do it.
> 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, hadoop-5154-v0.patch,
> hadoop-5154-v1.patch
>
>
> This happened while trying to change the priority of a job from the scheduler
> servlet.
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