[ http://issues.apache.org/jira/browse/HADOOP-316?page=all ]
Owen O'Malley updated HADOOP-316:
---------------------------------
Attachment: fix-expire-task-deadlock.patch
Make sure that the JobTracker is locked first.
> job tracker has a deadlock
> --------------------------
>
> Key: HADOOP-316
> URL: http://issues.apache.org/jira/browse/HADOOP-316
> Project: Hadoop
> Type: Bug
> Components: mapred
> Versions: 0.3.2
> Reporter: Owen O'Malley
> Assignee: Owen O'Malley
> Fix For: 0.4.0
> Attachments: fix-expire-task-deadlock.patch
>
> The JobTracker has a deadlock in the ExpireLaunchingTasks stuff.
> In particular, it locks the JobTracker and launchingTasks inconsistently.
> This deadlocks has been observed in the wild and causes the JobTracker to
> stop responding to rpc and http (other than the root page).
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