Race condition in JobTracker updating the task tracker's status while declaring
it lost
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Key: HADOOP-600
URL: http://issues.apache.org/jira/browse/HADOOP-600
Project: Hadoop
Issue Type: Bug
Components: mapred
Affects Versions: 0.7.1
Reporter: Owen O'Malley
Assigned To: Owen O'Malley
Fix For: 0.8.0
There was a case where the JobTracker lost track of a set of tasks that were on
a task tracker. It appears to be a race condition because the ExpireTrackers
thread doesn't lock the JobTracker while updating the state. The fix would be
to build a list of dead task trackers and then lock the job tracker while
updating their status.
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