JobTracker.finalizeJob inverts lock order and causes potential deadlock
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Key: MAPREDUCE-1499
URL: https://issues.apache.org/jira/browse/MAPREDUCE-1499
Project: Hadoop Map/Reduce
Issue Type: Bug
Components: jobtracker
Affects Versions: 0.20.1, 0.20.2
Reporter: Todd Lipcon
Priority: Critical
This issue was brought up by Matei in MAPREDUCE-1436 as a fairsched bug, but it
turns out it's a JT bug even with the fifo scheduler in unpatched 0.20.2.
JobTracker.finalizeJob locks JT.jobs, JT.taskScheduler, etc, having gotten the
JIP log before the JT lock.
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