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Type:
Sub-task
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Status: Closed
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Priority:
Critical
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Resolution: Fixed
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Affects Version/s: 0.23.1
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Fix Version/s: 0.23.1
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Component/s: mr-am, mrv2, performance
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Labels:None
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Hadoop Flags:Reviewed
This got added via MAPREDUCE-3274. We really don't need the lock if we just implement what I mentioned on that ticket here.
This has performance implications on MR AM with lots of tasks.