Details
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Bug
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Status: Closed
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Major
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Resolution: Fixed
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None
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Description
For a cluster with lot of RUNNING jobs, this overwhelms RM causing lot of blocked threads as it does ACL check on each application before applying the filter tag and that is inside a synchronized block. Hadoop team is looking at doing the filtering first outside synchronized block to limit the number of applications for which ACL check needs to be done reducing time spent in synchronized block.