Details
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Type:
Sub-task
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Status: Resolved
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Priority:
Major
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Resolution: Fixed
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Affects Version/s: 2.8.0
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Fix Version/s: 2.9.0, 3.0.0-alpha4, 2.8.2
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Component/s: resourcemanager
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Labels:None
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Target Version/s:
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Hadoop Flags:Reviewed
Description
Labels are managed via a hash that is protected with a read lock. The lock acquire and release are each just as expensive as the hash lookup itself - resulting in a 3X slowdown.