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: None
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Labels:None
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Target Version/s:
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Hadoop Flags:Reviewed
Description
AssignmentInformation is inefficient and creates lots of garbage that increase gc pressure. It creates 3 hashmaps that each contain only 2 enum-based keys. This requires wrapper node objects, boxing/unboxing of ints, and more expensive lookups than simply using primitive arrays indexed by enum ordinal.