Gergely Pollak created YARN-10279:
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Summary: Avoid unnecessary QueueMappingEntity creations
Key: YARN-10279
URL: https://issues.apache.org/jira/browse/YARN-10279
Project: Hadoop YARN
Issue Type: Task
Reporter: Gergely Pollak
In CS UserGroupMappingPlacementRule and AppNameMappingPlacementRule classes we
create new instances of QueueMappingEntity class. In some cases we simply copy
the already received class, so we just duplicate it, which is unnecessary since
the class is immutable.
This is just a minor improvement, probably doesn't have much impact, but still
puts some unnecessary load on GC.
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