Ahmed Hussein created HADOOP-17485:
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Summary: port UGI#getGroupsSet optimizations into 2.10
Key: HADOOP-17485
URL: https://issues.apache.org/jira/browse/HADOOP-17485
Project: Hadoop Common
Issue Type: Bug
Reporter: Ahmed Hussein
Assignee: Ahmed Hussein
HADOOP-17079 introduced an optimization adding a UGI#getGroupsSet and use
Set#contains() instead of List#contains() to speed up large group look up while
minimize List->Set conversions in Groups#getGroups() call.
This ticket is to port the changes into branch-2.10.
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