Benoy Antony created HADOOP-10594:
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Summary: Improve Concurrency in Groups
Key: HADOOP-10594
URL: https://issues.apache.org/jira/browse/HADOOP-10594
Project: Hadoop Common
Issue Type: Sub-task
Reporter: Benoy Antony
Assignee: Benoy Antony
Attachments: HADOOP-10594.patch
The static field GROUPS in Groups can be accessed by holding a lock only.
This object is effectively immutable after construction and hence can safely
published using a volatile field. This enables threads to access this GROUPS
object without holding lock
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