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https://issues.apache.org/jira/browse/HDFS-5620?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Work on HDFS-5620 started by Chris Nauroth.
> NameNode: implement Global ACL Set as a memory optimization.
> ------------------------------------------------------------
>
> Key: HDFS-5620
> URL: https://issues.apache.org/jira/browse/HDFS-5620
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: namenode
> Affects Versions: HDFS ACLs (HDFS-4685)
> Reporter: Chris Nauroth
> Assignee: Chris Nauroth
> Attachments: HDFS-5620.1.patch
>
>
> The {{AclManager}} can maintain a Global ACL Set to store all distinct ACLs
> in use by the file system. All inodes that have the same ACL entries can
> share the same ACL instance.
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