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https://issues.apache.org/jira/browse/HDFS-5899?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13895491#comment-13895491
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Tsz Wo (Nicholas), SZE commented on HDFS-5899:
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> ... because the AclStorage methods only get called while holding the
> namesystem write lock. ...
This is a very good point. Please feel free to commit the patch. We may think
about how to improve the code later on.
> Add configuration flag to disable/enable support for ACLs.
> ----------------------------------------------------------
>
> Key: HDFS-5899
> URL: https://issues.apache.org/jira/browse/HDFS-5899
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: namenode
> Affects Versions: HDFS ACLs (HDFS-4685)
> Reporter: Chris Nauroth
> Assignee: Chris Nauroth
> Attachments: HDFS-5899.1.patch, HDFS-5899.2.patch
>
>
> Add a new configuration property that allows administrators to toggle support
> for HDFS ACLs on/off. By default, the flag will be off. This is a
> conservative choice, and administrators interested in using ACLs can enable
> it explicitly.
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