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https://issues.apache.org/jira/browse/HADOOP-11254?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14192225#comment-14192225
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Hitesh Shah commented on HADOOP-11254:
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[~zjshen] Thanks for filing the issue. The context/use-case for this came about
when looking at trying to integrate Tez with Timeline for ACLs. Given that
Timeline today does not support incremental updates to ACLs, to update ACLs one
needs to parse the original ACL string and update it with additional
users/groups. The AccessControlList class being made public would be very
useful for this.
> Promoting AccessControlList to be public
> ----------------------------------------
>
> Key: HADOOP-11254
> URL: https://issues.apache.org/jira/browse/HADOOP-11254
> Project: Hadoop Common
> Issue Type: Bug
> Reporter: Zhijie Shen
> Assignee: Zhijie Shen
>
> The motivation of promoting AccessControlList to be a public API is to
> facilitate the users to programmatically parse or construct an ACL string. A
> typical use case may be the timeline domain, where we have the client lib to
> accept strings complied with ACL string format to define the authorized
> readers/writers. It will be more convenient and less buggy if users can
> compose this string with AccessControlList.
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