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https://issues.apache.org/jira/browse/HBASE-22542?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16857203#comment-16857203
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Duo Zhang commented on HBASE-22542:
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In general, we have a ProcedurePrepareLatch, which is exactly used for being
compatible with old clients. So this should an issue for 2.3.0+, not 2.2.0?
> Remove grant/revoke method from 2.2.0 Admin/AsyncAdmin interface
> -----------------------------------------------------------------
>
> Key: HBASE-22542
> URL: https://issues.apache.org/jira/browse/HBASE-22542
> Project: HBase
> Issue Type: Sub-task
> Reporter: Guanghao Zhang
> Priority: Blocker
>
> If a 2.2.0 client access the new version master which has ACL procedure v2,
> the grant/revoke method will return a procedure id directly. But the ACL
> procedure is not finished. So we need to remove these interface from 2.2.0
> for compatiblity. Another solution is to wait the ACL procedure v2 feature
> merge to 2.2.0...
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