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https://issues.apache.org/jira/browse/HBASE-16769?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16163648#comment-16163648
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Josh Elser commented on HBASE-16769:
------------------------------------

bq. One req is supposed to have only one of these 3 settings right?

I think at the protocol level, we allow any of the "limits" to be applied in 
one RPC/protobuf. However, at the Java API level, we don't expose that level 
because this is such an infrequent operation.

bq. Either removal of existing Quota or additon(And update is also done as an 
addition?)?

Yup, addition and modify are treated the same.

bq. I was not so sure abt these aspects of Quota feature and its impl, did not 
go with the change on my own.

Ok. I can't imagine anyone feels strongly here, otherwise we would have had 
this question and discussion before :). I'll leave the implementation as is and 
update the javadoc as a part of my efforts.

> Deprecate/remove PB references from MasterObserver and RegionServerObserver
> ---------------------------------------------------------------------------
>
>                 Key: HBASE-16769
>                 URL: https://issues.apache.org/jira/browse/HBASE-16769
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Anoop Sam John
>            Assignee: Anoop Sam John
>            Priority: Blocker
>             Fix For: 2.0.0-alpha-4
>
>         Attachments: HBASE-16769.patch
>
>
> This is effectively a sub-task for HBASE-15174.
> CP Methods
> MasterObserver
>       preListSnapshot
>       postListSnapshot
>       preSnapshot
>       postSnapshot
>       preCloneSnapshot
>       postCloneSnapshot
>       preRestoreSnapshot
>       postRestoreSnapshot
>       preDeleteSnapshot
>       postDeleteSnapshot
>       
>       preSetUserQuota
>       postSetUserQuota
>       preSetUserQuota
>       postSetUserQuota
>       preSetUserQuota
>       postSetUserQuota
>       preSetTableQuota
>       postSetTableQuota
>       preSetNamespaceQuota
>       postSetNamespaceQuota
>       
> RegionServerObserver
>       preReplicateLogEntries
>       postReplicateLogEntries



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