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https://issues.apache.org/jira/browse/HBASE-6666?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13548790#comment-13548790
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Andrew Purtell commented on HBASE-6666:
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[~lhofhansl] What should we do with this issue? Add detail? Close it?
                
> Allow RegionObserver to access other regions on the same server.
> ----------------------------------------------------------------
>
>                 Key: HBASE-6666
>                 URL: https://issues.apache.org/jira/browse/HBASE-6666
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Lars Hofhansl
>
> This is an idea I had some time back. It would be nice if a RegionObserver 
> (or Endpoint) could get access to all other regions on the same RegionServer 
> to efficiently make updates to those regions as well (instead of going 
> through the standard HTable path).
> Together with a smart region placement strategy this can lead to much better 
> performance for some coprocessor tasks.
> Maybe it could be abstracted in a special HTable implementation.

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