[jira] [Commented] (HBASE-6666) Allow RegionObserver to access other regions on the same server.

["Anoop Sam John (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-6666?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13540864#comment-13540864 ] 

Anoop Sam John commented on HBASE-6666:
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Within a RegionObserver we can access any other region in that RS via the HRegionServer#getOnlineRegion ??
e.getEnvironment().getRegionServerServices().getOnlineRegions(tableName)

Or you mean some thing else here?
                
> 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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