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From "Anoop Sam John (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-6666) Allow RegionObserver to access other regions on the same server.
Date Sat, 29 Dec 2012 11:34:12 GMT

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

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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