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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HBASE-3507) requests count per HRegion and rebalance command
Date Fri, 11 Mar 2011 06:51:01 GMT

     [ https://issues.apache.org/jira/browse/HBASE-3507?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

stack updated HBASE-3507:
-------------------------

    Attachment: hbase-3507-v4.txt

Here is a version of the patch that has the HRegion#requestsCounter package private so it
can be set by the SplitTransaction.  It removes the passing of requests count into the HRegion
constructor.

There seem to a few issues w/ the patch though.  First, I see that we only increment the new
HRegion#requestsCounter on region open -- is that right?  Second, we're already doing counts
up in HRegionServer.  Is the intent to count twice but this time at the HRegions' scope?

> requests count per HRegion and rebalance command
> ------------------------------------------------
>
>                 Key: HBASE-3507
>                 URL: https://issues.apache.org/jira/browse/HBASE-3507
>             Project: HBase
>          Issue Type: Improvement
>          Components: performance, regionserver
>            Reporter: Sebastian Bauer
>            Assignee: Ted Yu
>            Priority: Trivial
>         Attachments: hbase-3507-split-merge.txt, hbase-3507-splitTxn.txt, hbase-3507-v4.txt,
hbase-requestsCount-2.patch, hbase-requestsCount-v2.patch, hbase-requestsCount.patch
>
>
> Path-1 add another mertic for HRegion to count request made to region.
> Path-2 add another command to hbase shell to grab all regions, sort by requests from
Path-1 and move in round-robin algorithm to servers

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