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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-3647) Distinguish read and write request count in region
Date Fri, 01 Apr 2011 23:17:05 GMT

     [ https://issues.apache.org/jira/browse/HBASE-3647?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

stack updated HBASE-3647:
-------------------------

      Resolution: Fixed
    Hadoop Flags: [Reviewed]
          Status: Resolved  (was: Patch Available)

Committed to TRUNK.  My dementia on versions above should be ignored.  We've already upped
our rpc version across the board because of CoProcessors change.  This change goes in under
that same version change.  Thanks for the patch Ted and you did us a service Versioning the
HSI and HSL classes.

> Distinguish read and write request count in region
> --------------------------------------------------
>
>                 Key: HBASE-3647
>                 URL: https://issues.apache.org/jira/browse/HBASE-3647
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Ted Yu
>            Assignee: Ted Yu
>             Fix For: 0.92.0
>
>         Attachments: 3647-versioned.txt, hbase-3647.txt
>
>
> Distinguishing read and write request counts, on top of HBASE-3507, would benefit load
balancer.
> The action for balancing read vs. write load should be different. For read load, region
movement should be low (to keep scanner happy). For write load, region movement is allowed.
> Now that we have cheap(er) counters, it should not be too burdensome keeping up the extra
count.

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