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Posted to issues@hbase.apache.org by "stack (JIRA)" <ji...@apache.org> on 2011/03/25 00:34:05 UTC

[jira] [Commented] (HBASE-3647) Distinguish read and write request count in region

    [ https://issues.apache.org/jira/browse/HBASE-3647?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13011008#comment-13011008 ] 

stack commented on HBASE-3647:
------------------------------

+1 on patch.  Looks good Ted.  Need to make sure though that we up the version on the Interface since the serialization of HSL has been changed by this patch (Unfortunately, HSL is not versioned so we can't have it migrate itself if it gets wrong version).

> 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: 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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