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From "Zhihong Yu (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5231) Backport HBASE-3373 (per-table load balancing) to 0.92
Date Tue, 24 Jan 2012 22:10:41 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5231?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13192600#comment-13192600
] 

Zhihong Yu commented on HBASE-5231:
-----------------------------------

bq. I do not know what that means (it seems out of scope for this patch)
The relationship between this feature and balancer sloppiness is definitely within the scope
of discussion.

This is about how we judge whether a cluster is balanced (even without this backport). Since
the existing tests for load balancer pass, there is no regression introduced by this feature.

bq. Isn't this a balancer implementation detail? It would figure how to ask this?
Currently only HRegionInfo is passed to balancer which is static information. Meaning, balancer
lacks statistics about the load on each region.

bq. If it can't, then we need to beef up the balancer interface api so this stuff is passed
in.
Sure. This is to be solved in another JIRA.
                
> Backport HBASE-3373 (per-table load balancing) to 0.92
> ------------------------------------------------------
>
>                 Key: HBASE-5231
>                 URL: https://issues.apache.org/jira/browse/HBASE-5231
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Zhihong Yu
>             Fix For: 0.92.1
>
>         Attachments: 5231-v2.txt, 5231.addendum, 5231.txt
>
>
> This JIRA backports per-table load balancing to 0.90

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