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From "Elliott Clark (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5959) Add other load balancers
Date Tue, 15 May 2012 22:29:09 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5959?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13276291#comment-13276291
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Elliott Clark commented on HBASE-5959:
--------------------------------------

The new balancer doesn't have that logging. So there's no timing in the logs.  I can add that
if there are people that need that info in that format.

No since we iterate through all servers there is no given amount of time.  It could be that
an iteration could:

* hit a cold hfile location cache
* choose not to move regions.
* or do a move.

All of those things will take a different amount of time; so we can't really estimate the
amount of time an iteration will take.  Hence we would have to go back to the timer every
iteration through.  That would be very costly.
                
> Add other load balancers
> ------------------------
>
>                 Key: HBASE-5959
>                 URL: https://issues.apache.org/jira/browse/HBASE-5959
>             Project: HBase
>          Issue Type: New Feature
>          Components: master
>    Affects Versions: 0.96.0
>            Reporter: Elliott Clark
>            Assignee: Elliott Clark
>         Attachments: HBASE-5959-0.patch, HBASE-5959-1.patch, HBASE-5959-2.patch, HBASE-5959-3.patch,
HBASE-5959-6.patch, HBASE-5959-7.patch, HBASE-5959.D3189.1.patch, HBASE-5959.D3189.2.patch,
HBASE-5959.D3189.3.patch, HBASE-5959.D3189.4.patch
>
>
> Now that balancers are pluggable we should give some options.b

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