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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-8803) region_mover.rb should move multiple regions at a time
Date Wed, 26 Jun 2013 16:04:20 GMT

    [ https://issues.apache.org/jira/browse/HBASE-8803?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13694044#comment-13694044
] 

stack commented on HBASE-8803:
------------------------------

Can you make this new behavior optional?  Or at least how many to do at a time a parameter
(max concurrent threads moving and restoring)?

Folks want the fast rolling restart for sure -- I know for a fact that a few of your customers
need it (smile) -- but the good thing about the old behavior is that it was minimally disruptive
(though slow) so is good for a cluster that is doing hard serving.

Thanks for working on this important operational issue [~jmspaggi]
                
> region_mover.rb should move multiple regions at a time
> ------------------------------------------------------
>
>                 Key: HBASE-8803
>                 URL: https://issues.apache.org/jira/browse/HBASE-8803
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.98.0, 0.94.8, 0.95.1
>            Reporter: Jean-Marc Spaggiari
>            Assignee: Jean-Marc Spaggiari
>         Attachments: HBASE-8803-v0-trunk.patch
>
>   Original Estimate: 48h
>  Remaining Estimate: 48h
>
> When there is many regions in a cluster, rolling_restart can take hours because region_mover
is moving the regions one by one.

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