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From "ramkrishna.s.vasudevan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5914) Using bulk assign regions in the process of ServerShutdownHandler
Date Wed, 02 May 2012 15:04:50 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5914?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13266620#comment-13266620

ramkrishna.s.vasudevan commented on HBASE-5914:

Idea is good.
But do we need 
boolean waitUntilNoRegionsInTransition(final long timeout)
such wait mechanisms? Also can we have a configuration like how we have in the master start
up to ensure whether to use roundRobin or not.
Because if i have a custom load balancer i will get a call back in this case for round robin.
 May be we can avoid that if we have the configuration? What do you feel Chunhui? 
> Using bulk assign regions in the process of ServerShutdownHandler
> -----------------------------------------------------------------
>                 Key: HBASE-5914
>                 URL: https://issues.apache.org/jira/browse/HBASE-5914
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: chunhui shen
>            Assignee: chunhui shen
>         Attachments: HBASE-5914.patch
> In the process of ServerShutdownHandler, we currently assign regions singly.
> In the large cluster, one regionserver always carried many regions, this action is  quite
> What about using bulk assign regions like cluster start up.
> In current logic,  if we failed assigning many regions to one destination server, we
will wait unitl timeout, 
> however in the process of ServerShutdownHandler, we should retry it to another server.

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