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From "Abhishek Singh Chouhan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-14749) Make changes to region_mover.rb to use RegionMover Java tool
Date Sat, 07 Nov 2015 04:26:11 GMT

    [ https://issues.apache.org/jira/browse/HBASE-14749?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14995024#comment-14995024
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Abhishek Singh Chouhan commented on HBASE-14749:
------------------------------------------------

[~stack] When trying to move regions to master, the move is simply ignored. 

DEBUG [B.defaultRpcServer.handler=0,queue=0,port=55490] master.HMaster(1422): Skipping move
of region testRegionMover,m,1446869600631.81c5fbb05ca7c972a32b6cd858168cd6. to avoid unnecessary
region moving later by load balancer, because it should not be on master

To skip this situation, added the stripMaster method to remove master from coming in list
of move targets. However if the master is not there in the list simply log the warning like
the one you got (maybe i should remove "Error removing master..") and go on to moving regions.
In your case too the move should have succeeded, just that this warning is also logged if
master was not there in the list of RS. This won't cause any failures. I din't try on a branch-1
cluster but i tested out on a cluster of VMs running on 2.0.

> Make changes to region_mover.rb to use RegionMover Java tool
> ------------------------------------------------------------
>
>                 Key: HBASE-14749
>                 URL: https://issues.apache.org/jira/browse/HBASE-14749
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Abhishek Singh Chouhan
>            Assignee: Abhishek Singh Chouhan
>             Fix For: 2.0.0
>
>         Attachments: HBASE-14749.patch, HBASE-14749.patch
>
>
> With HBASE-13014 in, we can now replace the ruby script such that it invokes the Java
Tool. Also expose timeout and no-ack mode which were added.



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