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https://issues.apache.org/jira/browse/HBASE-17427?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15799715#comment-15799715
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Josh Elser commented on HBASE-17427:
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Wow, quite the find, [~tedyu]. Seems to have been introduced way back in
HBASE-3071 (predating ServerName). Looks like it was just unnecessarily
propagated through the years.
+1
> region_mover.rb may move region onto the same server
> ----------------------------------------------------
>
> Key: HBASE-17427
> URL: https://issues.apache.org/jira/browse/HBASE-17427
> Project: HBase
> Issue Type: Bug
> Affects Versions: 1.1.6
> Reporter: Ted Yu
> Assignee: Ted Yu
> Attachments: 17427.branch-1.v1.txt
>
>
> Intermittently, region_mover.rb got stuck waiting for region to be moved onto
> same server:
> {code}
> 2017-01-04 05:37:27,830|INFO|MainThread|machine.py:145 - run()|RuntimeError:
> Region hbase:meta,,1.1588230740 stuck on
> ctr-e88-1483482546062-0245-01-000007.x.com,16020,1483507665481,,
> newserver=ctr-e88-1483482546062-0245-01-000007.x.com,16020,1483507665481
> {code}
> This was due to the following:
> {code}
> # Make a fake servername by appending ','
> metaServer = (mtl.getMetaRegionLocation(zkw).toString() + ",").to_s
> {code}
> Note the extra comma appended to server name (as can be seen in above log)
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