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https://issues.apache.org/jira/browse/HBASE-13627?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15263610#comment-15263610
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Sreeram Venkatasubramanian commented on HBASE-13627:
----------------------------------------------------
To summarize, I think the warnings are harmless. Regionservers are terminated
asynchronously. The code checks for and stops active regionservers and keeps
repeating the same. It is possible a given region server takes more time to
close and thats the reason we get the warning. [~ndimiduk], ok to close the
issue ?
> Terminating RS results in redundant CLOSE RPC
> ---------------------------------------------
>
> Key: HBASE-13627
> URL: https://issues.apache.org/jira/browse/HBASE-13627
> Project: HBase
> Issue Type: Bug
> Components: master
> Affects Versions: 1.1.0
> Reporter: Nick Dimiduk
> Assignee: Sreeram Venkatasubramanian
> Priority: Minor
> Labels: beginner, beginners
> Fix For: 2.0.0, 1.3.0, 1.1.5, 1.2.2
>
>
> Noticed while testing the 1.1.0RC0 bits. It seems we're issuing a redundant
> close RPC during shutdown. This results in a logging warning for each region.
> {noformat}
> 2015-05-06 00:07:19,214 INFO [RS:0;ndimiduk-apache-1-1-dist-6:56371]
> regionserver.HRegionServer: Received CLOSE for the region:
> 19cbe4fe2fe5335e7aace05e10e36ede, which we are already trying to CLOSE, but
> not completed yet
> 2015-05-06 00:07:19,214 WARN [RS:0;ndimiduk-apache-1-1-dist-6:56371]
> regionserver.HRegionServer: Failed to close
> cluster_test,66666666,1430869443384.19cbe4fe2fe5335e7aace05e10e36ede. -
> ignoring and continuing
> org.apache.hadoop.hbase.regionserver.RegionAlreadyInTransitionException: The
> region 19cbe4fe2fe5335e7aace05e10e36ede was already closing. New CLOSE
> request is ignored.
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer.closeRegion(HRegionServer.java:2769)
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer.closeRegionIgnoreErrors(HRegionServer.java:2695)
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer.closeUserRegions(HRegionServer.java:2327)
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer.run(HRegionServer.java:937)
> at java.lang.Thread.run(Thread.java:745)
> {noformat}
> 1. launch a standalone cluster from tgz (./bin/start-hbase.sh)
> 2. load some data (ie, run bin/hbase ltt)
> 3. terminate cluster (./bin/stop-hbase.sh)
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