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https://issues.apache.org/jira/browse/HBASE-12426?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15102527#comment-15102527
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Nishanth Shajahan commented on HBASE-12426:
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[~daisuke.kobayashi] yes i had to but I was more worried about manually
deleting the WAL entries.Did that since it was a play around data.
> Dead Region Servers after Decommissioning
> ------------------------------------------
>
> Key: HBASE-12426
> URL: https://issues.apache.org/jira/browse/HBASE-12426
> Project: HBase
> Issue Type: Bug
> Components: Balancer
> Affects Versions: 0.96.1.1
> Environment: RHEL 6.5
> Reporter: Nishanth Shajahan
> Priority: Minor
>
> I initially had a set of 5 region servers which had a single table which
> was pre split into 30 regions and was evenly distributed to all the regions
> with data.I then went ahead and removed/decommissioned a coupe of region
> servers,so in the end I have 3 region servers.Ran hbase hbck and verified
> there were 0 inconsistencies.However when 'status' command is issued is from
> hbase shell it shows a dead region server and the same is displayed in
> master UI as well.Fail over of hbase master did not fix the issue.On
> investigation we could see some WAL entries which was still pointing to the
> old region server.
> /hbase/WALs/myserver,60020,1406745344969-splitting
> After removing these orphan entries from hdfs and master failover the dead
> region servers went away.I wonder if this could have caused any replication
> issues in the cluster.
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