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https://issues.apache.org/jira/browse/HBASE-12880?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14283773#comment-14283773
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Andrey Stepachev commented on HBASE-12880:
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Checked more carefully. It seem that offlined SPLIT regions never removed from
region states. Merged regions are the same here.
It seems those regions should be deleted entirely upon Offlined event.
> RegionState in state SPLIT doesn't removed from region states
> -------------------------------------------------------------
>
> Key: HBASE-12880
> URL: https://issues.apache.org/jira/browse/HBASE-12880
> Project: HBase
> Issue Type: Bug
> Components: Region Assignment
> Affects Versions: 2.0.0, 1.1.0
> Reporter: Andrey Stepachev
> Attachments: master-with-split-regions-2-1.jpg
>
>
> During my work on patch HBASE-7332 I stumbled on strange behaviour in
> RegionStates. Split region doesn't removed from regionStates in
> regionOffline() method and RegionState for this region sits in regionStates
> map indefinitely long (until RS rebooted).
> (that is clearly seen in HBASE-7332 by simple creating table and splitting it
> from command line).
> Is that was intended to be so and some chore eventually will remove it from
> regionStates (didn't find with fast code scanning) or here can be resource
> leak?
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