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https://issues.apache.org/jira/browse/HBASE-1461?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12904928#action_12904928
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Jonathan Gray commented on HBASE-1461:
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Now that master rewrite is done, I'm unclear of the scope of this jira. Is
this fixed? HMaster gets confirmation of open via zk, should only be closed if
the master asks him to be closed or if RS dies, which is handled in server
expire.
> region assignment can become stale and master doesnt fix it
> -----------------------------------------------------------
>
> Key: HBASE-1461
> URL: https://issues.apache.org/jira/browse/HBASE-1461
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.20.0
> Reporter: ryan rawson
>
> I have been playing with ZK recovery and other crash scenarios. There is a
> very rare but potential bug where a region can be assigned to be open on an
> existing regionserver, but the regionserver itself doesn't have the region
> open.
> The HMaster should also check the opposite of what it does - make sure that
> regions assigned to server X are actually _open_ on that server.
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