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https://issues.apache.org/jira/browse/HBASE-4739?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13155600#comment-13155600
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gaojinchao commented on HBASE-4739:
-----------------------------------
@Ted
It seems 0.90.5 logic is ok.
1. if RS_ZK_REGION_CLOSING is created, It says that RS has received the RPC
2. When RIT is timeout, There is two case, one RS is slow, in this case we
don't need send RPC again.
another case, closing the region has exception, we send rpc can't solve the
problem, it may also fail.
So I think we don't need fix anything.
> Master dying while going to close a region can leave it in transition forever
> -----------------------------------------------------------------------------
>
> Key: HBASE-4739
> URL: https://issues.apache.org/jira/browse/HBASE-4739
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.90.4
> Reporter: Jean-Daniel Cryans
> Assignee: gaojinchao
> Priority: Minor
> Fix For: 0.92.0, 0.94.0, 0.90.5
>
> Attachments: 4739_trial2.patch, 4739_trialV3.patch,
> HBASE-4739_Trunk.patch, HBASE-4739_Trunk_V2.patch, HBASE-4739_trail5.patch,
> HBASE-4739_trial.patch, HBASE-4739_trial6.patch
>
>
> I saw this in the aftermath of HBASE-4729 on a 0.92 refreshed yesterday, when
> the master died it had just created the RIT znode for a region but didn't
> tell the RS to close it yet.
> When the master restarted it saw the znode and started printing this:
> {quote}
> 2011-11-03 00:02:49,130 INFO
> org.apache.hadoop.hbase.master.AssignmentManager: Regions in transition timed
> out: TestTable,0007560564,1320253568406.f76899564cabe7e9857c3aeb526ec9dc.
> state=CLOSING, ts=1320253605285, server=sv4r11s38,62003,1320195046948
> 2011-11-03 00:02:49,130 INFO
> org.apache.hadoop.hbase.master.AssignmentManager: Region has been CLOSING for
> too long, this should eventually complete or the server will expire, doing
> nothing
> {quote}
> It's never going to happen, and it's blocking balancing.
> I'm marking this as minor since I believe this situation is pretty rare
> unless you hit other bugs while trying out stuff to root bugs out.
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