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https://issues.apache.org/jira/browse/HBASE-4739?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13154758#comment-13154758
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stack commented on HBASE-4739:
------------------------------
Is this state misnamed? Is the comment below saying that the master sets
CLOSING state?
{code}
- RS_ZK_REGION_CLOSING (1), // RS is in process of closing a region
+ RS_ZK_REGION_CLOSING (1), // Master adds this region as closing in
ZK
{code}
Why not just print out state rather than do this in log message:
{code}
(state.isPendingClose() ? "pending close " : "closing ") +
{code}
I'm not up on what rest of patch does so can't comment more.
Thanks for digging in Jinchao.
> 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
>
>
> 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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