Master dying while going to close a region can leave it in transition forever
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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
Priority: Minor
Fix For: 0.92.0, 0.94.0, 0.90.5
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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