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Posted to user@hbase.apache.org by Samir Ahmic <ah...@gmail.com> on 2012/02/12 12:48:55 UTC
Region is in transition, in CLOSING state
Hi,
We are using hbase-0.90.4, and after one of our region servers went down
master reported that one region is in transition, in CLOSING state:
INFO org.apache.hadoop.hbase.master.AssignmentManager: Regions in
transition timed out: access_tokens,,1312452518317.1878726708
state=CLOSING, ts=1328975812113
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
Region server that went down was hosting 8 regions and all
were successfully closed and reassigned to other region servers.
Problem appeared when master tried to rebalance cluster by moving regions
from overloaded servers to less loaded servers:
INFO org.apache.hadoop.hbase.master.LoadBalancer: Calculated a load balance
in 0ms. Moving 3 regions off of 2 overloaded servers onto 2 less loaded
servers
And again 2 regions were successfully moved to less loaded servers
but access_tokens,,1312452518317.1878726708 region stucked in CLOSING
state. We resolved issue by restarting cluster (we had to kill master).
My question is what is best approach in situations like this ? (i have
tried manual unassign from shell did not work)
I have seen few bugs that are addressing similar issue, is this fixed in
hbase-0.92?
Regards
Samir
Re: Region is in transition, in CLOSING state
Posted by Ted Yu <yu...@gmail.com>.
I found the following JIRAs which were fixed in 0.92:
https://issues.apache.org/jira/browse/HBASE-4357
https://issues.apache.org/jira/browse/HBASE-4739
There might be other related JIRAs.
Cheers
On Mon, Feb 13, 2012 at 8:54 AM, Stack <st...@duboce.net> wrote:
> On Sun, Feb 12, 2012 at 3:48 AM, Samir Ahmic <ah...@gmail.com>
> wrote:
> > Hi,
> >
> > We are using hbase-0.90.4, and after one of our region servers went down
> > master reported that one region is in transition, in CLOSING state:
> >
>
> Try restarting your master. 0.90.5 has some bugs fixed around this issue
> too.
> St.Ack
>
Re: Region is in transition, in CLOSING state
Posted by Stack <st...@duboce.net>.
On Sun, Feb 12, 2012 at 3:48 AM, Samir Ahmic <ah...@gmail.com> wrote:
> Hi,
>
> We are using hbase-0.90.4, and after one of our region servers went down
> master reported that one region is in transition, in CLOSING state:
>
Try restarting your master. 0.90.5 has some bugs fixed around this issue too.
St.Ack