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From Ted Yu <yuzhih...@gmail.com>
Subject Re: Stuck closing region / region is flushing
Date Sat, 14 Mar 2015 20:43:02 GMT
bq. flush the region manually using shell?

I doubt that would work - you can give it a try.
Please take jstack of region server in case you need to restart the server.

BTW HBASE-10499 didn't go into 0.94 (maybe it should have). Please consider
upgrading.

Cheers

On Sat, Mar 14, 2015 at 1:30 PM, Kristoffer Sjögren <stoffe@gmail.com>
wrote:

> Hi Ted
>
> Sorry I forgot to mention, hbase-0.94.6 cdh 4.4.
>
> Yeah, it was a pretty write intensive scenario that I think triggered it
> (importing a lot of datapoints into opentsdb).
>
> Do I flush the region manually using shell?
>
> Cheers,
> -Kristoffer
>
> On Sat, Mar 14, 2015 at 9:22 PM, Ted Yu <yuzhihong@gmail.com> wrote:
>
> > Which release of HBase are you using ?
> >
> > I wonder if your cluster was hit with HBASE-10499.
> >
> > Cheers
> >
> > On Sat, Mar 14, 2015 at 1:13 PM, Kristoffer Sjögren <stoffe@gmail.com>
> > wrote:
> >
> > > Hi
> > >
> > > It seems one of our region servers has been stuck closing a region for
> > > almost 22 hours. Puts or gets eventually fail with an exception [1].
> > >
> > > Is there any safe way to release the region like restarting the region
> > > server?
> > >
> > > Cheers,
> > > -Kristoffer
> > >
> > >
> > > [1]
> > >
> > > 2015-03-14 21:02:24,316 INFO
> > org.apache.hadoop.hbase.regionserver.HRegion:
> > > Failed to unblock updates for region
> > > tsdb,\x00\x00\x9ETU\xAC@
> > >
> >
> \x00\x00\x01\x00\x00\xAD\x00\x00\x05\x00\x00\xA7,1426282871862.4512f92b3d81e9142542d3b458223b63.
> > > 'IPC Server handler 9 on 60020' in 60000ms. The region is still busy.
> > > 2015-03-14 21:02:24,316 ERROR
> > > org.apache.hadoop.hbase.regionserver.HRegionServer:
> > > org.apache.hadoop.hbase.RegionTooBusyException: region is flushing
> > > at
> > >
> > >
> >
> org.apache.hadoop.hbase.regionserver.HRegion.checkResources(HRegion.java:2731)
> > > at org.apache.hadoop.hbase.regionserver.HRegion.put(HRegion.java:2002)
> > > at
> > >
> > >
> >
> org.apache.hadoop.hbase.regionserver.HRegionServer.put(HRegionServer.java:2114)
> > > at sun.reflect.GeneratedMethodAccessor109.invoke(Unknown Source)
> > > at
> > >
> > >
> >
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> > > at java.lang.reflect.Method.invoke(Method.java:606)
> > > at
> > >
> > >
> >
> org.apache.hadoop.hbase.ipc.WritableRpcEngine$Server.call(WritableRpcEngine.java:320)
> > > at
> > >
> >
> org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:1428)
> > >
> >
>

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