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From stack <st...@duboce.net>
Subject Re: NSRE due to duplicate assignment (MSG_REGION_CLOSE_WITHOUT_REPORT)
Date Sun, 19 Jul 2009 22:16:46 GMT
Then you would have missed this fix where edits to .META. were frozen out
making it double-assignment more likely:

------------------------------------------------------------------------
r794867 | stack | 2009-07-16 14:29:05 -0700 (Thu, 16 Jul 2009) | 1 line

HBASE-1664 Disable 1058 on catalog tables

Thanks for your patience and for living on the edge/TRUNK.

St.Ack
P.S. Would be interested in your master log nonetheless



On Sun, Jul 19, 2009 at 3:07 PM, Haijun Cao <haijuncao@ymail.com> wrote:

>
> Yes, as recent as: Jul 16 13:48
>
>
> Haijun
>
>
> ________________________________
> From: stack <stack@duboce.net>
> To: hbase-user@hadoop.apache.org
> Sent: Sunday, July 19, 2009 2:35:48 PM
> Subject: Re: NSRE due to duplicate assignment
> (MSG_REGION_CLOSE_WITHOUT_REPORT)
>
> Are you on a recent TRUNK?  A few fixes went in end of last week that help
> with this.
>
>
> On Sun, Jul 19, 2009 at 1:24 PM, Haijun Cao <haijuncao@ymail.com> wrote:
>
> >
> > I checked the .META. for the region, it indeed has two
> >  assignment records.
> >
> > I am wondering if this is a bug? How I can recover the region from this?
> (I
> > searched archieve using duplicate assignment, got no result).
> >
>
> May I see the master log from around the double assignment (if you were
> running DEBUG).
>
> Yeah, its a bug.
>
> Do as Ryan suggested or in shell do "close_region REGIONNAME".  It'll be
> reassigned and then reopened elsewhere.
>
> St.Ack
>
>
>
> >
> > I am on hbase truck, hadoop-0.20.0 (plus 4681), zookeeper-3.2, test env
> has
> >  3 machine (8core, 16G, 4x750G SATA disk, raid 0). DataNode
> xreciver=4096,
> > handler=50, ulimit 32768 (followed hbase-0.20.0-alpha
> overview_description
> > religiously)
> >
> >
> > Thanks in advance.
> >
> > Haijun
> >
> >
> >
> > 1. Exception while scanning:
> >
> > org.apache.hadoop.hbase.client.RetriesExhaustedException: Trying to
> contact
> > region server 10.10.30.106:60020 for region
> > TestTable,0089182778,1247979707102, row '0089182778', but failed after 10
> > attempts.
> > Exceptions:
> > org.apache.hadoop.hbase.NotServingRegionException:
> > org.apache.hadoop.hbase.NotServingRegionException:
> > TestTable,0089182778,1247979707102
> >        at
> >
> >
>  org.apache.hadoop.hbase.regionserver.HRegionServer.getRegion(HRegionServer.java:2230)
> >        at
> >
> >
>  org.apache.hadoop.hbase.regionserver.HRegionServer.openScanner(HRegionServer.java:1848)
> >        at sun.reflect.GeneratedMethodAccessor13.invoke(Unknown Source)
> >        at
> >
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> >        at java.lang.reflect.Method.invoke(Method.java:597)
> >        at
> > org.apache.hadoop.hbase.ipc.HBaseRPC$Server.call(HBaseRPC.java:643)
> >        at
> > org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:913)
> >
> > 2. duplicate assignments for the region in .META.
> >
> > Timestamp
> > Event
> > Description
> > Sat, 18 Jul 2009 22:05:00 open Region opened on server: snv-it-lin-012
> >
> > Sat, 18 Jul 2009 22:04:57 assignment Region assigned to server
> > snv-it-lin-012,60020,1247965643087
> > Sat, 18 Jul 2009 22:04:54 assignment Region assigned to server
> > snv-it-lin-012,60020,1247965643087
> > Sat, 18 Jul 2009 22:04:49 split Region split
> > from:TestTable,0089182778,1247904130413
> >
> > 3. Region server log file:
> >
> > [haijun@snv-it-lin-012 ~]$ grep TestTable,0089182778,1247979707102
> >
>  /disk1/opt/kindsight/hbase/hbase/logs/hbase-haijun-regionserver-snv-it-lin-012.log.2009-07-18
> > 2009-07-18 22:04:54,014 INFO
> > org.apache.hadoop.hbase.regionserver.HRegionServer: MSG_REGION_OPEN:
> > TestTable,0089182778,1247979707102
> > 2009-07-18 22:04:54,015 INFO
> > org.apache.hadoop.hbase.regionserver.HRegionServer: Worker:
> MSG_REGION_OPEN:
> > TestTable,0089182778,1247979707102
> > 2009-07-18 22:04:57,085 INFO
> > org.apache.hadoop.hbase.regionserver.HRegionServer: MSG_REGION_OPEN:
> > TestTable,0089182778,1247979707102
> > 2009-07-18 22:05:00,077 INFO
> >  org.apache.hadoop.hbase.regionserver.HRegion: region
> >  TestTable,0089182778,1247979707102/1884010304 available; sequence id is
> > 57144455
> > 2009-07-18 22:05:00,100 INFO
> > org.apache.hadoop.hbase.regionserver.HRegionServer: Worker:
> MSG_REGION_OPEN:
> > TestTable,0089182778,1247979707102
> > 2009-07-18 22:05:03,242 INFO
> > org.apache.hadoop.hbase.regionserver.HRegionServer:
> > MSG_REGION_CLOSE_WITHOUT_REPORT: TestTable,0089182778,1247979707102:
> > Duplicate assignment
> > 2009-07-18 22:05:03,242 INFO
> > org.apache.hadoop.hbase.regionserver.HRegionServer: Worker:
> > MSG_REGION_CLOSE_WITHOUT_REPORT: TestTable,0089182778,1247979707102:
> > Duplicate assignment
> > 2009-07-18 22:05:03,243 INFO
> org.apache.hadoop.hbase.regionserver.HRegion:
> > Closed TestTable,0089182778,1247979707102
> >
> >
> >
>
>
>
>
>

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