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 <[email protected]> wrote: > > Yes, as recent as: Jul 16 13:48 > > > Haijun > > > ________________________________ > From: stack <[email protected]> > To: [email protected] > 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 <[email protected]> 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: > > > > [hai...@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 > > > > > > > > > > >
