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From schubert zhang <zson...@gmail.com>
Subject Re: Metadata and region mismatch
Date Thu, 12 Mar 2009 11:31:46 GMT
oh, it is not fine.
Now, I can find:
TESTTABLE,13575565132@2008-12-01
17:16:55.117,1236847258901<http://nd0-rack0-cloud:60010/regionhistorian.jsp?regionname=WAPCDR,13575565132@2008-12-01%2017:16:55.117,1236847258901>
nd1-rack0-cloud:60020 <http://nd1-rack0-cloud:60030/> 916003194
13575565132@2008-12-01 17:16:55.117 13576301358@2008-12-08 13:57:43.163

but when I try to get get 13575565132@2008-12-01 17:16:55.117, nothing
returned. It seems this region is gone.


On Thu, Mar 12, 2009 at 7:09 PM, schubert zhang <zsongbo@gmail.com> wrote:

> Hi all,
> Today, I encounter a new issue about failure to batchUpdate commit.
>
> I am running a program to insert rows into a HBase table, but after long
> time of batchUpdating, following exception occur:
>
> org.apache.hadoop.hbase.client.RetriesExhaustedException: Trying to contact
> region server Some server for region TESTTABLE,13575565132@2008-12-0117:16:55.117,1236847258901,
row '13575581009@2008-12-0606:15:48.077', but failed after 10 attempts.
> Exceptions:
>         at
> org.apache.hadoop.hbase.client.HConnectionManager$TableServers.processBatchOfRows(HConnectionManager.java:942)
>         at
> org.apache.hadoop.hbase.client.HTable.flushCommits(HTable.java:1372)
>         at org.apache.hadoop.hbase.client.HTable.close(HTable.java:1385)
>         ......
>
> And after waiting for a long time, I still cannot insert new data.
>
> Then, I check the HBase status, all master and regionservers are running.
>
> But, I find a mismatch about region "TESTTABLE,13575565132@2008-12-0117:16:55.117,1236847258901".
> In the metadata, I found it said this region is severed by 10.24.1.12, but
> when I check into 10.24.1.12, there is no this region.
> And then, I stop all HBase cluster and start it. Regions locations are
> re-structured and seems everything is OK.
>
> In the log file of 10.24.1.12, I found following exceptions:
>
> 836118938_60020/hlog.dat.1236849158178, entries=100010. New log writer:
> /hbase/log_10.24.1.12_1236836118938_60020/hlog.dat.1236849168393
> 2009-03-12 17:12:49,298 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> compaction completed on region TESTTABLE,13575565132@2008-12-0117:16:55.117,1236847258901
in 48sec
> 2009-03-12 17:12:49,298 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> Starting split of region TESTTABLE,13575565132@2008-12-0117:16:55.117,1236847258901
> 2009-03-12 17:12:50,648 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> Closed TESTTABLE,13575565132@2008-12-01 17:16:55.117,1236847258901
> 2009-03-12 17:12:50,809 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> region TESTTABLE,13575565132@2008-12-0117:16:55.117,1236849169299/1762744366 available
> 2009-03-12 17:12:50,809 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> Closed TESTTABLE,13575565132@2008-12-01 17:16:55.117,1236849169299
> 2009-03-12 17:12:50,865 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> region TESTTABLE,13575590622@2008-12-1615:49:40.143,1236849169299/1344805089 available
> 2009-03-12 17:12:50,865 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> Closed TESTTABLE,13575590622@2008-12-16 15:49:40.143,1236849169299
> 2009-03-12 17:29:15,495 WARN org.apache.hadoop.hbase.RegionHistorian:
> Unable to 'Region split from: WAPCDR,13575565132@2008-12-0117:16:55.117,1236847258901'
> org.apache.hadoop.hbase.client.RetriesExhaustedException: Trying to contact
> region server Some server for region , row 'TESTTABLE,13575565132@2008-12-0117:16:55.117,1236849169299',
but failed after 11 attempts.
> Exceptions:
> org.apache.hadoop.hbase.NotServingRegionException:
> org.apache.hadoop.hbase.NotServingRegionException: -ROOT-,,0
>         at
> org.apache.hadoop.hbase.regionserver.HRegionServer.getRegion(HRegionServer.java:2065)
>         at
> org.apache.hadoop.hbase.regionserver.HRegionServer.getClosestRowBefore(HRegionServer.java:1546)
>         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>         at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>         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:632)
>         at
> org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:895)
>
> org.apache.hadoop.hbase.NotServingRegionException:
> org.apache.hadoop.hbase.NotServingRegionException: -ROOT-,,0
>         at
> org.apache.hadoop.hbase.regionserver.HRegionServer.getRegion(HRegionServer.java:2065)
>         at
> org.apache.hadoop.hbase.regionserver.HRegionServer.getClosestRowBefore(HRegionServer.java:1546)
>         at sun.reflect.GeneratedMethodAccessor13.invoke(Unknown Source)
>         at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>         at java.lang.reflect.Method.invoke(Method.java:597)
>         at
> org.apache.hadoop.hbase.ipc.HBaseRPC$Server.call(HBaseRPC.java:632)
>         at
> org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:895)
>
> org.apache.hadoop.hbase.NotServingRegionException:
> org.apache.hadoop.hbase.NotServingRegionException: -ROOT-,,0
>

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