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From "Edward J. Yoon" <edwardy...@apache.org>
Subject UnknownScannerException
Date Tue, 04 Nov 2008 02:30:50 GMT
While matrix-matrix mult, I received a message as below. Does anyone
know about UnknownScannerException?

----
08/11/04 11:24:57 INFO mapred.JobClient:  map 90% reduce 28%
08/11/04 11:24:59 INFO mapred.JobClient:  map 90% reduce 30%
08/11/04 11:26:49 INFO mapred.JobClient: Task Id :
attempt_200811041040_0003_m_000002_0, Status : FAILED
org.apache.hadoop.hbase.UnknownScannerException:
org.apache.hadoop.hbase.UnknownScannerException: Name:
-1151932123796109789
        at org.apache.hadoop.hbase.regionserver.HRegionServer.next(HRegionServer.java:1077)
        at sun.reflect.GeneratedMethodAccessor5.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$Server.call(HbaseRPC.java:554)
        at org.apache.hadoop.ipc.Server$Handler.run(Server.java:888)

        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
        at org.apache.hadoop.hbase.RemoteExceptionHandler.decodeRemoteException(RemoteExceptionHandler.java:82)
        at org.apache.hadoop.hbase.client.HConnectionManager$TableServers.getRegionServerWithRetries(HConnectionManager.java:856)
        at org.apache.hadoop.hbase.client.HTable$ClientScanner.next(HTable.java:1155)
        at org.apache.hama.mapred.MatrixInputFormatBase$TableRecordReader.next(MatrixInputFormatBase.java:174)
        at org.apache.hama.mapred.MatrixInputFormatBase$TableRecordReader.next(MatrixInputFormatBase.java:56)
        at org.apache.hadoop.mapred.MapTask$TrackedRecordReader.next(MapTask.java:165)
        at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:45)
        at org.apache.hadoop.mapred.MapTask.run(MapTask.java:227)
        at org.apache.hadoop.mapred.TaskTracker$Child.main(TaskTracker.java:2207)

08/11/04 11:27:11 INFO mapred.JobClient:  map 100% reduce 30%
08/11/04 11:27:17 INFO mapred.JobClient:  map 100% reduce 64%
08/11/04 11:27:23 INFO mapred.JobClient: Job complete: job_200811041040_0003
08/11/04 11:27:23 INFO mapred.JobClient: Counters: 13
08/11/04 11:27:23 INFO mapred.JobClient:   File Systems
08/11/04 11:27:23 INFO mapred.JobClient:     Local bytes read=32057196
08/11/04 11:27:23 INFO mapred.JobClient:     Local bytes written=64599524

-- 
Best regards, Edward J. Yoon @ NHN, corp.
edwardyoon@apache.org
http://blog.udanax.org

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