What causes the following error? It's coming from the
TableInputFormatBase class. It seems to be fairly random for me.
From what I've read so far, its related to a timeout error? I
verified my map task doesn't take long to process. Anything else that
may cause this?
org.apache.hadoop.hbase.UnknownScannerException:
org.apache.hadoop.hbase.UnknownScannerException: Name:
4797186499140551292
at
org
.apache
.hadoop.hbase.regionserver.HRegionServer.next(HRegionServer.java:1115)
at sun.reflect.GeneratedMethodAccessor4.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$Server.call(HbaseRPC.java:473)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:896)
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:885)
at org.apache.hadoop.hbase.client.HTable
$ClientScanner.next(HTable.java:1321)
at org.apache.hadoop.hbase.mapred.TableInputFormatBase
$TableRecordReader.next(TableInputFormatBase.java:202)
at org.apache.hadoop.hbase.mapred.TableInputFormatBase
$TableRecordReader.next(TableInputFormatBase.java:84)
at org.apache.hadoop.mapred.MapTask
$TrackedRecordReader.next(MapTask.java:158)
at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:45)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:219)
at org.apache.hadoop.mapred.TaskTracker$Child.main(TaskTracker.java:
2124)
