hi, my job runs once ervey day. but it failed sometimes. i checked the log in job tracker. It seems a hdfs error? thanks a lot!
2011-08-16 21:07:13,247 INFO org.apache.hadoop.mapred.TaskInProgress: Error from attempt_201106021431_1719_r_000498_1: org.ap ache.hadoop.ipc.RemoteException: java.io.IOException: Could not complete write to file /xxx/yyy/110816_210016/_tem porary/_attempt_201106021431_1719_r_000498_1/part-r-00498 by DFSClient_attempt_201106021431_1719_r_000498_1 at org.apache.hadoop.hdfs.server.namenode.NameNode.complete(NameNode.java:449) at sun.reflect.GeneratedMethodAccessor12.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:508) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:959) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:955) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:396) at org.apache.hadoop.ipc.Server$Handler.run(Server.java:953) at org.apache.hadoop.ipc.Client.call(Client.java:740) at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:220) at $Proxy1.complete(Unknown Source) 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.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:82) at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:59) at $Proxy1.complete(Unknown Source) at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.closeInternal(DFSClient.java:3264) at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.close(DFSClient.java:3188) at org.apache.hadoop.fs.FSDataOutputStream$PositionCache.close(FSDataOutputStream.java:61) at org.apache.hadoop.fs.FSDataOutputStream.close(FSDataOutputStream.java:86) at org.apache.hadoop.io.SequenceFile$Writer.close(SequenceFile.java:959) at org.apache.hadoop.io.SequenceFile$BlockCompressWriter.close(SequenceFile.java:1290) at org.apache.hadoop.mapreduce.lib.output.SequenceFileOutputFormat$1.close(SequenceFileOutputFormat.java:78) at org.apache.hadoop.mapred.ReduceTask.runNewReducer(ReduceTask.java:567) at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:408) at org.apache.hadoop.mapred.Child.main(Child.java:170)
