DataNode receives an unknown opcode
-----------------------------------
Key: HADOOP-1119
URL: https://issues.apache.org/jira/browse/HADOOP-1119
Project: Hadoop
Issue Type: Bug
Components: dfs
Affects Versions: 0.12.0
Reporter: Nigel Daley
I'm seeing 3 instance of *each* of these exceptions across various logs when
running RandomWriter. The times seem to be well correlated.
JT Log:
2007-03-14 06:23:29,312 INFO org.apache.hadoop.mapred.TaskInProgress: Error
from task_0001_m_000051_0: java.io.FileNotFoundException:
/e/c/k/hqa/dfs/data500/tmp/client-8331829540309757259 (No such file or
directory)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(FileInputStream.java:106)
at
org.apache.hadoop.dfs.DFSClient$DFSOutputStream.endBlock(DFSClient.java:1284)
at
org.apache.hadoop.dfs.DFSClient$DFSOutputStream.flush(DFSClient.java:1236)
at
org.apache.hadoop.dfs.DFSClient$DFSOutputStream.write(DFSClient.java:1218)
at
org.apache.hadoop.fs.FSDataOutputStream$PositionCache.write(FSDataOutputStream.java:38)
at java.io.BufferedOutputStream.write(BufferedOutputStream.java:105)
at java.io.DataOutputStream.write(DataOutputStream.java:90)
at
org.apache.hadoop.fs.ChecksumFileSystem$FSOutputSummer.write(ChecksumFileSystem.java:391)
at
org.apache.hadoop.fs.FSDataOutputStream$PositionCache.write(FSDataOutputStream.java:38)
at
java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:65)
at java.io.BufferedOutputStream.write(BufferedOutputStream.java:109)
at java.io.DataOutputStream.write(DataOutputStream.java:90)
at
org.apache.hadoop.io.SequenceFile$Writer.append(SequenceFile.java:771)
at
org.apache.hadoop.examples.RandomWriter$Map.map(RandomWriter.java:164)
at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:48)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:175)
at
org.apache.hadoop.mapred.TaskTracker$Child.main(TaskTracker.java:1445)
DN Log:
2007-03-14 06:23:26,166 ERROR org.apache.hadoop.dfs.DataNode: DataXCeiver
java.io.IOException: Unknown opcode for incoming data stream
at org.apache.hadoop.dfs.DataNode$DataXceiver.run(DataNode.java:605)
NN Log:
2007-03-14 06:23:45,935 WARN org.apache.hadoop.dfs.StateChange: DIR*
NameSystem.startFile: failed to create file /u/hqa/sort/input/part-51 for
DFSClient_task_0001_m_000051_1 on client 72.3.5.5 because pendingCreates is
non-null.
2007-03-14 06:23:45,938 INFO org.apache.hadoop.ipc.Server: IPC Server handler 4
on 8020 call error: org.apache.hadoop.dfs.AlreadyBeingCreatedException: failed
to create file /u/hqa/sort/input/part-51 for DFSClient_task_0001_m_000051_1 on
client 72.3.5.5 because pendingCreates is non-null.
org.apache.hadoop.dfs.AlreadyBeingCreatedException: failed to create file
/u/hqa/sort/input/part-51 for DFSClient_task_0001_m_000051_1 on client 72.3.5.5
because pendingCreates is non-null.
at org.apache.hadoop.dfs.FSNamesystem.startFile(FSNamesystem.java:701)
at org.apache.hadoop.dfs.NameNode.create(NameNode.java:283)
at sun.reflect.GeneratedMethodAccessor14.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$Server.call(RPC.java:336)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:559)
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