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MapReduce, mail # user - Failed to run wordcount on YARN


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Failed to run wordcount on YARN
Liu, Raymond 2013-07-12, 07:26
Hi

I just start to try out hadoop2.0, I use the 2.0.5-alpha package

And follow

http://hadoop.apache.org/docs/r2.0.5-alpha/hadoop-project-dist/hadoop-common/ClusterSetup.html

to setup a cluster in non-security mode. HDFS works fine with client tools.

While when I run wordcount example, there are errors :

./bin/hadoop jar ./share/hadoop/mapreduce/hadoop-mapreduce-examples-2.0.5-alpha.jar wordcount /tmp /out
13/07/12 15:05:53 INFO mapreduce.Job: Task Id : attempt_1373609123233_0004_m_000004_0, Status : FAILED
Error: java.io.FileNotFoundException: Path is not a file: /tmp/hadoop-yarn
        at org.apache.hadoop.hdfs.server.namenode.INodeFile.valueOf(INodeFile.java:42)
        at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocationsUpdateTimes(FSNamesystem.java:1317)
        at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocationsInt(FSNamesystem.java:1276)
        at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocations(FSNamesystem.java:1252)
        at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocations(FSNamesystem.java:1225)
        at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.getBlockLocations(NameNodeRpcServer.java:403)
        at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.getBlockLocations(ClientNamenodeProtocolServerSideTranslatorPB.java:239)
        at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java:40728)
        at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:454)
        at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1014)
        at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1741)
        at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1737)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:415)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1478)
        at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1735)

        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:525)
        at org.apache.hadoop.ipc.RemoteException.instantiateException(RemoteException.java:90)
        at org.apache.hadoop.ipc.RemoteException.unwrapRemoteException(RemoteException.java:57)
        at org.apache.hadoop.hdfs.DFSClient.callGetBlockLocations(DFSClient.java:986)
        at org.apache.hadoop.hdfs.DFSClient.getLocatedBlocks(DFSClient.java:974)
        at org.apache.hadoop.hdfs.DFSInputStream.fetchLocatedBlocksAndGetLastBlockLength(DFSInputStream.java:157)
        at org.apache.hadoop.hdfs.DFSInputStream.openInfo(DFSInputStream.java:124)
        at org.apache.hadoop.hdfs.DFSInputStream.<init>(DFSInputStream.java:117)
        at org.apache.hadoop.hdfs.DFSClient.open(DFSClient.java:1131)
        at org.apache.hadoop.hdfs.DistributedFileSystem.open(DistributedFileSystem.java:244)
        at org.apache.hadoop.hdfs.DistributedFileSystem.open(DistributedFileSystem.java:77)
        at org.apache.hadoop.fs.FileSystem.open(FileSystem.java:713)
        at org.apache.hadoop.mapreduce.lib.input.LineRecordReader.initialize(LineRecordReader.java:89)
        at org.apache.hadoop.mapred.MapTask$NewTrackingRecordReader.initialize(MapTask.java:519)
        at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:756)
        at org.apache.hadoop.mapred.MapTask.run(MapTask.java:339)
        at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:158)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:415)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1478)
        at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:153)

I check the HDFS and found /tmp/hadoop-yarn is there , this dir's owner is the same as the job user.

And to ensure it works, I also create /tmp/hadoop-yarn on local fs. None of it works.

Any idea what might be the problem? Thx!
Best Regards,
Raymond Liu
+
Devaraj k 2013-07-12, 08:24