Estoy implementando el Clúster de nodo único de Hadoop en mi máquina siguiendoTutorial de michael noll y han llegado a través de error de replicación de datos:

Aquí está el mensaje de error completo:

<code>> hadoop@laptop:~/hadoop$ bin/hadoop dfs -copyFromLocal
> tmp/testfiles testfiles
> 
> 12/05/04 16:18:41 WARN hdfs.DFSClient: DataStreamer Exception:
> org.apache.hadoop.ipc.RemoteException: java.io.IOException: File
> /user/hadoop/testfiles/testfiles/file1.txt could only be replicated to
> 0 nodes, instead of 1   at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:1271)
>     at
> org.apache.hadoop.hdfs.server.namenode.NameNode.addBlock(NameNode.java:422)
>     at sun.reflect.GeneratedMethodAccessor7.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
> $Proxy0.addBlock(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 $Proxy0.addBlock(Unknown Source)     at
> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.locateFollowingBlock(DFSClient.java:2937)
>     at
> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.nextBlockOutputStream(DFSClient.java:2819)
>     at
> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.access$2000(DFSClient.java:2102)
>     at
> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream$DataStreamer.run(DFSClient.java:2288)
> 
> 12/05/04 16:18:41 WARN hdfs.DFSClient: Error Recovery for block null
> bad datanode[0] nodes == null 12/05/04 16:18:41 WARN hdfs.DFSClient:
> Could not get block locations. Source file
> "/user/hadoop/testfiles/testfiles/file1.txt" - Aborting...
> copyFromLocal: java.io.IOException: File
> /user/hadoop/testfiles/testfiles/file1.txt could only be replicated to
> 0 nodes, instead of 1 12/05/04 16:18:41 ERROR hdfs.DFSClient:
> Exception closing file /user/hadoop/testfiles/testfiles/file1.txt :
> org.apache.hadoop.ipc.RemoteException: java.io.IOException: File
> /user/hadoop/testfiles/testfiles/file1.txt could only be replicated to
> 0 nodes, instead of 1   at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:1271)
>     at
> org.apache.hadoop.hdfs.server.namenode.NameNode.addBlock(NameNode.java:422)
>     at sun.reflect.GeneratedMethodAccessor7.invoke(Unknown Source)  at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>     at java.lang.reflect.Method.invoke(Method.java:597)     at
> org.apache.hadoop.ipc.RPC$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)
> 
> org.apache.hadoop.ipc.RemoteException: java.io.IOException: File
> /user/hadoop/testfiles/testfiles/file1.txt could only be replicated to
> 0 nodes, instead of 1   at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:1271)
>     at
> org.apache.hadoop.hdfs.server.namenode.NameNode.addBlock(NameNode.java:422)
>     at sun.reflect.GeneratedMethodAccessor7.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
> $Proxy0.addBlock(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 $Proxy0.addBlock(Unknown Source)     at
> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.locateFollowingBlock(DFSClient.java:2937)
>     at
> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.nextBlockOutputStream(DFSClient.java:2819)
>     at
> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.access$2000(DFSClient.java:2102)
>     at
> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream$DataStreamer.run(DFSClient.java:2288)
</code>

También cuando ejecuto:

<code>bin/stop-all.sh
</code>

Dice que datanode no se ha iniciado y, por lo tanto, no se puede detener. Aunque, la salida dejps Dice que el código de datos está presente.

Lo intentéformatear el namenode, cambio de permisos de propietario, pero no parece funcionar. Espero no haberme perdido ninguna otra información relevante.

Gracias por adelantado.