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From Jon Lederman <jon2...@me.com>
Subject Could Only Replicate To 0 Nodes Instead Of 1
Date Mon, 21 Mar 2011 15:55:24 GMT
Hi,

Upon trying a simple copyFromLocal I am receiving an error message "could only be replicated
to 0 nodes instead of 1" as indicated below.
All of my configuration appears ok and all daemons are running.

Can anyone suggest any thoughts on troubleshooting?  The error is listed below.

-sh-4.1# hadoop dfs -copyFromLocal /texts texts
70/01/01 00:28:30 WARN hdfs.DFSClient: DataStreamer Exception: org.apache.hadoop.ipc.RemoteException:
java.io.IOException: File /user/root/texts/king_lear.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.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:616)
	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$1.run(Server.java:955)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:416)
	at org.apache.hadoop.ipc.Server$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:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:616)
	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)

70/01/01 00:28:30 WARN hdfs.DFSClient: Error Recovery for block null bad datanode[0] nodes
== null
70/01/01 00:28:30 WARN hdfs.DFSClient: Could not get block locations. Source file "/user/root/texts/king_lear.txt"
- Aborting...
copyFromLocal: java.io.IOException: File /user/root/texts/king_lear.txt could only be replicated
to 0 nodes, instead of 1
70/01/01 00:28:30 ERROR hdfs.DFSClient: Exception closing file /user/root/texts/king_lear.txt
: org.apache.hadoop.ipc.RemoteException: java.io.IOException: File /user/root/texts/king_lear.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.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:616)
	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$1.run(Server.java:955)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:416)
	at org.apache.hadoop.ipc.Server$Handler.run(Server.java:953)

org.apache.hadoop.ipc.RemoteException: java.io.IOException: File /user/root/texts/king_lear.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.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:616)
	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$1.run(Server.java:955)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:416)
	at org.apache.hadoop.ipc.Server$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:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:616)
	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)
-sh-4.1#

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