Apurv, Take a look at the FAQ: http://wiki.apache.org/hadoop/FAQ#What_does_.22file_could_only_be_replicated_to_0_nodes.2C_instead_of_1.22_mean.3F
On 11-Jan-2012, at 8:15 AM, Apurv Verma wrote: > When I run this command, I get an error message. This problem started first > when I first accessed HDFS programatically. I am on a single node cluster in > ubuntu. > > hadoop dfs -copyFromLocal /home/apurv/bigdataLocal/macbeth.txt > /home/apurv/bigdataRemote/ > > > 12/01/11 08:07:49 WARN hdfs.DFSClient: DataStreamer Exception: > org.apache.hadoop.ipc.RemoteException: java.io.IOException: File > /home/apurv/bigdataRemote could only be replicated to 0 nodes, instead of 1 > at > org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:1417) > at > org.apache.hadoop.hdfs.server.namenode.NameNode.addBlock(NameNode.java:596) > 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.ipc.RPC$Server.call(RPC.java:523) > at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1383) > at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1379) > at java.security.AccessController.doPrivileged(Native Method) > at javax.security.auth.Subject.doAs(Subject.java:396) > at > org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1059) > at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1377) > > at org.apache.hadoop.ipc.Client.call(Client.java:1030) > at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:224) > at $Proxy1.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 $Proxy1.addBlock(Unknown Source) > at > org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.locateFollowingBlock(DFSClient.java:3104) > at > org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.nextBlockOutputStream(DFSClient.java:2975) > at > org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.access$2000(DFSClient.java:2255) > at > org.apache.hadoop.hdfs.DFSClient$DFSOutputStream$DataStreamer.run(DFSClient.java:2446) > > 12/01/11 08:07:49 WARN hdfs.DFSClient: Error Recovery for block null bad > datanode[0] nodes == null > 12/01/11 08:07:49 WARN hdfs.DFSClient: Could not get block locations. Source > file "/home/apurv/bigdataRemote" - Aborting... > copyFromLocal: java.io.IOException: File /home/apurv/bigdataRemote could only > be replicated to 0 nodes, instead of 1 > 12/01/11 08:07:49 ERROR hdfs.DFSClient: Exception closing file > /home/apurv/bigdataRemote : org.apache.hadoop.ipc.RemoteException: > java.io.IOException: File /home/apurv/bigdataRemote could only be replicated > to 0 nodes, instead of 1 > at > org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:1417) > at > org.apache.hadoop.hdfs.server.namenode.NameNode.addBlock(NameNode.java:596) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) > at java.lang.reflect.Method.invoke(Method.java:597) > at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:523) > at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1383) > at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1379) > at java.security.AccessController.doPrivileged(Native Method) > at javax.security.auth.Subject.doAs(Subject.java:396) > at > org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1059) > at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1377) > > org.apache.hadoop.ipc.RemoteException: java.io.IOException: File > /home/apurv/bigdataRemote could only be replicated to 0 nodes, instead of 1 > at > org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:1417) > at > org.apache.hadoop.hdfs.server.namenode.NameNode.addBlock(NameNode.java:596) > 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.ipc.RPC$Server.call(RPC.java:523) > at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1383) > at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1379) > at java.security.AccessController.doPrivileged(Native Method) > at javax.security.auth.Subject.doAs(Subject.java:396) > at > org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1059) > at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1377) > > at org.apache.hadoop.ipc.Client.call(Client.java:1030) > at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:224) > at $Proxy1.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 $Proxy1.addBlock(Unknown Source) > at > org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.locateFollowingBlock(DFSClient.java:3104) > at > org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.nextBlockOutputStream(DFSClient.java:2975) > at > org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.access$2000(DFSClient.java:2255) > at > org.apache.hadoop.hdfs.DFSClient$DFSOutputStream$DataStreamer.run(DFSClient.java:2446) > > > -- > thanks and regards, > > Apurv Verma > B. Tech.(CSE) > IIT- Ropar > > > >
