Could you please go to the dfs webUI and check how many datanodes are up and how much available space each has?
Hairong On 5/8/08 3:30 AM, "jasongs" <[EMAIL PROTECTED]> wrote: > > I get the same error when doing a put and my cluster is running ok > > i.e. has capacity and all nodes are live. > Error message is > org.apache.hadoop.ipc.RemoteException: java.io.IOException: File > /test/test.txt could only be replicated to 0 nodes, instead of 1 > at > org.apache.hadoop.dfs.FSNamesystem.getAdditionalBlock(FSNamesystem.java:1127) > at org.apache.hadoop.dfs.NameNode.addBlock(NameNode.java:312) > at sun.reflect.GeneratedMethodAccessor11.invoke(Unknown Source) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.j > ava:25) > at java.lang.reflect.Method.invoke(Method.java:585) > at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:409) > at org.apache.hadoop.ipc.Server$Handler.run(Server.java:901) > > at org.apache.hadoop.ipc.Client.call(Client.java:512) > at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:198) > at org.apache.hadoop.dfs.$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.j > ava:25) > at java.lang.reflect.Method.invoke(Method.java:585) > at > org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocation > Handler.java:82) > at > org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandle > r.java:59) > at org.apache.hadoop.dfs.$Proxy0.addBlock(Unknown Source) > at > org.apache.hadoop.dfs.DFSClient$DFSOutputStream.locateFollowingBlock(DFSClient > .java:2074) > at > org.apache.hadoop.dfs.DFSClient$DFSOutputStream.nextBlockOutputStream(DFSClien > t.java:1967) > at > org.apache.hadoop.dfs.DFSClient$DFSOutputStream.access$1500(DFSClient.java:148 > 7) > at > org.apache.hadoop.dfs.DFSClient$DFSOutputStream$DataStreamer.run(DFSClient.jav > a:1601) > I would appreciate any help/suggestions > > Thanks > > > jerrro wrote: >> >> I am trying to install/configure hadoop on a cluster with several >> computers. I followed exactly the instructions in the hadoop website for >> configuring multiple slaves, and when I run start-all.sh I get no errors - >> both datanode and tasktracker are reported to be running (doing ps awux | >> grep hadoop on the slave nodes returns two java processes). Also, the log >> files are empty - nothing is printed there. Still, when I try to use >> bin/hadoop dfs -put, >> I get the following error: >> >> # bin/hadoop dfs -put w.txt w.txt >> put: java.io.IOException: File /user/scohen/w4.txt could only be >> replicated to 0 nodes, instead of 1 >> >> and a file of size 0 is created on the DFS (bin/hadoop dfs -ls shows it). >> >> I couldn't find much information about this error, but I did manage to see >> somewhere it might mean that there are no datanodes running. But as I >> said, start-all does not give any errors. Any ideas what could be problem? >> >> Thanks. >> >> Jerr. >>
