Hi, Well, actually, I'm configured to have 3 replicas, the default. So this, is a first issue. And yes, the datanode is up and reponding, this problem only happens from time to time.
Thanks :) On Thu, Jul 1, 2010 at 10:49 AM, Harsh J <[email protected]> wrote: > Did you check if your Datanode(s) is/are up? The Namenode's web > interface reports statistics about live/dead datanodes. > > NN is trying to replicate your data to N (in your case, 1) datanodes > but it can find none. > > On Thu, Jul 1, 2010 at 1:48 PM, Pierre ANCELOT <[email protected]> wrote: >> Hello everyone :) >> Any idea how to troubleshoot this please? >> I don't get where this comes from. >> >> >> 2010-07-01 08:29:02,721 WARN org.apache.hadoop.hdfs.DFSClient: >> DataStreamer Exception: org.apache.hadoop.ipc.RemoteException: >> java.io.IOException: File >> /acd/Dispatch/data/user100/historyreport/020920360E55A807CECDFC34621E90C5/last >> 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.GeneratedMethodAccessor68.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 $Proxy1.addBlock(Unknown Source) >> at sun.reflect.GeneratedMethodAccessor5.invoke(Unknown Source) >> >> >> 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: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) >> >> >> Thank you. >> >> -- >> http://www.neko-consulting.com >> Ego sum quis ego servo >> "Je suis ce que je protège" >> "I am what I protect" >> > > > > -- > Harsh J > www.harshj.com > -- http://www.neko-consulting.com Ego sum quis ego servo "Je suis ce que je protège" "I am what I protect"
