Hi. i)Choose a right version ( Hadoop- 0.18 is good)
I'm using 0.18.3. > > ii)replication should be 3 as ur having 3 modes.( Indirectly see to it that > ur configuration is correct !!) > Actually I'm testing 2x replication on any number of DN's, to see how reliable is it. > > Hey even i am just suggesting this as i am also a new to hadoop > > Ashish Pareek > > > On Thu, May 21, 2009 at 2:41 PM, Stas Oskin <stas.os...@gmail.com> wrote: > > > Hi. > > > > I'm testing Hadoop in our lab, and started getting the following message > > when trying to copy a file: > > Could only be replicated to 0 nodes, instead of 1 > > > > I have the following setup: > > > > * 3 machines, 2 of them with only 80GB of space, and 1 with 1.5GB > > * Two clients are copying files all the time (one of them is the 1.5GB > > machine) > > * The replication is set on 2 > > * I let the space on 2 smaller machines to end, to test the behavior > > > > Now, one of the clients (the one located on 1.5GB) works fine, and the > > other > > one - the external, unable to copy and displays the error + the exception > > below > > > > Any idea if this expected on my scenario? Or how it can be solved? > > > > Thanks in advance. > > > > > > > > 09/05/21 10:51:03 WARN dfs.DFSClient: NotReplicatedYetException sleeping > > /test/test.bin retries left 1 > > > > 09/05/21 10:51:06 WARN dfs.DFSClient: DataStreamer Exception: > > org.apache.hadoop.ipc.RemoteException: java.io.IOException: File > > /test/test.bin could only be replicated to 0 nodes, instead of 1 > > > > at > > > > > org.apache.hadoop.dfs.FSNamesystem.getAdditionalBlock(FSNamesystem.java:1123 > > ) > > > > at org.apache.hadoop.dfs.NameNode.addBlock(NameNode.java:330) > > > > at sun.reflect.GeneratedMethodAccessor8.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$Server.call(RPC.java:481) > > > > at org.apache.hadoop.ipc.Server$Handler.run(Server.java:890) > > > > > > > > at org.apache.hadoop.ipc.Client.call(Client.java:716) > > > > at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:216) > > > > at org.apache.hadoop.dfs.$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.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 org.apache.hadoop.dfs.$Proxy0.addBlock(Unknown Source) > > > > at > > > > > org.apache.hadoop.dfs.DFSClient$DFSOutputStream.locateFollowingBlock(DFSClient.java:2450 > > ) > > > > at > > > > > org.apache.hadoop.dfs.DFSClient$DFSOutputStream.nextBlockOutputStream(DFSClient.java:2333 > > ) > > > > at > > > > > org.apache.hadoop.dfs.DFSClient$DFSOutputStream.access$1800(DFSClient.java:1745 > > ) > > > > at > > > > > org.apache.hadoop.dfs.DFSClient$DFSOutputStream$DataStreamer.run(DFSClient.java:1922 > > ) > > > > > > > > 09/05/21 10:51:06 WARN dfs.DFSClient: Error Recovery for block null bad > > datanode[0] > > > > java.io.IOException: Could not get block locations. Aborting... > > > > at > > > > > org.apache.hadoop.dfs.DFSClient$DFSOutputStream.processDatanodeError(DFSClient.java:2153 > > ) > > > > at > > > > > org.apache.hadoop.dfs.DFSClient$DFSOutputStream.access$1400(DFSClient.java:1745 > > ) > > > > at > > > > > org.apache.hadoop.dfs.DFSClient$DFSOutputStream$DataStreamer.run(DFSClient.java:1899 > > ) > > >
