Hey My TT logs show this , 2011-09-06 13:22:41,860 ERROR org.apache.hadoop.mapred.TaskTracker: Caught exception: java.net.UnknownHostException: unknown host: rip-pc.local at org.apache.hadoop.ipc.Client$Connection.<init>(Client.java:195) at org.apache.hadoop.ipc.Client.getConnection(Client.java:853) at org.apache.hadoop.ipc.Client.call(Client.java:723) at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:220) at $Proxy5.getProtocolVersion(Unknown Source) at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:359) at org.apache.hadoop.hdfs.DFSClient.createRPCNamenode(DFSClient.java:106) at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:207) at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:170) at org.apache.hadoop.hdfs.DistributedFileSystem.initialize(DistributedFileSystem.java:82) ^C at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:1378) at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:66) at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:1390) at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:196)
May be some error in configs ?? I am using IPs in the conf files ..should I put entries in /etc/hosts files? On Tue, Sep 6, 2011 at 3:00 PM, john smith <[email protected]> wrote: > Hi Harsh, > > My jt log : http://pastebin.com/rXAEeDkC > > I have some startup exceptions (which doesn't matter much I guess) but the > tail indicates that its locating the splits correctly and then it hangs ! > > Any idea? > > Thanks > > > On Tue, Sep 6, 2011 at 1:30 PM, Harsh J <[email protected]> wrote: > >> I'd check the tail of JobTracker logs after a submit is done to see if >> an error/warn there is causing this. And then dig further on >> why/what/how. >> >> Hard to tell what your problem specifically is without logs :) >> >> On Tue, Sep 6, 2011 at 1:18 PM, john smith <[email protected]> >> wrote: >> > Hi Folks, >> > >> > I am working on a 3 node cluster (1 NN + 2 DNs) . I loaded some test >> data >> > with replication factor 3 (around 400MB data). However when I run >> wordcount >> > example , it hangs at map 0%. >> > >> > bin/hadoop jar hadoop-examples-0.20.3-SNAPSHOT.jar wordcount /test_data >> > /out2 >> > 11/09/06 13:07:28 INFO input.FileInputFormat: Total input paths to >> process : >> > 2 >> > 11/09/06 13:07:28 INFO mapred.JobClient: Running job: >> job_201109061248_0002 >> > 11/09/06 13:07:29 INFO mapred.JobClient: map 0% reduce 0% >> > >> > TTs and DNs are running fine on my slaves . I see them running when I >> run >> > jps command. >> > >> > >> > Can any one help me out on this? Any idea why this would happen? I am >> > totally clueless as nothing shows up in logs too.! >> > >> > Thanks, >> > jS >> > >> >> >> >> -- >> Harsh J >> > >
