Hi Subir, For me it was a ssh configuration issue. Steps taken
1. Executed the "start-mapred.sh" 2. Got the "ssh_exchange_identification closed by remote host" 3. Tried connecting to the same machine using ssh (ssh localhost). Secondary node was not able to do a "ssh localhost". 4. Configured this and finally got it working Hope this saves someone's time !! Thanks On Fri, Mar 9, 2012 at 2:28 AM, Subir S <subir.sasiku...@gmail.com> wrote: > what was the solution? > > On Fri, Mar 9, 2012 at 2:03 PM, Atul Thapliyal <aatul.thapli...@gmail.com > >wrote: > > > Hello Hadoop users, > > > > Issue described here is resolved now. > > > > Thanks > > > > On Thu, Mar 8, 2012 at 10:51 PM, Atul Thapliyal > > <aatul.thapli...@gmail.com>wrote: > > > > > Hi Hadoop users, > > > > > > I am new member and please let me know if this is not the correct > format > > > to ask questions. > > > > > > I am trying to setup a small Hadoop cluster where I will run Pig > queries. > > > Hadoop cluster is running fine but when I run a pig query it just > hangs. > > > > > > Note - Pig runs fine in local mode > > > > > > So I narrowed down the errors to the following - > > > > > > I have a secondary name node on a different machine (.e.g node 2). > > > > > > Point 1. > > > When I execute start-mapred.sh on node 2, I get > > > "ssh_exchange_identification closed by remote host" message. BUT the > > > secondary name node starts with no error messages in the log > > > I can even access it through port 50030 > > > > > > So far no errors > > > > > > Point 2. > > > When I try to run a map-reduce job. I get a "java.net.ConnectException: > > > Connection refused" error in the secondary name node log files. > > > > > > Are point 1 and point 2 related > > > > > > Any hints / pointers on how to solve this ? Also, ssh time out is set > to > > > 20 so I am assuming that error is not because of this. > > > > > > Thanks for reading > > > > > > -- > > > Warm Regards > > > Atul > > > > > > > > > > > -- > > Warm Regards > > Atul > > > -- Warm Regards Atul
