exactly right. Thanks Praveen. Mark On Tue, Jan 10, 2012 at 1:54 AM, Praveen Sripati <[email protected]>wrote:
> Mark, > > > [mark@node67 ~]$ telnet node77 > > You need to specify the port number along with the server name like `telnet > node77 1234`. > > > 2012-01-09 10:04:03,436 INFO org.apache.hadoop.ipc.Client: Retrying > connect to server: localhost/127.0.0.1:12123. Already tried 0 time(s). > > Slaves are not able to connect to the master. The configurations ` > fs.default.name` and `mapred.job.tracker` should point to the master and > not to localhost when the master and slaves are on different machines. > > Praveen > > On Mon, Jan 9, 2012 at 11:41 PM, Mark question <[email protected]> > wrote: > > > Hello guys, > > > > I'm requesting from a PBS scheduler a number of machines to run Hadoop > > and even though all hadoop daemons start normally on the master and > slaves, > > the slaves don't have worker tasks in them. Digging into that, there > seems > > to be some blocking between nodes (?) don't know how to describe it > except > > that on slave if I "telnet master-node" it should be able to connect, > but > > I get this error: > > > > [mark@node67 ~]$ telnet node77 > > > > Trying 192.168.1.77... > > telnet: connect to address 192.168.1.77: Connection refused > > telnet: Unable to connect to remote host: Connection refused > > > > The log at the slave nodes shows the same thing, even though it has > > datanode and tasktracker started from the maste (?): > > > > 2012-01-09 10:04:03,436 INFO org.apache.hadoop.ipc.Client: Retrying > > connect > > to server: localhost/127.0.0.1:12123. Already tried 0 time(s). > > 2012-01-09 10:04:04,439 INFO org.apache.hadoop.ipc.Client: Retrying > > connect > > to server: localhost/127.0.0.1:12123. Already tried 1 time(s). > > 2012-01-09 10:04:05,442 INFO org.apache.hadoop.ipc.Client: Retrying > > connect > > to server: localhost/127.0.0.1:12123. Already tried 2 time(s). > > 2012-01-09 10:04:06,444 INFO org.apache.hadoop.ipc.Client: Retrying > > connect > > to server: localhost/127.0.0.1:12123. Already tried 3 time(s). > > 2012-01-09 10:04:07,446 INFO org.apache.hadoop.ipc.Client: Retrying > > connect > > to server: localhost/127.0.0.1:12123. Already tried 4 time(s). > > 2012-01-09 10:04:08,448 INFO org.apache.hadoop.ipc.Client: Retrying > > connect > > to server: localhost/127.0.0.1:12123. Already tried 5 time(s). > > 2012-01-09 10:04:09,450 INFO org.apache.hadoop.ipc.Client: Retrying > > connect > > to server: localhost/127.0.0.1:12123. Already tried 6 time(s). > > 2012-01-09 10:04:10,452 INFO org.apache.hadoop.ipc.Client: Retrying > > connect > > to server: localhost/127.0.0.1:12123. Already tried 7 time(s). > > 2012-01-09 10:04:11,454 INFO org.apache.hadoop.ipc.Client: Retrying > > connect > > to server: localhost/127.0.0.1:12123. Already tried 8 time(s). > > 2012-01-09 10:04:12,456 INFO org.apache.hadoop.ipc.Client: Retrying > > connect > > to server: localhost/127.0.0.1:12123. Already tried 9 time(s). > > 2012-01-09 10:04:12,456 INFO org.apache.hadoop.ipc.RPC: Server at > > localhost/ > > 127.0.0.1:12123 not available yet, Zzzzz... > > > > Any suggestions of what I can do? > > > > Thanks, > > Mark > > >
