Same problem here.. Sachinites have you found a solution? I have three nodes where situation is the same as described above.. Pinging and ssh-ing to the master node works ok, however logs are full of the following info:
"INFO org.apache.hadoop.ipc.Client: Retrying connect to server: hadoopmaster/192.168.12.1:54310" Jobtracker sees just one node (http://hadoopmaster:50030/jobtracker.jsp -> probably the local one). Hadoopmaster node has the following process: " 127.0.0.1:54310 0.0.0.0:* LISTEN 1001 17909 5131/java " so the problem is probably elsewhere.. Do you have any idea what could be wrong? On 11 August 2011 12:19, V@ni <vanitha...@gmail.com> wrote: > > Hi, This can be SSH configuration error. Reinstall SSH and try connecting > to > the master node. Hope it works > > May be dis link might be useful > > http://www.michael-noll.com/tutorials/running-hadoop-on-ubuntu-linux-multi-node-cluster/ > > http://www.michael-noll.com/tutorials/running-hadoop-on-ubuntu-linux-multi-node-cluster/ > > > > > sachinites wrote: > > > > Sir , I tried everywhere on all forums , but could not resoleve this > > problem . please help me out . > > > > I followed your tutorial to run the hadoop , first running a datanode > > locally on the same machine . and it all worked fine . > > > > Then , i configured hadoop to run the namenode , secondarynamenode & and > a > > job tracker and a datanode on one machine , the master , and other two > > machines as slaves . Total of three datanodes . start-all.sh successfully > > start all daemons on all required nodes . > > But is seems , that only the datanode running locally on my machine is > > executing the whole job , the rest two slaves are starving for the > > connection with the masters. Their tasktracker logs reads (same on both > > slaves ): > > > > 2011-08-09 07:09:54,099 INFO org.apache.hadoop.ipc.Server: IPC Server > > Responder: starting > > 2011-08-09 07:09:54,100 INFO org.apache.hadoop.ipc.Server: IPC Server > > listener on 37874: starting > > 2011-08-09 07:09:54,103 INFO org.apache.hadoop.ipc.Server: IPC Server > > handler 0 on 37874: starting > > 2011-08-09 07:09:54,104 INFO org.apache.hadoop.ipc.Server: IPC Server > > handler 1 on 37874: starting > > 2011-08-09 07:09:54,104 INFO org.apache.hadoop.ipc.Server: IPC Server > > handler 2 on 37874: starting > > 2011-08-09 07:09:54,105 INFO org.apache.hadoop.ipc.Server: IPC Server > > handler 3 on 37874: starting > > 2011-08-09 07:09:54,105 INFO org.apache.hadoop.mapred.TaskTracker: > > TaskTracker up at: localhost/127.0.0.1:37874 > > 2011-08-09 07:09:54,105 INFO org.apache.hadoop.mapred.TaskTracker: > > Starting tracker tracker_gislab-desktop:localhost/127.0.0.1:37874 > > 2011-08-09 07:09:55,145 INFO org.apache.hadoop.ipc.Client: Retrying > > connect to server: /10.14.11.32:9001. Already tried 0 time(s). > > 2011-08-09 07:09:56,146 INFO org.apache.hadoop.ipc.Client: Retrying > > connect to server: /10.14.11.32:9001. Already tried 1 time(s). > > 2011-08-09 07:09:57,147 INFO org.apache.hadoop.ipc.Client: Retrying > > connect to server: /10.14.11.32:9001. Already tried 2 time(s). > > 2011-08-09 07:09:58,148 INFO org.apache.hadoop.ipc.Client: Retrying > > connect to server: /10.14.11.32:9001. Already tried 3 time(s). > > 2011-08-09 07:09:59,149 INFO org.apache.hadoop.ipc.Client: Retrying > > connect to server: /10.14.11.32:9001. Already tried 4 time(s). > > 2011-08-09 07:10:00,150 INFO org.apache.hadoop.ipc.Client: Retrying > > connect to server: /10.14.11.32:9001. Already tried 5 time(s). > > 2011-08-09 07:10:01,151 INFO org.apache.hadoop.ipc.Client: Retrying > > connect to server: /10.14.11.32:9001. Already tried 6 time(s). > > 2011-08-09 07:10:02,151 INFO org.apache.hadoop.ipc.Client: Retrying > > connect to server: /10.14.11.32:9001. Already tried 7 time(s). > > 2011-08-09 07:10:03,152 INFO org.apache.hadoop.ipc.Client: Retrying > > connect to server: /10.14.11.32:9001. Already tried 8 time(s). > > 2011-08-09 07:10:04,153 INFO org.apache.hadoop.ipc.Client: Retrying > > connect to server: /10.14.11.32:9001. Already tried 9 time(s). > > 2011-08-09 07:10:04,156 INFO org.apache.hadoop.ipc.RPC: Server at > > /10.14.11.32:9001 not available yet, Zzzzz... > > 2011-08-09 07:10:06,158 INFO org.apache.hadoop.ipc.Client: Retrying > > connect to server: /10.14.11.32:9001. Already tried 0 time(s). > > 2011-08-09 07:10:07,159 INFO org.apache.hadoop.ipc.Client: Retrying > > connect to server: /10.14.11.32:9001. Already tried 1 time(s). > > > > .... and continues. I tried re-enable the ipv6 address , but in vain . > The > > data in HDFS is distributed on all datanodes though. This confirms its > not > > a network problem also . I can password-lessely ssh in all directions . > > > > Sir, please help . I shall be grateful to you. > > > > Abhishek > > Masters Student > > IIT Bombay > > INDIA > > > > > > -- > View this message in context: > http://old.nabble.com/slave-nodes-could-not-connect-to-Master-.-tp32223105p32240913.html > Sent from the Hadoop core-dev mailing list archive at Nabble.com. > >
