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From Harsh J <ha...@cloudera.com>
Subject Re: slave nodes could not connect to Master .
Date Tue, 09 Aug 2011 02:52:21 GMT
Perhaps the port 9001 (via mapred.job.tracker) for JobTracker is
firewalled away on the master machine. Or is down.

On Tue, Aug 9, 2011 at 7:46 AM, sachinites <sachinites@gmail.com> 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-.-tp32223105p32223105.html
> Sent from the Hadoop core-dev mailing list archive at Nabble.com.
>
>



-- 
Harsh J

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