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.
