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From "Arun C Murthy (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-1739) ConnectException in TaskTracker Child
Date Wed, 22 Aug 2007 18:44:30 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-1739?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12521888
] 

Arun C Murthy commented on HADOOP-1739:
---------------------------------------

Srikanth, could you give this patch a try and let us know? Thanks!

> ConnectException in TaskTracker Child
> -------------------------------------
>
>                 Key: HADOOP-1739
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1739
>             Project: Hadoop
>          Issue Type: Bug
>          Components: mapred
>         Environment: Version: 0.15.0-dev, r565628
> Compiled: Tue Aug 14 20:55:37 UTC 2007 by hadoopqa
> 1400 nodes
>            Reporter: Srikanth Kakani
>            Assignee: Arun C Murthy
>            Priority: Blocker
>         Attachments: HADOOP-1739_1_20070823.patch
>
>
> Steps to Reproduce:
> I had 11000 mappers and 2700 reducers in a job and most failures correspond to the following
logs:
> Stderr:
> Exception in thread "main" java.net.ConnectException: Connection refused
> 	at java.net.PlainSocketImpl.socketConnect(Native Method)
> 	at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
> 	at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:193)
> 	at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
> 	at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
> 	at java.net.Socket.connect(Socket.java:519)
> 	at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:150)
> 	at org.apache.hadoop.ipc.Client.getConnection(Client.java:530)
> 	at org.apache.hadoop.ipc.Client.call(Client.java:459)
> 	at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:165)
> 	at org.apache.hadoop.mapred.$Proxy0.getProtocolVersion(Unknown Source)
> 	at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:248)
> 	at org.apache.hadoop.mapred.TaskTracker$Child.main(TaskTracker.java:1781)
> Syslog:
> 2007-08-19 18:45:07,490 INFO org.apache.hadoop.ipc.Client: Retrying connect to server:
0.0.0.0/0.0.0.0:50051. Already tried 1 time(s).
> 2007-08-19 18:45:08,494 INFO org.apache.hadoop.ipc.Client: Retrying connect to server:
0.0.0.0/0.0.0.0:50051. Already tried 2 time(s).
> 2007-08-19 18:45:09,497 INFO org.apache.hadoop.ipc.Client: Retrying connect to server:
0.0.0.0/0.0.0.0:50051. Already tried 3 time(s).
> 2007-08-19 18:45:10,500 INFO org.apache.hadoop.ipc.Client: Retrying connect to server:
0.0.0.0/0.0.0.0:50051. Already tried 4 time(s).
> 2007-08-19 18:45:11,503 INFO org.apache.hadoop.ipc.Client: Retrying connect to server:
0.0.0.0/0.0.0.0:50051. Already tried 5 time(s).
> 2007-08-19 18:45:12,506 INFO org.apache.hadoop.ipc.Client: Retrying connect to server:
0.0.0.0/0.0.0.0:50051. Already tried 6 time(s).
> 2007-08-19 18:45:13,508 INFO org.apache.hadoop.ipc.Client: Retrying connect to server:
0.0.0.0/0.0.0.0:50051. Already tried 7 time(s).
> 2007-08-19 18:45:14,511 INFO org.apache.hadoop.ipc.Client: Retrying connect to server:
0.0.0.0/0.0.0.0:50051. Already tried 8 time(s).
> 2007-08-19 18:45:15,512 INFO org.apache.hadoop.ipc.Client: Retrying connect to server:
0.0.0.0/0.0.0.0:50051. Already tried 9 time(s).
> 2007-08-19 18:45:16,515 INFO org.apache.hadoop.ipc.Client: Retrying connect to server:
0.0.0.0/0.0.0.0:50051. Already tried 10 time(s)

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