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From Adarsh Sharma <adarsh.sha...@orkash.com>
Subject Reduce Failed at Tasktrackers
Date Wed, 08 Dec 2010 07:14:25 GMT
Dear all,

Sometimes things arise that made you puzzled and have no guess waht to do.
Same is the case with me . I run several jobs in Hadoop and aware of 
common Exceptions but this time I don't what is the root cause of this 
problem.
I configured and load data properly in a Hadoop Cluster of 10 nodes.

I work on Ubuntu 10.4 , Hadoop-0.20.2 and Java1.6.0.20 and when I ran i 
wordco2010-12-08 11:57:35,059 ERROR 
org.apache.hadoop.mapred.TaskTracker: Caught exception: 
java.io.IOException: Call to /192.168.0.132:54311 failed on local 
exception: java.io.EOFException
    at org.apache.hadoop.ipc.Client.wrapException(Client.java:775)
    at org.apache.hadoop.ipc.Client.call(Client.java:743)
    at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:220)
    at org.apache.hadoop.mapred.$Proxy4.heartbeat(Unknown Source)
    at 
org.apache.hadoop.mapred.TaskTracker.transmitHeartBeat(TaskTracker.java:1215)
    at 
org.apache.hadoop.mapred.TaskTracker.offerService(TaskTracker.java:1037)
    at org.apache.hadoop.mapred.TaskTracker.run(TaskTracker.java:1720)
    at org.apache.hadoop.mapred.TaskTracker.main(TaskTracker.java:2833)
Caused by: java.io.EOFException
    at java.io.DataInputStream.readInt(DataInputStream.java:375)
    at 
org.apache.hadoop.ipc.Client$Connection.receiveResponse(Client.java:501)
    at org.apache.hadoop.ipc.Client$Connection.run(Client.java:446)unt 
job on 1GB file i faces this exception in Tasktracker Logs :

I don't know what to do.
I attached my command-line output and one of my tasktracker logs.

Thanks & Regards

Adarsh Sharma

Thank



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