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From ArunKumar <arunk...@gmail.com>
Subject Checksum error during trace generation using Rumen
Date Thu, 08 Dec 2011 06:34:43 GMT
Hi guys !

I was trying to generate job trace and topology trace.
I have hadoop set up for hduser at /usr/local/hadoop and ran wordcount
program as hduser .
I have mapreduce component set up in eclipse for user "arun".
I set for a configuration :
Class: org.apache.hadoop.tools.rumen.TraceBuilder
Args : /home/arun/Documents/jh.json  /home/arun/Documents/top.json 
/usr/local/hadoop/logs/history

When i run it  i get the following error even when i have given :
${HADOOP_HOME} chmod -R 777 /logs

11/12/08 11:55:17 WARN util.NativeCodeLoader: Unable to load native-hadoop
library for your platform... using builtin-java classes where applicable
11/12/08 11:55:18 WARN fs.FSInputChecker: Problem opening checksum file:
file:/usr/local/hadoop/logs/history/job_201109191122_0002_1316411924369_hduser_word+count.

Ignoring exception: java.io.EOFException
	at java.io.DataInputStream.readFully(DataInputStream.java:180)
	at java.io.DataInputStream.readFully(DataInputStream.java:152)
	at
org.apache.hadoop.fs.ChecksumFileSystem$ChecksumFSInputChecker.<init>(ChecksumFileSystem.java:145)
	at
org.apache.hadoop.fs.ChecksumFileSystem.open(ChecksumFileSystem.java:311)
	at org.apache.hadoop.fs.FileSystem.open(FileSystem.java:534)
	at
org.apache.hadoop.tools.rumen.PossiblyDecompressedInputStream.<init>(PossiblyDecompressedInputStream.java:42)
	at
org.apache.hadoop.tools.rumen.DefaultInputDemuxer.bindTo(DefaultInputDemuxer.java:42)
	at org.apache.hadoop.tools.rumen.TraceBuilder.run(TraceBuilder.java:225)
	at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:69)
	at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:83)
	at org.apache.hadoop.tools.rumen.TraceBuilder.main(TraceBuilder.java:142)

Any help ?
Arun

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