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From Rajashree Bagal <rajashreeba...@gmail.com>
Subject regarding hadoop
Date Tue, 09 Apr 2013 09:18:41 GMT
we are getting the following error/warning while running wordcount program
on hadoop 2 node cluster with one master and one slave...


arpit@arpit:~/hadoop-1.0.3$ bin/hadoop jar hadoop-examples-1.0.3.jar
wordcount /Input /Output
WARNING: org.apache.hadoop.metrics.jvm.EventCounter is deprecated. Please
use org.apache.hadoop.log.metrics.EventCounter in all the log4j.properties
files.
13/04/09 13:51:56 INFO input.FileInputFormat: Total input paths to process
: 3
13/04/09 13:51:56 INFO util.NativeCodeLoader: Loaded the native-hadoop
library
13/04/09 13:51:56 WARN snappy.LoadSnappy: Snappy native library not loaded
13/04/09 13:51:57 INFO mapred.JobClient: Running job: job_201304091351_0001
13/04/09 13:51:58 INFO mapred.JobClient:  map 0% reduce 0%
13/04/09 13:52:13 INFO mapred.JobClient:  map 66% reduce 0%
13/04/09 13:52:16 INFO mapred.JobClient:  map 100% reduce 0%
13/04/09 13:52:22 INFO mapred.JobClient:  map 100% reduce 22%
13/04/09 13:59:47 INFO mapred.JobClient:  map 100% reduce 0%
13/04/09 13:59:52 INFO mapred.JobClient: Task Id :
attempt_201304091351_0001_r_000000_0, Status : FAILED
Shuffle Error: Exceeded MAX_FAILED_UNIQUE_FETCHES; bailing-out.
13/04/09 13:59:52 WARN mapred.JobClient: Error reading task outputhadoop
13/04/09 13:59:52 WARN mapred.JobClient: Error reading task outputhadoop
13/04/09 14:00:05 INFO mapred.JobClient:  map 100% reduce 11%

what can be the possible solution.... is it the fault of setup or anything
else....
please help

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