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From chandra <chandravadana.selvach...@cognizant.com>
Subject too-many fetch failures
Date Wed, 01 Oct 2008 06:37:14 GMT

hi all...

i'm using hadoop-17.2 version.. i'm tryin to cluster 3 nodes.
when i run applns, map tasks gets over and reduce tasks just halts..
And i get this Too-many fetch failures..

[root@master hadoop-0.17.2.1]# bin/hadoop jar word/word.jar
org.myorg.WordCount input output2
08/10/01 10:56:26 INFO mapred.FileInputFormat: Total input paths to
process : 1008/10/01 10:56:26 INFO mapred.JobClient: Running job:
job_200810011054_0005
08/10/01 10:56:27 INFO mapred.JobClient:  map 0% reduce 0%
08/10/01 10:56:31 INFO mapred.JobClient:  map 40% reduce 0%
08/10/01 10:56:32 INFO mapred.JobClient:  map 60% reduce 0%
08/10/01 10:56:33 INFO mapred.JobClient:  map 100% reduce 0%
08/10/01 10:56:42 INFO mapred.JobClient:  map 100% reduce 16%
08/10/01 10:56:47 INFO mapred.JobClient:  map 100% reduce 20%
08/10/01 11:37:04 INFO mapred.JobClient:  map 89% reduce 20%
08/10/01 11:37:04 INFO mapred.JobClient: Task Id :
task_200810011054_0005_m_000005_0, Status : FAILED
Too many fetch-failures
08/10/01 11:37:04 WARN mapred.JobClient: Error reading task
outputhttp://localhost:50060/tasklog?
plaintext=true&taskid=task_200810011054_0005_m_000005_0&filter=stdout
08/10/01 11:37:04 WARN mapred.JobClient: Error reading task
outputhttp://localhost:50060/tasklog?
plaintext=true&taskid=task_200810011054_0005_m_000005_0&filter=stderr
08/10/01 11:37:06 INFO mapred.JobClient:  map 100% reduce 20%
08/10/01 11:37:14 INFO mapred.JobClient:  map 100% reduce 23%
08/10/01 11:44:34 INFO mapred.JobClient: Task Id :
task_200810011054_0005_m_000007_0, Status : FAILED
Too many fetch-failures
08/10/01 11:44:34 WARN mapred.JobClient: Error reading task
outputhttp://localhost:50060/tasklog?
plaintext=true&taskid=task_200810011054_0005_m_000007_0&filter=stdout
08/10/01 11:44:34 WARN mapred.JobClient: Error reading task
outputhttp://localhost:50060/tasklog?
plaintext=true&taskid=task_200810011054_0005_m_000007_0&filter=stderr
08/10/01 11:44:46 INFO mapred.JobClient:  map 100% reduce 26%
08/10/01 11:52:04 INFO mapred.JobClient: Task Id :
task_200810011054_0005_m_000004_0, Status : FAILED
Too many fetch-failures
08/10/01 11:52:04 WARN mapred.JobClient: Error reading task
outputhttp://localhost:50060/tasklog?
plaintext=true&taskid=task_200810011054_0005_m_000004_0&filter=stdout
08/10/01 11:52:04 WARN mapred.JobClient: Error reading task
outputhttp://localhost:50060/tasklog?
plaintext=true&taskid=task_200810011054_0005_m_000004_0&filter=stderr
08/10/01 11:52:06 INFO mapred.JobClient:  map 89% reduce 26%
08/10/01 11:52:07 INFO mapred.JobClient:  map 100% reduce 26%
08/10/01 11:52:22 INFO mapred.JobClient:  map 100% reduce 30%

i'm not sure where i went wrong..
kindly help in solving this..
-- 
Best Regards
S.Chandravadana

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