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From "toughman (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAPREDUCE-4003) log.index (No such file or directory) AND Task process exit with nonzero status of 126
Date Tue, 13 Mar 2012 13:43:40 GMT
log.index (No such file or directory) AND Task process exit with nonzero status of 126

                 Key: MAPREDUCE-4003
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4003
             Project: Hadoop Map/Reduce
          Issue Type: Bug
          Components: task-controller, tasktracker
         Environment: hadoop version -------Hadoop 0.20.2-cdh3u3
uname -a: Linux xxxx 2.6.18- #1 SMP Tue Oct 26 20:15:18 EDT 2010 i686 i686
i386 GNU/Linux

<property>  <name>mapred.local.dir</name>  <value>/var/tmp/mapred/local</value>
<property>  <name>mapred.system.dir</name>  <value>/mapred/system</value>
            Reporter: toughman

hello´╝îI have dwelled on this hadoop(cdhu3) problem for 2 days,I have tried every google
method.This is the issue: when ran hadoop example "wordcount" ,the tasktracker's log in one
slave node presented such errors

 1.WARN org.apache.hadoop.mapred.DefaultTaskController: Task wrapper stderr: bash: /var/tmp/mapred/local/ttprivate/taskTracker/hdfs/jobcache/job_201203131751_0003/attempt_201203131751_0003_m_000006_0/taskjvm.sh:
Permission denied

2.WARN org.apache.hadoop.mapred.TaskRunner: attempt_201203131751_0003_m_000006_0 : Child Error
java.io.IOException: Task process exit with nonzero status of 126.

3.WARN org.apache.hadoop.mapred.TaskLog: Failed to retrieve stdout log for task: attempt_201203131751_0003_m_000003_0
java.io.FileNotFoundException: /usr/lib/hadoop-0.20/logs/userlogs/job_201203131751_0003/attempt_201203131751_0003_m_000003_0/log.index
(No such file or directory)

I could not find similar issues in google,just got some posts seem a little relevant ,which
suggest: A. the ulimit of hadoop user----but my ulimit is set large enough for this bundled
example;B. the memory used by jvm,but my jvm only use Xmx200m,too small to exceed the limit
of my machine ;C.the privilege of the mapred.local.dir and logs dir----I set them by "chmod
777";D .the disk space is full----there are enough space for hadoop in my log directory and

Thanks for you all,I am really at my wit's end,I have spend days on it. I really appreciate
any light!

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