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From Harsh J <ha...@cloudera.com>
Subject Re: Hadoop failing jobs non zero exit status 7
Date Thu, 13 Sep 2012 12:52:35 GMT
No idea if this is MapR specific, but looks like your
mapred.child.java.opts (or map/reduce specific opts) may be incorrect
for the failing jobs. Check its values up in its job.xml.

For MapR specific issues, contact MapR directly.

On Thu, Sep 13, 2012 at 6:08 PM, Robin Verlangen <robin@us2.nl> wrote:
> Hi there,
>
> Today we started deploying Mapr M3 into production. However we're having
> problems completing jobs. During a typical job the job return this:
>
> 12/09/11 16:33:20 INFO mapred.JobClient: Task Id :
> attempt_201209111629_0002_r_000001_2, Status : FAILED on node
> cl004.flxviz.com
> java.lang.Throwable: Child Error
>         at org.apache.hadoop.mapred.TaskRunner.run(TaskRunner.java:267)
> Caused by: java.io.IOException: Task process exit with nonzero status of 7.
>         at org.apache.hadoop.mapred.TaskRunner.run(TaskRunner.java:254)
> 12/09/11 16:33:20 WARN mapred.JobClient: Error reading task output
> http://cl004.flxviz.com:50060/tasklog?plaintext=true&attemptid=attempt_201209111629_0002_r_000001_2&filter=stdout
> 12/09/11 16:33:20 WARN mapred.JobClient: Error reading task output
> http://cl004.flxviz.com:50060/tasklog?plaintext=true&attemptid=attempt_201209111629_0002_r_000001_2&filter=stderr*
>
> When I get the logs of the tasktracker, I see things like:
>
> 2012-09-11 16:32:43,204 INFO org.apache.hadoop.mapred.TaskInProgress: Error
> from attempt_201209111629_0002_r_000002_1: java.lang.Throwable: Child Error
>         at org.apache.hadoop.mapred.TaskRunner.run(TaskRunner.java:267)
> Caused by: java.io.IOException: Task process exit with nonzero status of 7.
>         at org.apache.hadoop.mapred.TaskRunner.run(TaskRunner.java:254) on
> tasktracker tracker_cl004.flxviz.com:localhost/127.0.0.1:53126
> 2012-09-11 16:32:46,234 INFO org.apache.hadoop.mapred.JobTracker: Removing
> task 'attempt_201209111629_0002_r_000002_1'
> 2012-09-11 16:32:46,512 INFO org.apache.hadoop.mapred.JobTracker: Adding
> task (JOB_SETUP) 'attempt_201209111629_0002_m_000011_2' to tip
> task_201209111629_0002_m_000011, for tracker
> 'tracker_cl003.flxviz.com:localhost/127.0.0.1:42339'
> 2012-09-11 16:32:48,027 INFO org.apache.hadoop.mapred.TaskInProgress: Error
> from attempt_201209111629_0002_m_000011_2: java.lang.Throwable: Child Error
>         at org.apache.hadoop.mapred.TaskRunner.run(TaskRunner.java:267)
> Caused by: java.io.IOException: Task process exit with nonzero status of 7.
>         at org.apache.hadoop.mapred.TaskRunner.run(TaskRunner.java:254) on
> tasktracker tracker_cl003.flxviz.com:localhost/127.0.0.1:42339
> 2012-09-11 16:32:51,055 INFO org.apache.hadoop.mapred.JobTracker: Adding
> task (JOB_SETUP) 'attempt_201209111629_0002_r_000002_2' to tip
> task_201209111629_0002_r_000002, for tracker
> 'tracker_cl003.flxviz.com:localhost/127.0.0.1:42339'
> 2012-09-11 16:32:51,056 INFO org.apache.hadoop.mapred.JobTracker: Removing
> task 'attempt_201209111629_0002_m_000011_2'
> 2012-09-11 16:32:51,359 INFO org.apache.hadoop.mapred.TaskInProgress: Error
> from attempt_201209111629_0002_r_000002_2: java.lang.Throwable: Child Error*
>
> Does anyone have a clue where to start? It doesn't seem to be a MapR
> specific problem, that's why I post this in the hadoop mailinglist.
>
> Some additional information:
> OS: Centos 6.3 x64
> 16GB Ram
> 2x quad core processor
> 12x 1TB harddrive
>
> Best regards,
>
> Robin Verlangen
> Software engineer
>
> W http://www.robinverlangen.nl
> E robin@us2.nl
>
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-- 
Harsh J

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