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From Sudharsan Sampath <sudharsan.samp...@ericsson.com>
Subject Mapreduce program reports child error
Date Tue, 03 May 2011 07:06:48 GMT

Hi,

Could anyone point me to a summary on why this error would occur?

java.lang.Throwable: Child Error
at org.apache.hadoop.mapred.TaskRunner.run(TaskRunner.java:471)
Caused by: java.io.IOException: Task process exit with nonzero status of 1.
at org.apache.hadoop.mapred.TaskRunner.run(TaskRunner.java:458)

I know of the following two reasons.

1) Insufficient space in the logs directory
2) ulimit threshold that causes insuffucient allocation of memory.

Thanks
Sudharsan S



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