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Posted to common-user@hadoop.apache.org by da...@ontrenet.com on 2011/03/17 18:55:23 UTC

Heap/GC problem running one job

Hi,
  We have been trying to increase the heap used by Hadoop when running a
single, small job.
It complains that Java heap and GC memory has expired. Its a 64bit Fedora
14 with 8GB memory.

- Memory is not exhausted
- ulimits on files, descriptors, etc. are not exhausted.

What could be causing this?

thanks for any tips
Darren