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MapReduce, mail # user - Out of memory (heap space) errors on job tracker

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Re: Out of memory (heap space) errors on job tracker
David Rosenstrauch 2012-06-12, 21:22
On 06/10/2012 08:39 PM, Arun C Murthy wrote:
> Harsh - I'd be inclined to think it's worse than just setting mapreduce.jobtracker.completeuserjobs.maximum - the only case this would solve is if a single user submitted 25 *large* jobs (in terms of tasks) over a single 24-hr window.

That's actually the situation we have - one user, submitting multiple
jobs, each with several thousand map steps.

I'll give that setting a shot and see if it clears it up.