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MapReduce >> mail # user >> Re: Set the number of maps

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Re: Set the number of maps
Is the spelling of the option correct?

On Thu, Nov 1, 2012 at 6:43 AM, Cogan, Peter (Peter) <

> Hi
> I understand that the maximum number of concurrent map tasks is set
> by mapred.tasktracker.map.tasks.maximum  - however I wish to run with a
> smaller number of maps (am testing disk IO). I thought that I could set
> that within the main program using
> conf.set("mapred.tasktracker.map.tasks.maximuma", "4");
> to run with 4 maps – but that seems to have no impact. I know I could just
> change the mapred-site.xml and restart map reduce but that's kind of a
> pain. Can it be set from within the code?
> Thanks
> Peter