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Hadoop, mail # user - Multi-threaded map task


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Mark Olimpiati 2013-01-14, 05:57
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Re: Multi-threaded map task
Nitin Pawar 2013-01-14, 06:34
Thats because its distributed processing framework over network
On Jan 14, 2013 11:27 AM, "Mark Olimpiati" <[EMAIL PROTECTED]> wrote:

> Hi, this is a simple question, but why wasn't map or reduce tasks
> programmed to be multi-threaded ? ie. instead of spawning 6 map tasks for 6
> cores, run one map task with 6 parallel threads.
>
> In fact I tried this myself, but turns that threading is not helping as it
> would be in regular java programs for some reason .. any feedback on this
> topic?
>
> Thanks,
> Mark
>
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Mark Olimpiati 2013-01-14, 07:22
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Bertrand Dechoux 2013-01-14, 08:06
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Mark Olimpiati 2013-01-14, 20:23
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Mark Olimpiati 2013-01-14, 20:44