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From Devaraj K <deva...@apache.org>
Subject Re: yarn container memory setting
Date Tue, 22 Jul 2014 14:33:57 GMT
I assume you meant mapreduce.map.java.opts = -Xmx(0.8 *
mapreduce.map.memory.mb)M.



Here trying allocate this much memory for heap size. And we need to leave
the remaining memory for launching the Child container java process, native
memory, etc.


On Tue, Jul 22, 2014 at 2:14 AM, Chen Song <chen.song.82@gmail.com> wrote:

> I read a bit on documentation on yarn memory tuning and found that
>
> It is suggested to set mapreduce.map.java.opts = 0.8 *
> mapreduce.map.memory.mb.
>
> I am wondering why is 0.8, but not 0.9 or higher?
>
> --
> Chen Song
>
>


-- 


Thanks
Devaraj K

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