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From Radim Kolar <...@filez.com>
Subject Re: JVM vs container memory configs
Date Sat, 04 May 2013 21:52:30 GMT

While looking into MAPREDUCE-5207 (adding defaults for
mapreduce.{map|reduce}.memory.mb), I was wondering how much headroom
should be left on top of mapred.child.java.opts (or other similar JVM opts) for
the container memory itself?

I would like to have separated java option settings for map/reduce parts. Something like
mapred.map.child.java.opts mapred.reduce.child.java.opts.


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