hadoop-common-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Moritz Krog <moritzk...@googlemail.com>
Subject Single Node with multiple mappers?
Date Fri, 16 Jul 2010 09:03:19 GMT
Hi everyone,

I was curious if there is any option to use Hadoop in single node mode
in a way, that enables the process to use more system ressources.
Right now, Hadoop uses one mapper and one reducer, leaving my i7 with
about 20% CPU usage (1 core for Hadoop, .5 cores for my OS) basically
Raising the number of map tasks doesn't seem to do much, as this
parameter seems to more of a hint anyway. Still, I have lots of CPU
time and RAM left. Any hints on how to use them?

thanks in advance,

View raw message