-To: user@hadoop.apache.org
Subject: Re: MRBench Maps strange behaviour
Hi Hemanth,
Thanks for the reply.
Can you tell me how can I calculate or ensure from the counters what should
be the exact number of Maps?
Thanks,
Gaurav Dasgupta
On Wed, Aug 29, 2012 at 11:26 AM, Hemanth Yamijala yhema
Then the question arises how MRBench is using the parameters :
According to the mail he send... he is running MRBench with the following
parameter:
*
hadoop jar /usr/lib/hadoop-0.20/hadoop-test.jar mrbench -maps 10 -reduces 10
*
I guess he is assuming the MRbench to launch 10 mappers and 10
Hi,
The number of maps specified to any map reduce program (including
those part of MRBench) is generally only a hint, and the actual number
of maps will be influenced in typical cases by the amount of data
being processed. You can take a look at this wiki link to understand
more:
