On Jun 20, 2011, at 12:24 PM, praveen.pe...@nokia.com
praveen.pe...@nokia.com wrote:
Hi there,
I know client can send mapred.reduce.tasks to specify no. of reduce tasks
and hadoop honours it but mapred.map.tasks is not honoured by Hadoop. Is
there any way to control number of map tasks?
On 06/20/2011 03:24 PM, praveen.pe...@nokia.com wrote:
Hi there, I know client can send mapred.reduce.tasks to specify no.
of reduce tasks and hadoop honours it but mapred.map.tasks is not
honoured by Hadoop. Is there any way to control number of map tasks?
What I noticed is that Hadoop is
at the default mapred-site.xml for your version).
Matt
-Original Message-
From: praveen.pe...@nokia.com [mailto:praveen.pe...@nokia.com]
Sent: Monday, June 20, 2011 2:44 PM
To: mapreduce-user@hadoop.apache.org
Subject: RE: controlling no. of mapper tasks
Hi David,
I think Hadoop is looking
: controlling no. of
mapper tasks
On 06/20/2011 03:24 PM, praveen.pe...@nokia.com wrote:
Hi there, I know client can send mapred.reduce.tasks to specify
no. of reduce tasks and hadoop honours it but mapred.map.tasks is
not honoured by Hadoop. Is there any way to control number of map
tasks? What I
...@nokia.com [mailto:praveen.pe...@nokia.com]
Sent: Monday, June 20, 2011 3:13 PM
To: mapreduce-user@hadoop.apache.org
Subject: RE: controlling no. of mapper tasks
Hi David,
Thanks for the response. I didn't specify anything for no. of concurrent
mappers but I do see that it shows as 10 on 50030
On Mon, Jun 20, 2011 at 4:13 PM, praveen.pe...@nokia.com wrote:
Hi David,
Thanks for the response. I didn't specify anything for no. of concurrent
mappers but I do see that it shows as 10 on 50030 (for 5 node cluster). So I
believe hadoop is defaulting to no. of cores in the cluster which is
