Mark Kerzner 2012-11-13, 15:25
Serge Blazhiyevskyy 2012-11-13, 15:27
Jay Vyas 2012-11-13, 15:27
Mark Kerzner 2012-11-13, 15:50
On Tue, Nov 13, 2012 at 10:18 AM, Serge Blazhiyevskyy <
[EMAIL PROTECTED]> wrote:
> What hadoop version are we talking about?
> From: Mark Kerzner <[EMAIL PROTECTED]<mailto:
> [EMAIL PROTECTED]>>
> Reply-To: "[EMAIL PROTECTED]<mailto:[EMAIL PROTECTED]>" <
> [EMAIL PROTECTED]<mailto:[EMAIL PROTECTED]>>
> Date: Tuesday, November 13, 2012 5:16 PM
> To: Hadoop User <[EMAIL PROTECTED]<mailto:[EMAIL PROTECTED]>>
> Subject: mapred.tasktracker.map.tasks.maximum
> I have a cluster with 4 nodes and 32 many cores on each. My default value
> for the maximum number of mappers per slot is 1:
> <!-- see other kb entry about this one. -->
> (which I think is wrong).
> Howeve, when sizable jobs run, I see 65 mappers working, so it seems that
> it does create more than 1 mapper per node.
> Questions: what maximum number of mappers would be appropriate in this
> situation? Is that the right way to set them?
> Thank you. Sincerely,
Kartashov, Andy 2012-11-13, 15:26
Mark Kerzner 2012-11-13, 15:52
Mark Kerzner 2012-11-13, 15:16