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From Roy Smith <...@panix.com>
Subject Re: How does hadoop decide how many reducers to run?
Date Fri, 11 Jan 2013 23:53:00 GMT
On Jan 11, 2013, at 6:20 PM, Michael Segel wrote:

> Hi, 
> 
> First, not enough information. 
> 
> 1) EC2 got it. 
> 2) Which flavor of Hadoop? Is this EMR as well? 

Yes, EMR.  We're running AMI version 2.3.1, which includes hadoop 1.0.3.


> 3) How many slots did you configure in your mapred-site.xml?

Hmmm, no clue.  I've never even heard of that file.  We're using mrjob.  It may be that mrjob
is building a mapred-site.xml file for me and I never even see it?

---
Roy Smith
roy@panix.com




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