Hi, Just want to ask , how one can control the number of mappers for a given job. I have a 2 cpu with 2 cores machine i.e 4 cores having Red Hat 4.1.2-48. I have a sqoop export job, with Input size :320,139,321Bytes Block size : 4096Bytes
It is creating 3 map tasks for this export job. When I am passing --num-mappers 4, still it is creating 3 splits and assigning 3 mappers to it. Console out put can be viewed from :http://pastebin.com/KVPp5Zjp I went through the code for CombineFileInputFormat.java , but I am not able to figure out , the reason for this behaviour. Can you help in this? Thanks & Regards, Sonal Kumar
