Keith Wiley 2014-01-21, 19:28
java8964 2014-01-21, 19:43
-Re: Is perfect control over mapper num AND split distribution possible?
Keith Wiley 2014-01-21, 20:42
I'll look it up. Thanks.
On Jan 21, 2014, at 11:43 , java8964 wrote:
> You cannot use hadoop "NLineInputFormat"?
> If you generate 100 lines of text file, by default, one line will trigger one mapper task.
> As long as you have 100 task slot available, you will get 100 mapper running concurrently.
> You want perfect control over mapper num? NLineInputFormat is designed for your purpose.
Keith Wiley [EMAIL PROTECTED] keithwiley.com music.keithwiley.com
"What I primarily learned in grad school is how much I *don't* know.
Consequently, I left grad school with a higher ignorance to knowledge ratio than
when I entered."
-- Keith Wiley
Keith Wiley 2014-01-21, 21:42