-Re: Expressions in MapReduce
Marco Shaw 2014-01-12, 15:28
I'm not sure on your exact details, but it is always possible to do just
about anything with your MR logic.
Now, to suggests that there may or may not be a performance hit is a
On Sat, Jan 11, 2014 at 2:45 PM, unmesha sreeveni <[EMAIL PROTECTED]>wrote:
> Are we able to do expresions in Mapreduce
> Say if i am having a csv file . which has 2 columns.
> The user is giving an expresion
> col1 + col2 = col3
> Are we able to do this?
> And when again the user wants col1 - col2 = col4
> Can we do it in the same mapreduce (dynamic change of expressions)
> *Thanks & Regards*
> Unmesha Sreeveni U.B
> Junior Developer