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MapReduce >> mail # user >> Re: Expressions in MapReduce


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Re: Expressions in MapReduce
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
different story...

Marco
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
>
> http://www.unmeshasreeveni.blogspot.in/
>
>
>