Hi,

lets say I have a large tuple or a bag and I want to see if one of the
fields match a string. How would one do that?

Similarly how do you apply a function to all the fields in a tuple?

Thanks,

Fabian

Write a UDF that takes tuples/bag as input. Then do whatever processing you
want to do with the values inside the bag/tuple. Look how COUNT/SUM UDF is
written, you will get better picture.

Thanks,
Praveenesh

On Fri, May 25, 2012 at 3:17 PM, Fabian Alenius <[EMAIL PROTECTED]>wrote:

> Hi,
>
> lets say I have a large tuple or a bag and I want to see if one of the
> fields match a string. How would one do that?
>
> Similarly how do you apply a function to all the fields in a tuple?
>
> Thanks,
>
> Fabian
>

Hey Fabian,

You can try this:

inputData = LOAD 'input';

grouped = GROUP inputData BY $0;

result = FOREACH grouped {
                filtered = FILTER inputData BY $1 == 'mystring';
                GENERATE group, ( (COUNT(filtered) > 0) ? 'true' :
'false' ) AS StringExists;
}

Not sure whether it is the simplest or fastest way though, but it
works in my local mode with little data.

Ruslan

On Fri, May 25, 2012 at 1:47 PM, Fabian Alenius
<[EMAIL PROTECTED]> wrote:
> Hi,
>
> lets say I have a large tuple or a bag and I want to see if one of the
> fields match a string. How would one do that?
>
> Similarly how do you apply a function to all the fields in a tuple?
>
> Thanks,
>
> Fabian