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Pig, mail # user - Synthetic keys

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Re: Synthetic keys
Mehmet Tepedelenlioglu 2013-05-24, 16:21
Thanks, but is there a map-side cross? The usual cross seems to have a
bug. I sent an example of how to replicate this bug.

On 5/24/13 9:15 AM, "Jonathan Coveney" <[EMAIL PROTECTED]> wrote:

>You can do this, but pig has a CROSS keyword that you can use.
>2013/5/23 Mehmet Tepedelenlioglu <[EMAIL PROTECTED]>
>> Hi,
>> I am using this:
>> x = join a by 1, b by 1  using 'replicated';
>> with the hope that it generates some synthetic key '1' on both a and b
>> joins it on that key, thereby, in this case, doing a clean map side
>> of
>> a and b with no schema changes (exactly the way a cross would work). It
>> seems to be working, but since I just tried it and it worked, I am not
>> if there is anything in there I should be aware of. Does anyone know?
>> Thanks,
>> Mehmet