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Pig >> mail # user >> Strange behaviour when using FLATTEN

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Re: Strange behaviour when using FLATTEN
this is a very good explanation of flatten:


On Wed, Apr 11, 2012 at 9:46 AM, James Newhaven <[EMAIL PROTECTED]>wrote:

> Hi,
> Sorry, this is a PIG newbie question...
> When I use FLATTEN, I don't understand the structure of the relation that
> is returned.
> For example, the following relation A is the result of using flatten:
> A {null::group: chararray,null::tagcount: long}
> I'm not really sure why there is "null" prefixing group and tagcount. Can
> anyone help explain what this means?
> Thanks,
> James