Pig has multi-query execution optimization built-in. If you compute
multiple relations in your script that share parent relations, those
parent relations will be computed only once. You don't have to do
anything to make that happen.
If you prefer to handle your own caching, you would have to handl
Default loader is PigStorage which takes '\t' as delimiter. In your
2nd example, you need to explicitly specify comma as a delimiter (load
'foo' using PigStorage(',') as ...)
Sent from my iPhone
On Oct 7, 2012, at 12:00 PM, yonghu wrote:
> Dear all,
>
> When I load the data stored in txt file i
