ke the mapPartitions can be implemented as a SELECT + GROUP BY,
> where GROUP BY is to partition the data, then per partition computation is
> handled by the SELECT.
>
> -Rui
>
> On Thu, Mar 4, 2021 at 11:56 AM Debajyoti Roy wrote:
>
> > Thanks again Julian.
> >
> >
on sorted or
> partitioned data). mapPartitions is in this category. Of course a physical
> implementation of one of SQL’s logical operators might use mapPartitions.
>
> Julian
>
>
>
>
>
> > On Mar 4, 2021, at 10:44 AM, Debajyoti Roy wrote:
> >
> > Thanks
) FROM my_twitter_data...
So what is a better usage example for mapPartitions expressed as SQL ? I am
really struggling with that part and I agree with Julian that is the key.
Regards,
Debajyoti Roy
On Thu, Mar 4, 2021 at 12:01 AM Julian Hyde wrote:
> I searched for mapPartitions and fla
, (disclaimer: I am new to Calcite)
Debajyoti Roy
