AFAIK, this is not on the roadmap.
The problem is that it doesn't get much improvement for over window
aggregates.
If we support two-phase for over window aggregate, the local over operator
doesn't reduce any data,
it has to emit the same number of records it received, and can't reduce
pressure of
Jark,
thanks for the reply. Do you know whether it's on the roadmap or what's the
plan?
On Mon, Jun 22, 2020 at 9:36 PM Jark Wu wrote:
> Hi Fanbin,
>
> Currently, over window aggregation doesn't support two-phase optimization.
>
> Best,
> Jark
>
> On Tue, 23 Jun 2020 at 12:14, Fanbin Bu wrote:
Hi Fanbin,
Currently, over window aggregation doesn't support two-phase optimization.
Best,
Jark
On Tue, 23 Jun 2020 at 12:14, Fanbin Bu wrote:
> Hi,
>
> Does over window aggregation support two-phase mode?
>
> https://ci.apache.org/projects/flink/flink-docs-stable/dev/table/config.html#table-
Hi,
Does over window aggregation support two-phase mode?
https://ci.apache.org/projects/flink/flink-docs-stable/dev/table/config.html#table-optimizer-agg-phase-strategy
SELECT
user_id
, event_time
, listagg(event_type, '*') over w as names
FROM table
WINDOW w AS
( PARTITION BY user_id
ORD
