maria-discuss team mailing list archive

[Dan Hill <quietgolfer@xxxxxxxxx>]

Thanks for the quick reply!

On Sat, Jul 4, 2020 at 1:02 AM Sergei Golubchik <serg@xxxxxxxxxxx> wrote:

> Hi, Dan!
>
> On Jul 03, Dan Hill wrote:
> > Hi!
> >
> > I'm evaluating if I can use Maria's JDBC connector to join tables from
> > Apache Pinot (they have a prototype jdbc connector).
> >
> > When external tables are used (like JDBC or FederatedX), are group bys
> > pushed down or do these connectors return the raw rows to Maria?  I
> > see comments about lack of filter pushdowns for FederatedX.  I
> > wouldn't the raw level data coming back from Pinot (there are too many
> > rows to be performant).
>
> No, at the moment neither FederatedX nor CONNECT engines
> support group by pushdown.
>
> The server supports it, some engines support it (namely, ColumnStore and
> Spider), but not all.
>
> Regards,
> Sergei
> VP of MariaDB Server Engineering
> and security@xxxxxxxxxxx
>