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From Alexei Scherbakov <alexey.scherbak...@gmail.com>
Subject Re: Allow distributed SQL query execution over explicit set of partitions
Date Mon, 23 Jan 2017 19:16:51 GMT
Dmitriy,

This still can make sense for some scenarios, because we could limit number
of initial map requests reducing overall query overhead.

Are you still sure we need to throw an exception ?

2017-01-23 1:49 GMT+03:00 Dmitriy Setrakyan <dsetrakyan@apache.org>:

> On Sun, Jan 22, 2017 at 5:06 AM, Alexei Scherbakov <
> alexey.scherbakoff@gmail.com> wrote:
>
> > Yes, it will be possible because distributed joins are executed using
> > broadcast queries.
> >
> >
> In this case why even bother supporting non-collocated joins? We need to
> throw an exception in this case.
>
> 2017-01-22 15:49 GMT+03:00 Dmitriy Setrakyan <dsetrakyan@apache.org>:
> >
> > > On Sun, Jan 22, 2017 at 4:46 AM, Alexei Scherbakov <
> > > alexey.scherbakoff@gmail.com> wrote:
> > >
> > > > Dmitriy,
> > > >
> > > > ScanQueries currently support only one partition. I will extend it to
> > > > support multiple partitions.
> > > >
> > > > For distributed joins partitions will only be applied on "map" query
> > > step.
> > > >
> > >
> > > Will it still be possible to get data from the partitions that were not
> > > specified?
> > >
> >
> >
> >
> > --
> >
> > Best regards,
> > Alexei Scherbakov
> >
>



-- 

Best regards,
Alexei Scherbakov

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