It sounds like
https://solr.apache.org/guide/solr/latest/query-guide/join-query-parser.html#joining-across-single-shard-collections
right?

On Thu, Sep 14, 2023 at 1:46 AM Walter Underwood <wun...@wunderwood.org>
wrote:

> As I said, these are two different collections. —wunder
>
> > On Sep 13, 2023, at 12:08 PM, Mikhail Khludnev <m...@apache.org> wrote:
> >
> > Hello Walter.
> > I think the former has a place - join picks local replica or fail. I
> don't
> > think join query (unless crossCollection) bothers about shard preference.
> >
> > On Wed, Sep 13, 2023 at 7:21 PM Walter Underwood <wun...@wunderwood.org>
> > wrote:
> >
> >> We have a sharded collection that joins with a non-sharded collection.
> The
> >> non-sharded collection has a replica on every node. Does the join
> >> automatically choose the local replica or do we need to pass in a shard
> >> preference param?
> >>
> >> wunder
> >> Walter Underwood
> >> wun...@wunderwood.org
> >> http://observer.wunderwood.org/  (my blog)
> >>
> >>
> >
> > --
> > Sincerely yours
> > Mikhail Khludnev
>
>

-- 
Sincerely yours
Mikhail Khludnev

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