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From Dmitriy Setrakyan <dsetrak...@apache.org>
Subject Re: nested SQL sub-queries with non-collocated joins
Date Thu, 01 Jun 2017 19:50:13 GMT
On Thu, Jun 1, 2017 at 12:32 PM, Sergi Vladykin <sergi.vladykin@gmail.com>
wrote:

> I guess it must work the following way:
>
> If distributed joins are enabled we can try to prove that the subquery is
> collocated, if we can't then try to rewrite it, if we can't, then throw an
> exception.
>
> Still this can not be done 100% correct, probably we have to have some flag
> which allows to disable this subquery rewriting.
>

Sergi, but how do you explain to users what is supported and what is not?

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