That is right. Sub-queries are executed sequentially as of Kylin 2.0.

On Fri, Jul 28, 2017 at 2:16 AM, Alexander Sterligov <sterligo...@joom.it>
wrote:

> Hello!
>
> My fact table has 12 boolean fields and user id. I need to count distinct
> users with has certain combinations of these flags. So I do several
> sub-queries and union all of them.
> This query may take up to one minute and it doesn't depend on number of
> regionservers in hbase.
>
> It looks like sub-queries are executed sequentially. Or maybe segment
> pruning by dictionary is done sequentially.
>
> Am I right?
>
> Best regards,
> Alexander
>

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