| From: | Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> |
|---|---|
| To: | Greg Nancarrow <gregn4422(at)gmail(dot)com> |
| Cc: | Dilip Kumar <dilipbalaut(at)gmail(dot)com>, Bharath Rupireddy <bharath(dot)rupireddyforpostgres(at)gmail(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Parallel INSERT (INTO ... SELECT ...) |
| Date: | 2020-10-11 02:05:26 |
| Message-ID: | CAA4eK1Jj_ORex3S-wfn2A-4xDu1gntRK5s57NUg3nsGsyi-xqQ@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Sat, Oct 10, 2020 at 5:25 PM Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> wrote:
>
> 8. You have made changes related to trigger execution for Gather node,
> don't we need similar changes for GatherMerge node?
>
..
>
> 10. Don't we need a change similar to cost_gather in
> cost_gather_merge? It seems you have made only partial changes for
> GatherMerge node.
>
Please ignore these two comments as we can't push Insert to workers
when GatherMerge is involved as a leader backend does the final phase
(merge the results by workers). So, we can only push the Select part
of the statement.
--
With Regards,
Amit Kapila.
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