Re: Parallelize correlated subqueries that execute within each worker - Mailing list pgsql-hackers

From Michael Paquier
Subject Re: Parallelize correlated subqueries that execute within each worker
Date
Msg-id YanIrCPfvgfITO5R@paquier.xyz
Whole thread Raw
In response to Re: Parallelize correlated subqueries that execute within each worker  (Robert Haas <robertmhaas@gmail.com>)
Responses Re: Parallelize correlated subqueries that execute within each worker  (James Coleman <jtc331@gmail.com>)
List pgsql-hackers
On Mon, Nov 15, 2021 at 10:01:37AM -0500, Robert Haas wrote:
> On Wed, Nov 3, 2021 at 1:34 PM James Coleman <jtc331@gmail.com> wrote:
>> As I understand the current code, parallel plans are largely chosen
>> based not on where it's safe to insert a Gather node but rather by
>> determining if a given path is parallel safe. Through that lens params
>> are a bit of an odd man out -- they aren't inherently unsafe in the
>> way a parallel-unsafe function is, but they can only be used in
>> parallel plans under certain conditions (whether because of project
>> policy, performance, or missing infrastructure).
>
> Right.

Please note that the CF bot is complaining here, so I have moved this
patch to the next CF, but changed the status as waiting on author.
--
Michael

Attachment

pgsql-hackers by date:

Previous
From: Michael Paquier
Date:
Subject: Re: libpq compression
Next
From: Michael Paquier
Date:
Subject: Re: Speed up transaction completion faster after many relations are accessed in a transaction