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From: Dimitrios Apostolou <[email protected]>
To: Frédéric Yhuel <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: Christophe Courtois <[email protected]>
Subject: Re: [PATCH] ALTER TABLE ADD FOREIGN KEY to partitioned table, is not parallelized
Date: Tue, 17 Jun 2025 18:23:09 +0200 (CEST)
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>
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	<[email protected]>
	<[email protected]>

>
> FWIW I implemented a pg_restore --freeze patch, see attached. It needs 
> another patch of mine from [1] that implements pg_restore --data-only 
> --clean, which for parallel restores encases each COPY in its own transaction 
> and prepends it with a TRUNCATE. All feedback is welcome.
>
> [1] https://www.postgresql.org/message-id/c61263f2-7472-5dd8-703d-01e683421f61%40gmx.net
>
> It works really fast for the data, and I see that some, but not all items 
> from section=post-data, start parallel plans. For example I see CREATE INDEX 
> spawns parallel workers.

I added it to July's commitfest, mostly to trigger discussion around the 
issue.

https://commitfest.postgresql.org/patch/5826/

Not sure how to mark on the commitfest page that the patch requires 
another patch from another commitfest entry.


Dimitris

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