Re: Asynchronous MergeAppend

Hi.

Matheus Alcantara писал(а) 2025-11-03 16:00:
> So I'm +1 for the idea. I know it's been while since the last patch,
> and
> unfortunully it hasn't received reviews since then. Do you still plan
> to
> work on it? I still need to take a look on the code to see if I can
> help
> with some comments.
>
> During the tests I got compiler errors due to fce7c73fba4, so I'm
> attaching a v5 with guc_parameters.dat correctly sorted.
>
> The postgres_fdw/regress tests was also failling due to some whitespace
> problems, v5 also fix this.
>
> [1]
> https://www.postgresql.org/message-id/202510251154.isknefznk566%40alvherre.pgsql
>

I'm still interested in working on this patch, but it didn't get any
review (besides internal one). I suppose, Append and MergeAppend nodes
need some unification, for example, ExecAppendAsyncEventWait and
ExecMergeAppendAsyncEventWait looks the same, both
classify_matching_subplans() versions are suspiciously similar. But
honestly, patch needs thorough review.
--
Best regards,
Alexander Pyhalov,
Postgres Professional