On Mon, Aug 08, 2022 at 03:45:11PM -0700, Slava Mudry wrote:
> Postgres 14 improved partitioning quite a bit. I used it in Postgres 9 and
> there was a lot of locking on partition hierarchy when you add/drop
> partition tables.
Note that postgres 9 didn't have native/declarative partitioning, and most
improvements in native partitioning don't apply to legacy/inheritance
partitioning.
https://www.postgresql.org/docs/devel/ddl-partitioning.html
"Native" partitioning added in v10 tends to require stronger locks for add/drop
than legacy partitioning, since partitions have associated bounds, which cannot
overlap. The locking is improved in v12 with CREATE+ATTACH and v14 with
DETACH CONCURRENTLY+DROP.
--
Justin