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Etsuro Fujita c318777da8 postgres_fdw: Fix handling of abort-cleanup-failed connections. ... As connections that failed abort cleanup can't safely be further used, if a remote query tries to get such a connection, we reject it. Previously, this rejection involved dropping the connection if it was open, without accounting for the possibility of open cursors using it, causing a server crash when such an open cursor tried to use an already-dropped connection, as a cursor-handling function (create_cursor, fetch_more_data, or close_cursor) was called on a freed PGconn. To fix, delay dropping failed connections until abort cleanup of the main transaction, to ensure open cursors using such a connection can safely refer to the PGconn for it. Oversight in commit 8bf58c0d9. Reported-by: Zhibai Song <songzhibai1234@gmail.com> Diagnosed-by: Zhibai Song <songzhibai1234@gmail.com> Author: Etsuro Fujita <etsuro.fujita@gmail.com> Reviewed-by: Michael Paquier <michael@paquier.xyz> Reviewed-by: Chao Li <li.evan.chao@gmail.com> Reviewed-by: Matheus Alcantara <matheusssilv97@gmail.com> Discussion: https://postgr.es/m/CAPmGK176y6JP017-Cn%2BhS9CEJx_6iVhRoYbAqzuLU4d8-XPPNg%40mail.gmail.com Backpatch-through: 14		4 days ago
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expected	postgres_fdw: Fix handling of abort-cleanup-failed connections.	4 days ago
specs	postgres_fdw: Add more test coverage for EvalPlanQual testing.	6 months ago
sql	postgres_fdw: Fix handling of abort-cleanup-failed connections.	4 days ago
t	Fix typos and grammar in the code	1 year ago
.gitignore	Fix EvalPlanQual handling of foreign/custom joins in ExecScanFetch.	7 months ago
Makefile	Fix EvalPlanQual handling of foreign/custom joins in ExecScanFetch.	7 months ago
connection.c	postgres_fdw: Fix handling of abort-cleanup-failed connections.	4 days ago
deparse.c	Convert PathKey to use CompareType	1 year ago
meson.build	Fix EvalPlanQual handling of foreign/custom joins in ExecScanFetch.	7 months ago
option.c	Remove INT64_HEX_FORMAT and UINT64_HEX_FORMAT	9 months ago
postgres_fdw--1.0--1.1.sql	postgres_fdw: Add functions to discard cached connections.	5 years ago
postgres_fdw--1.0.sql	…
postgres_fdw--1.1--1.2.sql	postgres_fdw: Extend postgres_fdw_get_connections to return remote backend PID.	1 year ago
postgres_fdw.c	Fix memory leakage in postgres_fdw's DirectModify code path.	11 months ago
postgres_fdw.control	postgres_fdw: Add "used_in_xact" column to postgres_fdw_get_connections().	2 years ago
postgres_fdw.h	Update copyright for 2025	1 year ago
shippable.c	Update copyright for 2025	1 year ago