Fix pg_blocking_pids() for relation extension locks. pg_blocking_pids() assumes that members of the same lock group never block each other, but that hasn't been true for relation extension locks since v13. This commit teaches the function to report lock group members as blockers for relation extension locks. Since parallel workers are reported with their leader's PID, the result may now include the blocked session's own PID.
Oversight in commit 85f6b49c2c. Author: Bertrand Drouvot <[email protected]> Reviewed-by: Chao Li <[email protected]> Reviewed-by: Kirill Reshke <[email protected]> Reviewed-by: Shihao Zhong <[email protected]> Discussion: https://postgr.es/m/apTpV8h%2BCYHf%2B1PJ%40bdtpg Backpatch-through: 14 Branch ------ REL_18_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/dc60d6aa1eba67361ee0f91fec2fa6af7f9db3b9 Modified Files -------------- doc/src/sgml/func.sgml | 21 ++++++++++++++------- src/backend/utils/adt/lockfuncs.c | 10 ++++++++-- 2 files changed, 22 insertions(+), 9 deletions(-)
