Document a few caveats in synchronous logical replication. In a synchronous logical setup, locking [user] catalog tables can cause deadlock. This is because logical decoding of transactions can lock catalog tables to access them so exclusively locking those in transactions can lead to deadlock. To avoid this users must refrain from having exclusive locks on catalog tables.
Author: Takamichi Osumi Reviewed-by: Vignesh C, Amit Kapila Backpatch-through: 9.6 Discussion: https://www.postgresql.org/message-id/20210222222847.tpnb6eg3yiykzpky%40alap3.anarazel.de Branch ------ REL_12_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/eb231dbd80d2318e27e9b4d0aa72696de6e6b32f Modified Files -------------- doc/src/sgml/logicaldecoding.sgml | 76 +++++++++++++++++++++++++++++---------- 1 file changed, 57 insertions(+), 19 deletions(-)
