Fix memory leak in SnapBuildSerialize. The memory for the snapshot was leaked while serializing it to disk during logical decoding. This memory will be freed only once walsender stops streaming the changes. This can lead to a huge memory increase when master logs Standby Snapshot too frequently say when the user is trying to create many replication slots.
Reported-by: [email protected] Diagnosed-by: [email protected] Author: Amit Kapila Backpatch-through: 9.5 Discussion: https://postgr.es/m/[email protected] Branch ------ REL_12_STABLE Details ------- https://git.postgresql.org/pg/commitdiff/0b2ae3c928b2926fafa1c423b07b949a4c3bc402 Modified Files -------------- src/backend/replication/logical/snapbuild.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
