From a5ea825f958c2de9fadb825cbf16bf9b1360f0df Mon Sep 17 00:00:00 2001 From: Michael Paquier Date: Fri, 14 Jul 2023 11:15:34 +0900 Subject: [PATCH] Add indisreplident to fields refreshed by RelationReloadIndexInfo() RelationReloadIndexInfo() is a fast-path used for index reloads in the relation cache, and it has always forgotten about updating indisreplident, which is something that would happen after an index is selected for a replica identity. This can lead to incorrect cache information provided when executing a command in a transaction context that updates indisreplident. None of the code paths currently on HEAD that need to check upon pg_index.indisreplident fetch its value from the relation cache, always relying on a fresh copy on the syscache. Unfortunately, this may not be the case of out-of-core code, that could see out-of-date value. Author: Shruthi Gowda Reviewed-by: Robert Haas, Dilip Kumar, Michael Paquier Discussion: https://postgr.es/m/CAASxf_PBcxax0wW-3gErUyftZ0XrCs3Lrpuhq4-Z3Fak1DoW7Q@mail.gmail.com Backpatch-through: 11 --- src/backend/utils/cache/relcache.c | 1 + 1 file changed, 1 insertion(+) diff --git a/src/backend/utils/cache/relcache.c b/src/backend/utils/cache/relcache.c index 8a08463c2b..8e28335915 100644 --- a/src/backend/utils/cache/relcache.c +++ b/src/backend/utils/cache/relcache.c @@ -2305,6 +2305,7 @@ RelationReloadIndexInfo(Relation relation) relation->rd_index->indcheckxmin = index->indcheckxmin; relation->rd_index->indisready = index->indisready; relation->rd_index->indislive = index->indislive; + relation->rd_index->indisreplident = index->indisreplident; /* Copy xmin too, as that is needed to make sense of indcheckxmin */ HeapTupleHeaderSetXmin(relation->rd_indextuple->t_data,