From 6dd413c17424d91ccb3f9df8a95d37ef905c555a Mon Sep 17 00:00:00 2001 From: Alena Vinter Date: Sun, 15 Jun 2025 01:29:23 +0700 Subject: [PATCH 2/2] [PGPRO-11992] [FIX] Removed assertion in walsummarizer Fixes an edge case in the walsummarizer process where fetching InsertTLI during a timeline switch could lead to latest_lsn < read_upto (which becomes walrcv->flushedUpto in this case), previously triggering an assertion failure. We now handle this safely by replacing the assertion with conditional logic. --- src/backend/postmaster/walsummarizer.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/src/backend/postmaster/walsummarizer.c b/src/backend/postmaster/walsummarizer.c index 11857356ce4..690a3b17e97 100644 --- a/src/backend/postmaster/walsummarizer.c +++ b/src/backend/postmaster/walsummarizer.c @@ -1551,8 +1551,8 @@ summarizer_read_local_xlog_page(XLogReaderState *state, if (private_data->tli == latest_tli) { /* Still the current timeline, update max LSN. */ - Assert(latest_lsn >= private_data->read_upto); - private_data->read_upto = latest_lsn; + if (latest_lsn >= private_data->read_upto) + private_data->read_upto = latest_lsn; } else { -- 2.51.0