From e3cb06f6712323debc9553e79955501437948794 Mon Sep 17 00:00:00 2001 From: Bharath Rupireddy Date: Fri, 31 Dec 2021 05:52:24 +0000 Subject: [PATCH v1] Skip processing snapshot, mapping files during end-of-recovery checkpoint This makes the server available faster. However the regular checkpoints can process these files. --- src/backend/access/transam/xlog.c | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-) diff --git a/src/backend/access/transam/xlog.c b/src/backend/access/transam/xlog.c index 87cd05c945..9d1331dd0d 100644 --- a/src/backend/access/transam/xlog.c +++ b/src/backend/access/transam/xlog.c @@ -9570,8 +9570,21 @@ CheckPointGuts(XLogRecPtr checkPointRedo, int flags) { CheckPointRelationMap(); CheckPointReplicationSlots(); - CheckPointSnapBuild(); - CheckPointLogicalRewriteHeap(); + + /* + * Let's not process snapshot and mapping files during end-of-recovery + * checkpoint to make the server available faster. However, the regular + * checkpoints can process these files. + */ + if (flags & CHECKPOINT_END_OF_RECOVERY) + ereport((log_checkpoints ? LOG : DEBUG2), + (errmsg("skipped processing of replication slot snapshot and mapping files during end-of-recovery checkpoint"))); + else + { + CheckPointSnapBuild(); + CheckPointLogicalRewriteHeap(); + } + CheckPointReplicationOrigin(); /* Write out all dirty data in SLRUs and the main buffer pool */ -- 2.25.1