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-rw-r--r--src/backend/replication/logical/reorderbuffer.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/src/backend/replication/logical/reorderbuffer.c b/src/backend/replication/logical/reorderbuffer.c
index 77375d91b28..9594b1c671b 100644
--- a/src/backend/replication/logical/reorderbuffer.c
+++ b/src/backend/replication/logical/reorderbuffer.c
@@ -807,13 +807,14 @@ ReorderBufferCommitChild(ReorderBuffer *rb, TransactionId xid,
elog(ERROR, "subxact logged without previous toplevel record");
/*
- * Pass the our base snapshot to the parent transaction if it doesn't have
+ * Pass our base snapshot to the parent transaction if it doesn't have
* one, or ours is older. That can happen if there are no changes in the
* toplevel transaction but in one of the child transactions. This allows
- * the parent to simply use it's base snapshot initially.
+ * the parent to simply use its base snapshot initially.
*/
- if (txn->base_snapshot == NULL ||
- txn->base_snapshot_lsn > subtxn->base_snapshot_lsn)
+ if (subtxn->base_snapshot != NULL &&
+ (txn->base_snapshot == NULL ||
+ txn->base_snapshot_lsn > subtxn->base_snapshot_lsn))
{
txn->base_snapshot = subtxn->base_snapshot;
txn->base_snapshot_lsn = subtxn->base_snapshot_lsn;