turn-off-hint-bits.diff

diff --git a/src/backend/access/heap/heapam_visibility.c b/src/backend/access/heap/heapam_visibility.c
index 537e681b236..bd9f010f2ea 100644
--- a/src/backend/access/heap/heapam_visibility.c
+++ b/src/backend/access/heap/heapam_visibility.c
@@ -113,6 +113,11 @@ static inline void
 SetHintBits(HeapTupleHeader tuple, Buffer buffer,
 			uint16 infomask, TransactionId xid)
 {
+	/*
+	 * Turn off hint bits to test pg_probackup with PG_PROBACKUP_PARANOIA=ON,
+	 * i.e. doing per block checksums comparison.
+	 */
+	return;
 	if (TransactionIdIsValid(xid))
 	{
 		/* NB: xid must be known committed here! */