diff --git a/src/backend/access/transam/xlog.c b/src/backend/access/transam/xlog.c
index 43a0416..5661a17 100644
--- a/src/backend/access/transam/xlog.c
+++ b/src/backend/access/transam/xlog.c
@@ -6684,21 +6684,13 @@ StartupXLOG(void)
 		}
 
 		/*
-		 * Initialize shared replayEndRecPtr, lastReplayedEndRecPtr, and
-		 * recoveryLastXTime.
-		 *
-		 * This is slightly confusing if we're starting from an online
-		 * checkpoint; we've just read and replayed the checkpoint record, but
-		 * we're going to start replay from its redo pointer, which precedes
-		 * the location of the checkpoint record itself. So even though the
-		 * last record we've replayed is indeed ReadRecPtr, we haven't
-		 * replayed all the preceding records yet. That's OK for the current
-		 * use of these variables.
+		 * Initialize shared variables for tracking progress of WAL replay.
 		 */
 		SpinLockAcquire(&xlogctl->info_lck);
-		xlogctl->replayEndRecPtr = ReadRecPtr;
+		/* pretend we had just replayed the record before the REDO location */
+		xlogctl->replayEndRecPtr = checkpoint.redo;
 		xlogctl->replayEndTLI = ThisTimeLineID;
-		xlogctl->lastReplayedEndRecPtr = EndRecPtr;
+		xlogctl->lastReplayedEndRecPtr = checkpoint.redo;
 		xlogctl->lastReplayedTLI = ThisTimeLineID;
 		xlogctl->recoveryLastXTime = 0;
 		xlogctl->currentChunkStartTime = 0;
@@ -7388,6 +7380,8 @@ StartupXLOG(void)
 static void
 CheckRecoveryConsistency(void)
 {
+	XLogRecPtr lastReplayedEndRecPtr;
+
 	/*
 	 * During crash recovery, we don't reach a consistent state until we've
 	 * replayed all the WAL.
@@ -7396,10 +7390,16 @@ CheckRecoveryConsistency(void)
 		return;
 
 	/*
+	 * assume that we are called in the startup process, and hence don't need
+	 * a lock to read lastReplayedEndRecPtr
+	 */
+	lastReplayedEndRecPtr = XLogCtl->lastReplayedEndRecPtr;
+
+	/*
 	 * Have we reached the point where our base backup was completed?
 	 */
 	if (!XLogRecPtrIsInvalid(ControlFile->backupEndPoint) &&
-		ControlFile->backupEndPoint <= EndRecPtr)
+		ControlFile->backupEndPoint <= lastReplayedEndRecPtr)
 	{
 		/*
 		 * We have reached the end of base backup, as indicated by pg_control.
@@ -7412,8 +7412,8 @@ CheckRecoveryConsistency(void)
 
 		LWLockAcquire(ControlFileLock, LW_EXCLUSIVE);
 
-		if (ControlFile->minRecoveryPoint < EndRecPtr)
-			ControlFile->minRecoveryPoint = EndRecPtr;
+		if (ControlFile->minRecoveryPoint < lastReplayedEndRecPtr)
+			ControlFile->minRecoveryPoint = lastReplayedEndRecPtr;
 
 		ControlFile->backupStartPoint = InvalidXLogRecPtr;
 		ControlFile->backupEndPoint = InvalidXLogRecPtr;
@@ -7431,7 +7431,7 @@ CheckRecoveryConsistency(void)
 	 * consistent yet.
 	 */
 	if (!reachedConsistency && !ControlFile->backupEndRequired &&
-		minRecoveryPoint <= XLogCtl->lastReplayedEndRecPtr &&
+		minRecoveryPoint <= lastReplayedEndRecPtr &&
 		XLogRecPtrIsInvalid(ControlFile->backupStartPoint))
 	{
 		/*
@@ -7443,8 +7443,8 @@ CheckRecoveryConsistency(void)
 		reachedConsistency = true;
 		ereport(LOG,
 				(errmsg("consistent recovery state reached at %X/%X",
-						(uint32) (XLogCtl->lastReplayedEndRecPtr >> 32),
-						(uint32) XLogCtl->lastReplayedEndRecPtr)));
+						(uint32) (lastReplayedEndRecPtr >> 32),
+						(uint32) lastReplayedEndRecPtr)));
 	}
 
 	/*