diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index e8b9d1a4dd8..f3b9ef27d2b 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -773,6 +773,8 @@ DefineIndex(Oid relationId,
 
 	PopActiveSnapshot();
 	PrintSnapMgrStatus("concurrent index build, after PopActiveSnapshot");
+	elog(LOG, "concurrent index build: releasing snap %p with regd_count %d, active_count %d",
+		 snapshot, snapshot->regd_count, snapshot->active_count);
 	UnregisterSnapshot(snapshot);
 	PrintSnapMgrStatus("concurrent index build, after UnregisterSnapshot");
 	InvalidateCatalogSnapshot();
diff --git a/src/backend/utils/time/snapmgr.c b/src/backend/utils/time/snapmgr.c
index 2a3d915e1f9..dbb3544af7b 100644
--- a/src/backend/utils/time/snapmgr.c
+++ b/src/backend/utils/time/snapmgr.c
@@ -1411,7 +1411,7 @@ PrintSnapMgrStatus(const char *context)
 	for (active = ActiveSnapshot; active != NULL; active = active->as_next)
 		asdepth++;
 
-	elog(LOG, "%s: %d reg snaps, %d active snaps, cat snap %p, xmin %u",
+	elog(LOG, "%s: %d reg snaps, %d active snaps, first snap %p, cat snap %p, xmin %u",
 		 context, RegisteredSnapshots, asdepth,
-		 CatalogSnapshot, MyPgXact->xmin);
+		 FirstXactSnapshot, CatalogSnapshot, MyPgXact->xmin);
 }