diff --git a/hudi-common/src/main/java/org/apache/hudi/common/table/timeline/HoodieDefaultTimeline.java b/hudi-common/src/main/java/org/apache/hudi/common/table/timeline/HoodieDefaultTimeline.java
index 156633695..937bbfc70 100644
--- a/hudi-common/src/main/java/org/apache/hudi/common/table/timeline/HoodieDefaultTimeline.java
+++ b/hudi-common/src/main/java/org/apache/hudi/common/table/timeline/HoodieDefaultTimeline.java
@@ -141,7 +141,7 @@ public class HoodieDefaultTimeline implements HoodieTimeline {
 
   @Override
   public int countInstants() {
-    return new Long(instants.stream().count()).intValue();
+    return instants.size();
   }
 
   @Override