Remove println.
diff --git a/helix-core/src/main/java/org/apache/helix/common/caches/BasicClusterDataCache.java b/helix-core/src/main/java/org/apache/helix/common/caches/BasicClusterDataCache.java
index 3584b36..1260a2b 100644
--- a/helix-core/src/main/java/org/apache/helix/common/caches/BasicClusterDataCache.java
+++ b/helix-core/src/main/java/org/apache/helix/common/caches/BasicClusterDataCache.java
@@ -113,7 +113,6 @@
 
     if (_propertyDataChangedMap.get(HelixConstants.ChangeType.LIVE_INSTANCE)) {
       long start = System.currentTimeMillis();
-      System.out.println("reloading live instances");
       _propertyDataChangedMap.put(HelixConstants.ChangeType.LIVE_INSTANCE, false);
       _propertyDataChangedMap.put(HelixConstants.ChangeType.CURRENT_STATE, true);
       _liveInstancePropertyCache.refresh(accessor);