what i should have done last time

Author: clintropolis

server/src/main/java/org/apache/druid/segment/loading/SegmentLocalCacheManager.java

@@ -987,7 +987,7 @@ public void mount(StorageLocation mountLocation) throws SegmentLoadingException
                   location.getPath(),
                   mountLocation.getPath()
               );
-            } else {
+            } else if (referenceProvider != null) {
               log.debug("already mounted [%s] in location[%s]", id, mountLocation.getPath());
               return;
             }