when file is downloaded partially isCached returns false

annotation/src/main/java/lcsb/mapviewer/annotation/cache/BigFileCache.java

@@ -848,6 +848,10 @@ public class BigFileCache {
         logger.warn("File is supposed to be cached but it's not there... " + sourceUrl);
         return false;
       }
+      if (entry.getDownloadProgress() == null || entry.getDownloadProgress() < 100.0) {
+        logger.warn("File is not complete: " + entry.getLocalPath() + ".");
+        return false;
+      }
     }
     return entry != null;
   }