debug-apiserver (#3323)

diff --git a/heron/tools/apiserver/src/java/org/apache/heron/apiserver/utils/Logging.java b/heron/tools/apiserver/src/java/org/apache/heron/apiserver/utils/Logging.java
index c0eec95..fae17c5 100644
--- a/heron/tools/apiserver/src/java/org/apache/heron/apiserver/utils/Logging.java
+++ b/heron/tools/apiserver/src/java/org/apache/heron/apiserver/utils/Logging.java
@@ -44,7 +44,7 @@
 
     final Level level = verbose ? Level.ALL : Level.INFO;
     // configure the root heron logger and it's handlers
-    Logger logger = Logger.getLogger("org.apache");
+    Logger logger = Logger.getLogger("");
     for (Handler handler : logger.getHandlers()) {
       handler.setLevel(level);
     }