HAWQ-1587. Fix metadata parameters handling in PXF
diff --git a/pxf/pxf-service/src/main/java/org/apache/hawq/pxf/service/utilities/ProtocolData.java b/pxf/pxf-service/src/main/java/org/apache/hawq/pxf/service/utilities/ProtocolData.java
index 39926ed..227e987 100644
--- a/pxf/pxf-service/src/main/java/org/apache/hawq/pxf/service/utilities/ProtocolData.java
+++ b/pxf/pxf-service/src/main/java/org/apache/hawq/pxf/service/utilities/ProtocolData.java
@@ -178,7 +178,7 @@
         requestParametersMap = paramsMap;
         profile = profileString;
         setProfilePlugins();
-        metadata = getProperty("METADATA");
+        metadata = getUserProperty("METADATA");
 
         parseSecurityProperties();
     }