ATLAS-2933-2 Fix for changed behavior of empty arr attributes

repository/src/main/java/org/apache/atlas/repository/store/graph/v2/AtlasGraphUtilsV2.java

@@ -218,12 +218,11 @@ public class AtlasGraphUtilsV2 {
 
         Object existingValue = element.getProperty(propertyName, Object.class);
 
-        if (value == null || (value instanceof Collection && ((Collection)value).isEmpty())) {
+        if (value == null) {
             if (existingValue != null) {
                 if (LOG.isDebugEnabled()) {
                     LOG.debug("Removing property {} from {}", propertyName, toString(element));
                 }
-
                 element.removeProperty(propertyName);
             }
         } else {

repository/src/test/java/org/apache/atlas/repository/store/graph/v2/AtlasComplexAttributesTest.java

@@ -218,7 +218,7 @@ public class AtlasComplexAttributesTest extends AtlasEntityTestBase {
 
         assertNull(updatedSimpleEntity.getAttribute("stringAtrr"));
         assertEquals(updatedSimpleEntity.getAttribute("mapOfStrings"), Collections.emptyMap());
-        assertNull(updatedSimpleEntity.getAttribute("arrayOfStrings"));
+        assertEquals(updatedSimpleEntity.getAttribute("arrayOfStrings"), Collections.emptyList());
 
         updatedSimpleEntity.setAttribute("stringAtrr", "");
         updatedSimpleEntity.setAttribute("mapOfStrings", null);