471a9d6e2a88d449a15cb6b6699626cc0a832eba,controller/src/main/java/org/apache/ambari/controller/Stacks.java,Stacks,Stacks,#,55

Before Change


            JAXBContext.newInstance("org.apache.ambari.common.rest.entities");
        loadDummyStack(jaxbContext, "hadoop-security", 0);
        loadDummyStack(jaxbContext, "cluster123", 0);
        loadDummyStack(jaxbContext, "cluster124", 0);
        //loadDummyStack(jaxbContext, "puppet1", 0);
      } catch (JAXBException e) {
        throw new RuntimeException("Can't create jaxb context", e);

After Change


        if (!this.dataStore.stackExists("cluster123")) {
            loadDummyStack(jaxbContext, "cluster123", 0);
        }
        if (!this.dataStore.stackExists("cluster124")) {
            loadDummyStack(jaxbContext, "cluster124", 0);
        }
        //loadDummyStack(jaxbContext, "puppet1", 0);
      } catch (JAXBException e) {