cluster.validateSetManualElasticity(Arrays.asList("compute")));
cluster.setDistroVendor(Constants.APACHE_VENDOR);
compute.setRoles(Arrays.asList("hadoop_tasktracker"));
compute.setComputeOnly(defaultSoftwareManager.isComputeOnlyRoles(compute.getRoles()));
cluster.setNodeGroups(Arrays.asList(compute));
assertEquals(true, cluster.validateSetManualElasticity());
compute.setRoles(Arrays.asList("hadoop_tasktracker",
"tempfs_client"));
compute.setComputeOnly(defaultSoftwareManager.isComputeOnlyRoles(compute.getRoles()));
cluster.setNodeGroups(Arrays.asList(compute));
assertEquals(true, cluster.validateSetManualElasticity());