YarnContainerClusterOperations operations = buildClusterOperations(client, applicationId);
ContainerClusterCreateRequest request = new ContainerClusterCreateRequest();
request.setClusterId(clusterId);
ProjectionDataType projectionData = new ProjectionDataType();
projectionData.setAny(projectionDataAny);
projectionData.setHosts(hosts);
projectionData.setRacks(racks);
request.setProjectionData(projectionData);
operations.clusterModify(clusterId, request);
return "Cluster " + clusterId + " modified.";