@VisibleForTesting
protected RootInputInitializerRunner createRootInputInitializerRunner(
String dagName, String vertexName, TezVertexID vertexID,
EventHandler eventHandler, int numTasks, int numNodes,
Resource vertexTaskResource, Resource totalResource) {
return new RootInputInitializerRunner(dagName, vertexName, vertexID,
eventHandler, dagUgi, vertexTaskResource, totalResource, numTasks, numNodes,
appContext.getApplicationAttemptId().getAttemptId());
}