// --------------------------------------------------------------------------------------------
// Local Test Cluster Life Cycle
// --------------------------------------------------------------------------------------------
public void startCluster() throws Exception {
this.executor = new NepheleMiniCluster();
this.executor.setDefaultOverwriteFiles(true);
this.executor.setLazyMemoryAllocation(true);
this.executor.setMemorySize(TASK_MANAGER_MEMORY_SIZE);
this.executor.setTaskManagerNumSlots(taskManagerNumSlots);
this.executor.setNumTaskManager(this.numTaskManager);