TaskAttemptID tAttID = new TaskAttemptID(tID,0);
FinishTaskControlAction action = new FinishTaskControlAction(tID);
Collection<TTClient> ttClients = cluster.getTTClients();
for (TTClient ttClient : ttClients) {
TTProtocol tt = ttClient.getProxy();
tt.sendAction(action);
ttTaskinfo = tt.getTasks();
for (TTTaskInfo tttInfo : ttTaskinfo) {
if (!tttInfo.isTaskCleanupTask()) {
pid = tttInfo.getPid();
ttClientIns = ttClient;