private RefreshConnections makeRefreshConnections(Set<Integer> task_ids) {
//���� ÿ��taskid��������tupple�п���������Щtasks��
Set<Integer> outboundTasks = WorkCommon.worker_outbound_tasks(
tasksToComponent, systemContext, task_ids);
RefreshConnections refresh_connections = new RefreshConnections(active,
conf, zkCluster, topologyId, outboundTasks, nodeportSocket,
mqContext, taskNodeport);
return refresh_connections;
}