improve cluster_info
improve cluster_info

lshmouse/rDSN,Microsoft/rDSN,lshmouse/rDSN,Microsoft/rDSN,lshmouse/rDSN,lshmouse/rDSN,imzhenyu/rDSN,Microsoft/rDSN,qinzuoyan/rDSN,qinzuoyan/rDSN,lshmouse/rDSN,imzhenyu/rDSN,imzhenyu/rDSN,imzhenyu/rDSN,shengofsun/rDSN,shengofsun/rDSN,shengofsun/rDSN,Microsoft/rDSN,qinzuoyan/rDSN,shengofsun/rDSN,Microsoft/rDSN,imzhenyu/rDSN,qinzuoyan/rDSN,shengofsun/rDSN,qinzuoyan/rDSN,Microsoft/rDSN,shengofsun/rDSN,imzhenyu/rDSN,Microsoft/rDSN,imzhenyu/rDSN,qinzuoyan/rDSN,shengofsun/rDSN,lshmouse/rDSN,lshmouse/rDSN,Microsoft/rDSN,qinzuoyan/rDSN,imzhenyu/rDSN,qinzuoyan/rDSN,lshmouse/rDSN,shengofsun/rDSN