040000 tree 3cdd13d89a4cb9babee5e7c68f7ddbb66e0d5977	cdh
040000 tree 9963e40612fac3c8fabeaa66dc7b655608622509	spark_mesos
040000 tree 118a687fd9b0d2d639d28cac3d98b682121082d0	spark_standalone
040000 tree b233ddcad6fea72f74a34277f3650b3b538255a7	spark_yarn_cluster