repeated int32 wait_time = 6;

Each node has an unique string id.

The rank ID of this node in its group. Assume this a worker node in a worker group with N workers. Then this node will be assigned an unique ID from 0

repeated double busy_time = 11;

repeated .PS.FilterConfig.FixedFloatConfig fixed_point = 4;

repeated int64 fp_key = 3;

TODO read home from $HDFS_HOME if empty

optional .PS.BCDCall bcd = 22;

optional .PS.DataConfig data = 10;

optional .PS.PbRange key_range = 7;

optional float max_value = 2 [default = 1];

optional float min_value = 1 [default = -1];

optional .PS.ManageApp mng_app = 19;

optional .PS.ManageNode mng_node = 18;

optional int32 port = 4;

optional .PS.CallSharedPara shared_para = 20;

optional .PS.TailKeyFilter tail_filter = 3;

repeated double lambda = 2;

test whether or not an entry is filtered

repeated .PS.Node node = 2;