Cube Planner Configuration

[changji guo <cj...@gmail.com>]

Hi all:
Can someone explain the meaning of the following configuration?
kylin.cube.cubeplanner.expansion-threshold
kylin.cube.cubeplanner.recommend-cache-max-size
kylin.cube.cubeplanner.query-uncertainty-ratio
kylin.cube.cubeplanner.bpus-min-benefit-ratio
The official documentation has only default values and no explanation....
http://kylin.apache.org/docs/install/configuration.html

In addition, is there any configuration to close the first phase of the
cube planner?
Thanks very much!