* clean code first stage
Signed-off-by: Ngroot <yihua.mo@zilliz.com>

* rename some files
Signed-off-by: Ngroot <yihua.mo@zilliz.com>

* rename
Signed-off-by: Ngroot <yihua.mo@zilliz.com>

* typo
Signed-off-by: Ngroot <yihua.mo@zilliz.com>