add log (#1913)

* add log

Signed-off-by: groot <yihua.mo@zilliz.com>

* add log

Signed-off-by: groot <yihua.mo@zilliz.com>

* fix ut

Signed-off-by: groot <yihua.mo@zilliz.com>

* partition limit 4096

Signed-off-by: groot <yihua.mo@zilliz.com>

* fix py test

Signed-off-by: groot <yihua.mo@zilliz.com>