* Add instance lock
Signed-off-by: Nwxyu <xy.wang@zilliz.com>

* update message
Signed-off-by: Nwxyu <xy.wang@zilliz.com>

* update unittest CMakeLists.txt
Signed-off-by: Nwxyu <xy.wang@zilliz.com>

* update
Signed-off-by: Nwxyu <xy.wang@zilliz.com>

* update
Signed-off-by: Nwxyu <xy.wang@zilliz.com>

* update
Signed-off-by: Nwxyu <xy.wang@zilliz.com>

* update
Signed-off-by: Nwxyu <xy.wang@zilliz.com>

* fix clang-format
Signed-off-by: Nwxyu <xy.wang@zilliz.com>

* update
Signed-off-by: Nwxyu <xy.wang@zilliz.com>
Co-authored-by: NJin Hai <hai.jin@zilliz.com>