GitLab

* add.

* fix.

* fix.

* fix.

* fix.

* add tests.

* support node split and edge split.

* support 1 partition.

* add tests.

* fix.

* fix test.

* use hierarchical partition.

* add check.
Co-authored-by: Zheng <dzzhen@3c22fba32af5.ant.amazon.com>
Co-authored-by: Ubuntu <ubuntu@ip-172-31-22-57.us-west-2.compute.internal>
Co-authored-by: Ubuntu <ubuntu@ip-172-31-71-112.ec2.internal>