GitLab

* Sync parmetis_wrapper with changes in metadata.json

1. In the preprocess.py, make sure that num_partitions is defined as input argument. Also, align 'input_dir' with the input dataset. schema_file is assumed to be located inside the input_dir. Also, graph_stats.txt file is assumed to be present in the input_dir.

2. Use DGL_HOME environment variable so that parmetis_wrapper command can be run anywhere.

* Fix CI test failure cases.

* Addressing CI review comments.

* Addressing CI test failures.

* Applying lintrunner patch

* [Dist] add input_dir for parmetis preprocess

* add support for parquet

* update parmetis_wrapper accordingly

* Creating ParMETIS wrapper script to run parmetis using one script from user perspective

* Addressed all the CI comments from PR https://github.com/dmlc/dgl/pull/4529

* Addressing CI comments.

* Isort, and black changes.

* Replaced python with python3

* Replaced single quote with double quotes per suggestion.

* Removed print statement

* Addressing CI Commets.

* Addressing CI review comments.

* Addressing CI comments as per chime discussion with Rui

* CI Comments, Black and isort changes

* Align with code refactoring, black, isort and code review comments.

* Addressing CI review comments, and fixing merge issues with the master branch

* Updated with proper unit test skip decorator