* Add `XGBOOST_RABIT_TRACKER_IP_FOR_TEST` to set rabit tracker IP * change spark and rabit tracker IP to 127.0.0.1on GitHub Action. Co-authored-by: fis <jm.yuan@outlook.com>
The documentation of xgboost is generated with recommonmark and sphinx. You can build it locally by typing "make html" in this folder. Checkout https://recommonmark.readthedocs.org for guide on how to write markdown with extensions used in this doc, such as math formulas and table of content.