v0.6.0a1

This is the release notes of v0.6.0a1. See here for the complete list of solved issues and merged PRs.

New Features

• DataFrame
  • Support use_arrow_dtype for md.read_csv and md.read_sql (#1491)
• Others
  • Store and query graph information in batch (#1501)
  • Integrate with Ray (#1508)

Enhancements

• Fix compatibility for gevent>=20.5.1 (#1490)
• Add an option to control writing shuffle data into disk (#1513)
• Unify logics of modes including eager, kernel and build (#1528)
• Optimize mars.learn.cluster.KMeans when n_clusters is relatively large (#1511)

Bug fixes

• Fix mt.linalg.norm when axis is negative (#1499, thanks @YoshieraHuang!)
• Fix mt.isclose when some of the arguments is scalar (#1498)
• Fix mt.arctan2 when arguments contain scalar (#1502)
• Update mt.split to support list and tuple (#1507, thanks @YoshieraHuang!)
• Fix pandas 1.1 compatibility (#1437)
• Fix creating Mars DataFrame from an empty pandas DataFrame (#1522)
• Unregister scheduler observer when destroying actors (#1525)
• Support df.groupby().count() for arrow dtype with and without pyarrow installed (#1523)
• Fix DataFrame reduction on GPU (#1534)

Documentation

• Fix URL of contribution guide (#1505, thanks @StevenJokes!)