Notable changes:
- Dropped Python 2.6 support. #934
- New experimental "assistant" feature.
- External tasks are now also registered. This might cause breakage in settings like described here
- Many configuration settings have been hoisted to the new configuration system. Particularly for hdfs-related parameters. The
--helpcommand will show what new options are available. - While
is_globalis not removed yet. It'll get removed anytime soon. Please use the newpositional=Falsesetting as a replacement in your parameters. In fact, we suggest to always usepositional=False. - The central scheduler now supports searching within groups. #903
- New dependency graph rendering using D3. #920
- The built in map reduce framework can now use
ujsoninstead of doingeval. It's still not clear to us how much faster it is. #939 - Various bug fixes and other features.