README.md

Release Notes for Superset 2.0

Superset 2.0 is a big step forward. This release cleans up many legacy code paths and feature flags, and deprecates lots of legacy behaviors in Superset.

• Developer Experience
• Features
• Config and Feature flags
• Breaking Changes

Developer Experience

• Addition of a statsd gauge metric for Slack and email notifications for increased visibility into errors around alerts / reports (#20158)

• Helm chart now supports resource limits and requests for each component (#20052)

• New GitHub workflow to test Storybook Netlify instance nightly (#19852)

• Minimum requirement for Superset is now Python 3.8 (#19017

Features

Charting and Dashboard Experience

Support for horizontal bar chart added (#19918)

Time Series Charts now support stacking of both negative and positive values (#20408)

• Pie charts now defaults to a row limit of 100 to prevent crashes when a high-cardinality column is chosen as the dimension (#20392)

• World map chart now supports coloring either by metric or by the country column (#19881)

• Table visualization now supports drag and drop for columns (#19381)

• Mixed chart now supports Advanced Analytics (#19851)

• Add support for generic x-axis (non-time-series) in the Mixed Chart (#20097)

• Charts can now be created in Edit Dashboard mode (#20126)

• Add aggregate total for Pie charts (#19622)

• Legend is now enabled by default for relevant charts (#19927)

View Results Experience

• Explore and Dashboard views now support displaying of multiple results (#20277)

• Results pane in Dashboard view now more closely mirrors rich functionality from Results pane in Explore (#20144)

Quality of Life

• Edit Dataset modal now doesn't close when you click away (#20278)

• When editing the label in the Metrics popover, pressing Enter now saves what you typed (#19898)

• When adding new chart from the dashboard view, the dashboard name will now pre-fill (#20129)

• Annotations now have an improved empty state (#20160)

• Confirmational modal is now shown if user exits Explore without saving changes (#19993)

• Explore popovers now close when the Escape key is pressed (#19902)

• Run and Save buttons are redesigned for improved usability (#19558)

Databases

• Native database driver for Databricks (#20320)

• Time grains for SQLite are now simplified (#19745)

• Multiple upgrades to the Trino database engine (#20152)

• Switch from sqlalchemy-trino to trino-python-client (#19957)

• Apache Pinot now supports more time grains in Superset (#19724)

Jinja

• New Jinja macro enables querying / referencing both physical and virtual datasets in SQL Lab (#15241)

• New Jinja macro added to improve experience of including multiple items (#19574)

Other

• Datasets can now be filtered by their certification status (#20136)

Config and Feature Flags

• Initial implementation of advanced types (#18794)

  • Flag: ENABLE_ADVANCED_DATA_TYPES

• Caching can now be enabled in database setups when user impersonation is enabled (#20114)

  • Flag: CACHE_IMPERSONATION

• Control behavior for how color palettes are chosen (#19987)

  • Flag: USE_ANALAGOUS_COLORS

• Enabling non-time-series x-axis in some charts (#20097)

  • Flag: GENERIC_CHART_AXES

• As part of the 2.0 cleanup efforts, the following feature flags were removed (which means the behavior is now permanently enabled):

  • ROW_LEVEL_SECURITY
  • ENABLE_REACT_CRUD_VIEWS
  • PUBLIC_ROLE_LIKE_GAMMA

• The following feature flags are now True by default, but can be turned back to False:

  • ENABLE_EXPLORE_DRAG_AND_DROP
  • ENABLE_DND_WITH_CLICK_UX
  • DISABLE_LEGACY_DATASOURCE_EDITOR
  • SQLLAB_BACKEND_PERSISTENCE
  • VERSIONED_EXPORT

• The following config flags were removed:

  • APP_ICON_WIDTH

• A number of legacy interim flags were removed around SIP-15 (#18936)

• The ENABLE_JAVASCRIPT_CONTROLS flag was moved from an app config to a feature flag

Breaking Changes

To learn more about the breaking changes in 2.0, please read UPDATING.MD