ANNOUNCEMENT: Apache Druid 0.21.0 release!

The Apache Druid team is proud to announce the release of Apache Druid 0.21.0. Druid is a high performance analytics data store for event-driven data.

Apache Druid 0.21.0 contains around 120 new features, bug fixes,
performance enhancements, documentation improvements, and additional
test coverage from 36 contributors. Major new features and
improvements include:

  • Service discovery and leader election based on Kubernetes (experimental)
  • New ‘grouping’ aggregator function
  • Native parallel ingestion no longer requires explicit intervals
  • Native re-ingestion is less memory intensive
  • Improved web console styles
  • New Coordinator duty and query metrics

Source and binary distributions can be downloaded from:

Release notes are at:

A big thank you to all the contributors in this milestone release!