Druid 0.12.0-rc3 available

We’re happy to announce our next release candidate, Druid 0.12.0-rc3!

Druid 0.12.0 will contain over a hundred performance improvements, stability improvements, and bug fixes from almost 40 contributors. This release adds improvements to the Kafka indexing service, improved task and segment management features, and a new basic HTTP authentication and role-based access control extension.

Other major new features include:

  • Test stats post-aggregators

  • Numeric quantiles sketch aggregator

  • Query request queuing improvements

  • Various performance improvements

  • Various improvements to Druid SQL

Everyone in the community is invited to help out with the upcoming release by downloading this candidate and evaluating it.

Draft release notes are at:


Documentation for this release candidate is at:


You can download the release candidate here:


Please file GitHub issues if you find any problems:


Thanks to everyone who contributed!