Druid 0.9.1-rc3 available

We’re happy to announce our next release candidate, Druid 0.9.1-rc3!

Druid 0.9.1 will contain hundreds of performance improvements, stability improvements, and bug fixes from over 30 contributors. Major new features include an experimental Kafka Supervisor to support exactly-once consumption from Apache Kafka, support for cluster-wide query-time lookups (QTL), and an improved segment balancing algorithm.

This release candidate contains fixes for supervised Kafka ingestion and the new Lookups framework, as well as fixing issues in packaging and documentation. Thanks to everyone who tested our previous release candidates.

You can download the release candidate here:


Draft release notes are at:


Please file GitHub issues here if you find any problems with the release candidate:


Thanks to all of you who contributed issues, docs, and code!