Druid 0.9.2-rc2 available

We’re happy to announce our next release candidate, Druid 0.9.2-rc2!

Druid 0.9.2 will contain hundreds of performance improvements, stability improvements, and bug fixes from over 30 contributors. Major new features include ability to disable rollup at ingestion time, a new groupBy engine, ability to filter on longs, new encoding options for long-typed columns, a query cache implementation based on Caffeine, a new lookup extension exposing fine grained caching strategies, support for reading ORC files, and new aggregators for variance and standard deviation.

We recommend that everyone using 0.9.2-rc1 upgrade to 0.9.2-rc2.

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 everyone who contributed issues, docs, and code!