Druid 0.9.2-rc1 available

[Gian Merlino]

We're happy to announce our next release candidate, Druid 0.9.2-rc1!

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.

Draft release notes are at:

https://github.com/druid-io/druid/issues/3503

Documentation for this release candidate is at:

http://druid.io/docs/0.9.2-rc1/

You can download the release candidate here:

http://druid.io/downloads.html

Please file GitHub issues if you find any problems:

https://github.com/druid-io/druid/issues/new

Thanks everyone who contributed issues, docs, and code!

Gian