Viewing profile — gianm

It does seem odd, especially since in real world cases I'm more accustomed to seeing Druid and ClickHouse be in the same ballpark of performance. Sometimes one is somewhat faster t…

This is impressive work: it's time consuming to set up and benchmark so many different systems! Impressiveness of the effort notwithstanding, I also want to encourage people to do …

I'm a committer on Apache Druid and generally a big fan of observability. I'm glad that you found Druid useful in building this! A tip, if you aren't already doing it: with metric …

Those are good questions. IMO Druid is most well-differentiated if you want to power an online, real-time, high-concurrency analytical application at scale. It is the use case Drui…

Hey Mani. Druid committer here. It actually is a column store! The project makes a big deal about its ability to do indexes and pre-aggregation because those are important capabili…

Logically, an array of booleans and a set of integers are equivalent. So in the Druid developer community we usually use the terms interchangeably. But to be precise, our indexes a…

Druid committer here. (Also, I think we've met before in SF!) One thing I wanted to add with regard to performance. Druid does indeed get a big boost from the fact that it uses inv…

Druid committer here. Fwiw, Druid was designed to run on huge clusters and that really shows up in the multi-process architecture. The idea is that if you separate the components n…

Check out Druid [1], an open-source analytical database with tightly-coupled storage and processing engines designed for OLAP. In particular it implements a memory-mappable storage…

Fwiw, more recent versions of Druid have a no-rollup mode that does ingestion row-for-row. It ended up being useful for cases where you _do_ care about every row, maybe because you…

Druid committer here, happy to answer any questions!

The post says Pulsar can use Druid as a metrics store, so that workload should be doable. Druid is meant for exactly that sort of thing (fast aggregates with ad-hoc filters).