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Do check out this summit recording: https://druidsummit.org/#wistia-pt7z1v1bza

Thanks @Brandon Tan Will take a look on this

This is something that works in production: https://github.com/deep-bi/spark-druid-segment-reader You can build an ETL by reading Druid segments in Spark, transform it there and load into your destination tool. You can download a ready to use .jar from here: https://github.com/deep-bi/spark-druid-segment-reader/releases

Thanks @Sebastian Zontek, will look into it 🙏 Meanwhile I see following limitation that is not suits our needs

Only segments with daily granularity are supported.

Thanks @Michael Taranov for letting us know. We’re working on that. You can raise an issue on Github if you’d like.