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druid doesn't normally do updates. Maybe it's easier with the new SQL-based ingestion, idk. For classic batch ingestion, here are a few blog posts that might help: https://imply.io/blog/upserts-and-data-deduplication-with-druid/ https://blog.hellmar-becker.de/2023/03/07/selective-bulk-upserts-in-apache-druid/ https://medium.com/israeli-tech-radar/backdated-data-updates-for-apache-druid-10d163775b8

Thanks @Ben Krug, checking the documentation