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I don't think there is a facility to control it in terms of how many periods it runs at a time. In the docs https://druid.apache.org/docs/latest/design/coordinator.html#automatic-compaction it mentions: The maximum number of running compaction tasks is

min(sum of worker capacity * slotRatio, maxSlots)

. Note that even if

min(sum of worker capacity * slotRatio, maxSlots) = 0

, at least one compaction task is always submitted if the compaction is enabled for a dataSource.

Thanks. I came to the same conclusion