Reducing Retention Policy did not free up space


i have a 1 year retention policy on my db and i want to change this to 30 days due to capacity issues.
I altered the existing retention policy to 30d successfully but the old data gets not dropped.
Any ideas?

It just needed some time to apply the policy. all works well!

I have the same issue with InfluxDB 2.2: after downgrading the data in another bucket, I changed the retention policy of the original bucket from forever to 90 days, but the du size of 44G hasn’t changed yet.

Isn’t there a way to force the data purge and reclaim space?

EDIT: Seems not possible, however eventually space has been reclaimed.