Originally from the User Slack
@Peter_Flockhart: When deleting a Materialized View, what are the variables that affect the timeline of all that tombstoned data? I.e. when can I expect to see a reduction in disk use after deleting a materialized view?
and additionally, will nodetool cleanup result in the cleanup of this data - or does that only affect data that is no longer part of a node’s token range?
@avi: With DROP MATERIALIZED VIEW the effect should be immediate. You may want to check if any snapshots were created and delete them too.