parts_killer_max_condemned_parts_per_batch
Maximum number of condemned parts a SharedMergeTree table fetches from Keeper in a single cleanup cycle. Bounding the batch keeps the listing and multi-get within the Keeper operation timeout, so cleanup keeps making progress even when a table has accumulated a very large condemned-parts backlog. Must be greater than zero: a value of0 would make Keeper return an empty listing every cycle, permanently stalling cleanup. Only available in ClickHouse Cloud