ClickHouse now removes empty parts from tables after they are pruned by TTL rules, mutations, or the collapsing merge algorithm.
Why it matters
This feature ensures that parts of data that become empty as a result of TTL-based pruning, mutation operations, or the collapsing merge algorithm are automatically removed. It helps to keep the data storage clean and efficient by preventing accumulation of empty parts, improving overall storage usage and query performance.How to use it
The feature is applied automatically during existing table maintenance operations involving TTL, mutations, or collapsing merge. No additional user action is required to enable it.