v.22.11Improvement

Remove Covered Parts to Prevent Replication Delay

Remove covered parts for fetched part (to avoid possible replication delay grows). #39737 (Azat Khuzhin).
Optimize replication by removing covered parts from fetched parts to prevent replication delay growth.

Why it matters

This feature addresses the issue of replication delays potentially increasing over time. By removing covered parts from fetched parts during replication, it reduces unnecessary data processing and storage, thereby improving replication efficiency and consistency.

How to use it

This optimization is applied automatically in the replication process; users do not need to manually enable it. It is integrated into the ClickHouse replication mechanism to enhance performance transparently.