v.24.10Performance Improvement
Lock-free Parts Rename Improves SELECT Performance with Parallel INSERT in ReplicatedMergeTree
Lock-free parts rename to avoid INSERT affect SELECT (due to parts lock) (under normal circumstances withfsync_part_directory, QPS of SELECT with INSERT in parallel, increased 2x, under heavy load the effect is even bigger). Note, this only includesReplicatedMergeTreefor now. #64955 (Azat Khuzhin).