- Fixed a large number of bugs across InnoDB, JSON handling, optimizer, replication, performance schema, X plugin, Clone plugin, and other components, including memory leaks and incorrect keyword classifications.
- Deprecated replication variables group_replication_communication_stack and group_replication_ip_allowlist, scheduling them for removal in a future release.
- Upgraded libfido2 to version 1.17.0 and raised the default thread_pool_max_unused_threads from 2 to 32.
Changes in MySQL 9.7.2 (2026-07-28)
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Introduces the Change Stream Applier (CSA) as an opt‑in, per‑channel multi‑threaded replication applier with configurable worker threads (up to 1,024) replacing the MTA.
Fixed numerous bugs across InnoDB, JSON, optimizer, replication, X Plugin, Clone plugin, LOAD DATA handling, memory management, keyword definitions, and server start on Oracle/Red Hat Linux 9.
Critical security patch addressing multiple vulnerabilities