April 2026 (2026-04): Focused on stabilizing CDC data streams and improving dependency security. Delivered a targeted bug fix for CDC emission in multi-shard transactions after tablet splits and updated critical third-party libraries (curl and OpenSSL). Achievements include added test coverage, safety checks aligned with single-shard handling, and reviews that ensured comprehensive validation. These efforts reduce CDC noise, prevent potential replication deadlocks, and improve overall security posture.

March 2026 focused on stabilizing CDC streaming for yugabyte-db under multi-level tablet splits. Fixed a critical duplication bug in GetTabletListToPollForCDC across 3+ generations by reordering the ancestor walk logic and introducing a dual-role handling path, ensuring only active or appropriately polled tablets are included. Expanded end-to-end test coverage for three-generation lifecycles, added a reusable should_include_parent helper, and ensured lint/import consistency. Also extended connector validation with Gen2-split scenarios to improve reliability in Debezium-YugabyteDB integration. Result: more reliable CDC, reduced downstream duplicates, and cleaner, maintainable code for future scale.

February 2026 monthly summary for yugabyte/yugabyte-db focusing on CDC improvements and stability in the CDC pipeline. Delivered a memory-predictable CDC snapshot batching mechanism, hardened change retrieval under concurrent log lifecycle events, and expanded test coverage to validate correctness and resilience. These changes reduce runtime memory variance, prevent crashes in streaming CDC, and improve overall reliability for downstream replication and analytics workloads.

January 2026: Strengthened data delivery reliability, expanded data lineage capabilities, and improved upgrade safety across YugabyteDB and Debezium deployments. Delivered CDC robustness, local-RPC address handling fixes, and default export snapshot for replication slots in YugabyteDB, alongside ORIGIN message support in Debezium PostgreSQL connector. These changes delivered tangible business value by reducing CDC flakiness, ensuring consistent connections in cloud/K8s environments, and simplifying upgrade/restore workflows, while enabling origin-tracking for cross-transaction data changes.

December 2025: Delivered Change Data Capture (CDC) with Savepoints and Rollback support behind a runtime flag for yugabyte/yugabyte-db. Implemented gating via gflag to enable/disable the feature and prevent CDC consumers from seeing data from rolled-back transactions. Added comprehensive tests validating rollback behavior across full transactions with savepoints, including scenarios covered by CDCSDKConsumptionConsistentChangesTest.TestCDCWithSavePoint. Temporarily suppressed a readability/fn_size lint issue in GetChangesForCDCSDK to unblock progress (tracked separately in https://github.com/yugabyte/yugabyte-db/issues/29772). The work was driven by commit 80b411081e2edd50e32f7623d2c78264e4fd55bb with differential revision D49149. This delivers safer CDC rollouts, improved data correctness, and stronger reliability for downstream consumers.