October 2025 monthly summary focused on strengthening observability and monitoring across Stackable operators, delivering Prometheus-ready metrics exposure, consistent service naming, and TLS-friendly scraping. Work spanned hive-operator, kafka-operator, zookeeper-operator, hdfs-operator, opa-operator, and superset-operator, with changelog updates to reflect changes.

September 2025 monthly summary for stackabletech/kafka-operator focusing on KRaft adoption and Kafka version deprecation, delivering architectural improvements, self-managed cluster capabilities, and improved developer documentation. The work advances the product toward ZooKeeper removal and simplifies 운영 (operational) workflows for operators and users.

Concise monthly summary for 2025-08 focusing on key business value and technical achievements for stackabletech/opa-operator.

June 2025 monthly summary: Delivered two critical feature updates across opa-operator and hdfs-operator, focusing on broader product integration and stronger data security. Documentation and configuration improvements underpin easier onboarding and safer defaults, driving customer value. No major bugs fixed were reported in this period.

May 2025: Added experimental Microsoft Entra ID user/group data integration to opa-operator, establishing enterprise identity data flow for RBAC and automation. Implemented the Entra-backed user-info-fetcher backend, updated CRDs, and documented usage to enable a controlled adoption path. No major bugs reported; groundwork laid for production-grade rollout and future metrics on identity data sync.

April 2025: Delivered targeted authentication guidance in the Superset operator to clarify Flask preferred_username requirements, aligned with Flask-AppBuilder references to reduce misconfiguration and improve developer onboarding.

March 2025 performance overview: Cross-repo upgrade and lifecycle policy improvements for Stackable operators, focusing on upgrade readiness, documentation alignment, and compatibility enhancements with data platforms. Key outcomes include release lifecycle policy updates for 4.x in hive-operator, a HDFS version bump to 3.4.1 across druid-operator and hdfs-operator, deprecation guidance for older operator versions, and expanded OPA compatibility documentation.

January 2025 monthly summary for stackabletech/druid-operator: Delivered enhanced Kubernetes CustomResource event aggregation to improve operator observability and event management. Upgraded operator-rs to v0.84.1 and refreshed related dependencies, enabling more reliable CR lifecycle handling and easier troubleshooting. The changes reduce event noise, improve visibility into CR activity, and establish a solid foundation for future scalability and proactive alerting.

Month: 2024-11 — This month delivered scalable multi-Stacklet deployments across the stackable operators, hardened testing coverage, and a refreshed dependency/upstream alignment to SUP-148. The work enhances deployment scalability, isolation, and operational efficiency while maintaining robust test validation and governance.