April 2026 monthly summary for renovate-bot/apache-_-polaris: Focused on improving developer experience through precise documentation of credential handling in Iceberg + Spark and reinforcing the correct usage patterns for vended credentials with remove_orphan_files.

February 2026: Delivered AWS STS Role Session Name Sanitization (AWS STS AssumeRole compatibility) for renovate-bot/apache-_-polaris. Implemented a dedicated AwsRoleSessionNameSanitizer utility to replace invalid characters and truncate to 64 characters, ensuring compliance with AWS session name rules. Integrated sanitization into the credentials path and storage layer so principal names are sanitized when INCLUDE_PRINCIPAL_NAME_IN_SUBSCOPED_CREDENTIAL is enabled. Added unit tests to validate sanitizer behavior and AWS pattern adherence. Result: reduced risk of AssumeRole validation errors due to malformed role session names and improved reliability for cross-account access. Technologies/skills demonstrated include Java utility development, regex-based sanitization, integration testing, and feature-driven code changes with proper test coverage.

December 2025 monthly summary focusing on delivering performance, stability, and developer experience across two key repos: pinterest/starrocks and metabase/metabase. The work emphasizes business value through faster data access, improved reliability, and easier integration for users.