February 2026 monthly summary: This month focused on advancing Iceberg integration, expanding time-data support, and reinforcing code quality across Velox repos. In facebookincubator/velox, we delivered a new IcebergDataSource and IcebergConfig to simplify Iceberg table reads and reduce Hive dependency, while addressing reliability by per-file writer rotation corrections and honoring Parquet max-target-file-size. Time/data representation improvements were introduced, including DuckDB→Velox TIME conversion, NaN statistics provisioning in Parquet writer, and an ISO-8601 microseconds helper. A targeted internal maintenance effort refactored the Arrow writer to Velox standards for improved readability and long-term maintainability. On IBM/velox, stability work focused on restoring backward compatibility by reverting Iceberg-related changes to keep IcebergInsertTableHandle compatibility and maintain proper parquet linkage, reducing downstream risk.

August 2025 (IBM/velox): Fixed a critical Ubuntu 22.04 setup issue and strengthened environment provisioning, delivering improved reliability for development and CI. This work reduces setup failures, accelerates onboarding, and contributes to more predictable deployments across Velox environments.

Monthly work summary for 2025-07 focused on prestodb/presto. Key accomplishment: delivered a cross-OS improvement to dependency management by unifying the gperf download URL across CentOS and macOS setup scripts (ftp.gnu.org). This enhances reliability of environment provisioning and developer onboarding across platforms.