Apache Data Lakehouse Weekly: July 16 to July 23, 2026

Short summary

A weekly digest of Apache data lakehouse mailing list activity covering Iceberg, Parquet, Arrow, Polaris, DataFusion, and Ossie. Key debates include deprecating equality deletes in Iceberg V4, a new Terraform provider for Iceberg infrastructure-as-code, and a proposal to add Vortex as a file format. The 327 messages across six lists show a maturing stack focused on cross-layer guarantees.

• •Iceberg V4 proposal to deprecate equality deletes gains streaming-community support with Flink-side conversion progress
• •Iceberg Rust 0.10.0 released; Terraform provider v0.1.0 RC1 signals infrastructure-as-code support is near
• •Vortex file format proposal for Iceberg splits criteria from candidate to structure the debate

Generated with AI, which can make mistakes.