V-Order optimizes Parquet files through sorting, row group distribution, encoding, and compression. While it can boost data compression by 50% and improve read times by 10%—sometimes up to 50%—it comes with a cost: write times can increase by up to 15%. The optimization is disabled by default, giving users control over when to apply it.

The trade-off is clear: faster queries versus slower writes. For analytics workloads with frequent reads, the gains in data read time and storage efficiency often justify the initial write penalty. Importantly, V-Order doesn't interfere with other Delta Lake features like Z-Order, vacuum, or time travel, maintaining full table functionality.

In newer Fabric runtimes (1.3+), the manual setting for V-Order is removed. The engine now automatically applies it during Delta optimization using OPTIMIZE statements, simplifying the process for developers migrating from older versions. This shift streamlines performance tuning without requiring configuration changes.