TECHNOLOGY PROFILE · TECH-0011
Apache Parquet
Columnar file format with encoding and compression.
Reference link only — not reviewed this edition. This profile preserves the prepared catalog’s original descriptions. Advantages depend on the workload; comparisons are editorial, not benchmark results.
Where it has an edge
Column projection and predicate-aware reads reduce IO versus scanning row-oriented CSV.
Best-fit problems
Large analytic datasets and reproducible training snapshots.
Tradeoffs & cautions
Frequent small updates and tiny files are poor fits.
What to test before choosing
Run the complete pipeline twice; test idempotency, lineage, point-in-time correctness and recovery from partial failure.
Runtime & hardware
Local or distributed data systems
Access & licensing
Open-source; hosted services may differ
Execution
Local / self-hosted
Lifecycle
Not independently audited
Comparison basis
Editorial problem-fit judgement; no head-to-head benchmark performed
Connected concepts
Alternatives to investigate
Apache Arrow · CSV · Zarr