aihuaxu commented on code in PR #171: URL: https://github.com/apache/parquet-site/pull/171#discussion_r2839167103
########## content/en/blog/features/variant.md: ########## @@ -0,0 +1,257 @@ +--- +title: "Introducing Variant in Apache Parquet for Semi-Structured Data" +date: 2026-02-14 +description: "Native Variant Type in Apache Parquet" +author: "[Aihua Xu](https://github.com/aihuaxu), [Andrew Lamb](https://github.com/alamb)" +categories: ["features"] +--- + +## Introduction + +The Apache Parquet community is excited to announce the addition of the **Variant type**—a feature that brings native support for semi-structured data to Parquet, significantly improving efficiency compared to less efficient formats such as JSON. This marks a significant addition to Parquet, demonstrating how the format continues to evolve to meet modern data engineering needs. + +While Apache Parquet has long been the standard for structured data where each value has a fixed and known type, handling heterogeneous, nested data often required a compromise: either store it as a costly-to-parse JSON string or flatten it into a rigid schema. The introduction of the Variant logical type provides a native, high-performance solution for semi-structured data that is already seeing rapid uptake across the ecosystem. + +--- + +## What is Variant? + +**Variant** is a self-describing data type designed to efficiently store and process semi-structured data—JSON-like documents with arbitrary and evolving schemas. + +--- + +## Why Variant? + +Unlike traditional approaches that store JSON as text strings and require full parsing to access any field, making queries slow and resource-intensive, Variant solves this by storing data in a **structured binary format** that enables direct field access through offset-based navigation. Query engines can jump directly to nested fields without deserializing the entire document, dramatically improving performance. Review Comment: I updated a little bit. Please take a look. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
