Parquet Column Mapper

---
name: "Parquet Column Mapper"
slug: "parquet-column-mapper"
description: "Reads and transforms Apache Parquet file metadata and column statistics using PyArrow and the Parquet Thrift specification. Maps column types across Delta Lake, Iceberg, and Hudi table formats."
github_stars: 387
verification: "security_reviewed"
source: "https://github.com/ironSource/parquetjs"
category: "Data Extraction & Transformation"
framework: "MCP"
tool_ecosystem:
  github_repo: "ironsource/parquetjs"
  github_stars: 387
  npm_package: "parquetjs"
  npm_weekly_downloads: 170660
---

# Parquet Column Mapper

Reads and transforms Apache Parquet file metadata and column statistics using PyArrow and the Parquet Thrift specification. Maps column types across Delta Lake, Iceberg, and Hudi table formats.

## Installation

Use the upstream install or setup path that matches your environment:
- $ npm install parquetjs

Requirements and caveats from upstream:
- This project requires a major overhaul, as well as handling and sorting through dozens of issues and prs.
- fully asynchronous, pure node.js implementation of the Parquet file format
- To use parquet.js with node.js, install it using npm:

Basic usage or getting-started notes:
- ------------
- --------------------
- Once you have installed the parquet.js library, you can import it as a single

- Source: https://github.com/ironSource/parquetjs
- Extracted from upstream docs: https://raw.githubusercontent.com/ironSource/parquetjs/HEAD/README.md

## Source

- [Agent Skill Exchange](https://agentskillexchange.com/skills/parquet-column-mapper/)