# jorgecarleitao/arrow2

Transmute-free Rust library to work with the Arrow format

Repository: https://github.com/jorgecarleitao/arrow2
Canonical: https://ross.abutalabs.com/products/arrow2
Language: Rust
License: Apache-2.0
License Family: permissive
Archived: true
Last push: 2024-02-27T19:55:35+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 2033, "days_push": 918, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: archived
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1064, forks 225 (observed 2026-08-28T04:03:26.568333+00:00)

## What it is
A Rust implementation of the Apache Arrow columnar in-memory format, supporting IO with Parquet, Avro, CSV, IPC, and Flight, plus compute kernels. It was one of the most feature-complete Arrow implementations but is officially unmaintained as of January 2024.

## Use cases
- read and write parquet files in rust
- work with apache arrow columnar data in rust
- convert csv to arrow ipc format
- read avro files fast in rust
- columnar data processing and compute kernels in rust
- interop between rust and arrow-based data systems

## When to choose
- you need Arrow/Parquet/Avro support in Rust and are pinned to an older, stable codebase
- you need the C data interface for FFI interop with other Arrow implementations
- you need fine-grained control over bitmaps, mutability, and zero-copy layouts

## When to avoid
- starting a new project - the crate is explicitly unmaintained since 2024-01-17
- you need bug fixes, security patches, or new Arrow spec features
- you need Decimal 256 or deeply nested Parquet types
- consider the official apache/arrow-rs crate instead

## Facets
- artifact type: library
- maturity: abandoned
- function: serialization, data-science, etl
- domain: databases, big-data, analytics
- platform: rust, cross-platform
- tags: apache-arrow, parquet, avro, columnar-format, unmaintained, data-engineering

## Member repositories
- jorgecarleitao/arrow2 (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:26.568333+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T06:56:04.751252+00:00, confidence not recorded.
  - readme: https://github.com/jorgecarleitao/arrow2 (fetched 2026-08-28T04:03:26.568333+00:00, sha 73c4dfdf785f)
  - registry_crates: https://crates.io/api/v1/crates/arrow2 (fetched 2026-08-29T12:57:43.818871+00:00, sha a5c0c2a77135)
- Data as of 2026-08-30T08:39:29.467469+00:00.