Apache Arrow ADBC 0.4.0 (Libraries) Release

Published 15 May 2023
By The Apache Arrow PMC (pmc)

The Apache Arrow team is pleased to announce the 0.4.0 release of the Apache Arrow ADBC libraries. This covers includes 47 resolved issues from 8 distinct contributors.

This is a release of the libraries, which are at version 0.4.0. The API specification is versioned separately and is at version 1.0.0.

The release notes below are not exhaustive and only expose selected highlights of the release. Many other bugfixes and improvements have been made: we refer you to the complete changelog.

Release Highlights

A Go-based driver for Snowflake was added, along with bindings for Python and R.

The PostgreSQL driver now has much better support for different types, and properly handles NULL values. It now also implements AdbcConnectionGetTableSchema. All C/C++ components have been consolidated into a single build project, simplifying integration with IDEs.

Several ArrowBuf leaks in the Java libraries have been fixed, along with miscellaneous bugs in the JDBC adapter. There was breaking change in the Java libraries: static driver instances were removed, as this was prone to the aformentioned leaks. Instead, AdbcDriver instances can now be created with a BufferAllocator, giving the application control over allocations.

The Python, GLib, and Ruby bindings expose more of the API functions. The Python bindings are now tested against the polars dataframe project, which has experimental integration with ADBC. The release process was fixed to properly upload the Windows Python wheels. The R bindings now include packages for the PostgreSQL driver.

There is a known issue with the Snowflake driver: it will not build on non-x86_64 (AMD64) platforms, including Linux/macOS arm64/aarch64. This has already been fixed for the next release.

Contributors

$ git shortlog --perl-regexp --author='^((?!dependabot\[bot\]).*)$' -sn apache-arrow-adbc-0.3.0..apache-arrow-adbc-0.4.0
    31	David Li
    15	Sutou Kouhei
     9	Dewey Dunnington
     7	William Ayd
     5	Matt Topol
     1	Jacob Marble
     1	Tornike Gurgenidze
     1	eitsupi

Roadmap

Work for the proposed 1.1.0 API revision has begun on a new branch. This is not currently targeting any release of the ADBC libraries.

Getting Involved

We welcome questions and contributions from all interested. Issues can be filed on GitHub, and questions can be directed to GitHub or the Arrow mailing lists.