The ORC team is excited to announce the release of ORC v2.2.2.

• Released: 12 January 2026
• Source code: orc-2.2.2.tar.gz
• GPG Signature signed by Dongjoon Hyun (34F0FC5C)
• Git tag: rel/release-2.2.2
• Maven Central: ORC 2.2.2
• SHA 256: 4214bfc8e0131630…
• Fixed issues: ORC-2.2.2

The bug fixes:

• ORC-2027: [C++] Fix undefined behavior in DoubleColumnReader::readFloat()
• ORC-2032: Upgrade zstd-jni to 1.5.7-6
• ORC-2040: Upgrade commons-cli to 1.11.0
• ORC-2051: Fix Meson build to use ORC Format 1.1.1

The test changes:

• ORC-2037: Upgrade Spark to 4.1.0 and Scala to 2.13.17
• ORC-2041: Update cpp-linter-action hash to match ASF infra
• ORC-2050: Add MacOS 26 to meson/macos-cpp-check and use mainly in build GitHub Action job
• ORC-2058: Upgrade commons-lang3 to 3.20.0

The build and dependency changes:

• ORC-2042 Upgrade maven.version to 3.9.12

The documentation changes:

• ORC-2057 Add Pandas page at Using in Python section