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| 1 | +--- |
| 2 | +layout: post |
| 3 | +title: "Apache Arrow ADBC 16 (Libraries) Release" |
| 4 | +date: "2025-01-21 00:00:00" |
| 5 | +author: pmc |
| 6 | +categories: [release] |
| 7 | +--- |
| 8 | +<!-- |
| 9 | +{% comment %} |
| 10 | +Licensed to the Apache Software Foundation (ASF) under one or more |
| 11 | +contributor license agreements. See the NOTICE file distributed with |
| 12 | +this work for additional information regarding copyright ownership. |
| 13 | +The ASF licenses this file to you under the Apache License, Version 2.0 |
| 14 | +(the "License"); you may not use this file except in compliance with |
| 15 | +the License. You may obtain a copy of the License at |
| 16 | +
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| 17 | +http://www.apache.org/licenses/LICENSE-2.0 |
| 18 | +
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| 19 | +Unless required by applicable law or agreed to in writing, software |
| 20 | +distributed under the License is distributed on an "AS IS" BASIS, |
| 21 | +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 22 | +See the License for the specific language governing permissions and |
| 23 | +limitations under the License. |
| 24 | +{% endcomment %} |
| 25 | +--> |
| 26 | + |
| 27 | +The Apache Arrow team is pleased to announce the version 16 release of |
| 28 | +the Apache Arrow ADBC libraries. This release includes [**15 |
| 29 | +resolved issues**][1] from [**11 distinct contributors**][2]. |
| 30 | + |
| 31 | +This is a release of the **libraries**, which are at version 16. The |
| 32 | +[**API specification**][specification] is versioned separately and is at |
| 33 | +version 1.1.0. |
| 34 | + |
| 35 | +The subcomponents are versioned independently: |
| 36 | + |
| 37 | +- C/C++/GLib/Go/Python/Ruby: 1.4.0 |
| 38 | +- C#: 0.16.0 |
| 39 | +- Java: 0.16.0 |
| 40 | +- R: 0.16.0 |
| 41 | +- Rust: 0.16.0 |
| 42 | + |
| 43 | +The release notes below are not exhaustive and only expose selected |
| 44 | +highlights of the release. Many other bugfixes and improvements have |
| 45 | +been made: we refer you to the [complete changelog][3]. |
| 46 | + |
| 47 | +## Release Highlights |
| 48 | + |
| 49 | +This release focused mostly on bugfixes. |
| 50 | + |
| 51 | +The C# ADO.NET adapter can now parse connection properties from the connection string ([#2352](https://github.com/apache/arrow-adbc/pull/2352)). The driver for various Thrift-based systems (Hive/Impala/Spark) now supports timeout options ([#2312](https://github.com/apache/arrow-adbc/pull/2312)). A package was added to wrap the Arrow Flight SQL driver (written in Go) from C# ([#2214](https://github.com/apache/arrow-adbc/pull/2214)). |
| 52 | + |
| 53 | +The PostgreSQL driver was fixed to properly return unknown types as `arrow.opaque` again ([#2450](https://github.com/apache/arrow-adbc/pull/2450)) and to avoid issuing an unnecessary `COMMIT` which would cause the driver and connection state to get out of sync ([#2412](https://github.com/apache/arrow-adbc/pull/2412)). |
| 54 | + |
| 55 | +Python packages only require manylinux2014 again; the baseline glibc requirement was unintentionally raised in the last release and has now been reverted ([#2350](https://github.com/apache/arrow-adbc/issues/2350)). |
| 56 | + |
| 57 | +A breaking change was made in the unstable Rust APIs to return a `Result` from a fallible function ([#2334](https://github.com/apache/arrow-adbc/pull/2334)). An `adbc_snowflake` crate was added to wrap the Snowflake driver (written in Go) into the Rust APIs, though it is not yet being published ([#2207](https://github.com/apache/arrow-adbc/pull/2207)). |
| 58 | + |
| 59 | +## Contributors |
| 60 | + |
| 61 | +``` |
| 62 | +$ git shortlog --perl-regexp --author='^((?!dependabot\[bot\]).*)$' -sn apache-arrow-adbc-15..apache-arrow-adbc-16 |
| 63 | + 23 David Li |
| 64 | + 8 Matthijs Brobbel |
| 65 | + 4 davidhcoe |
| 66 | + 3 Bruce Irschick |
| 67 | + 2 Matt Topol |
| 68 | + 1 Albert LI |
| 69 | + 1 Cocoa |
| 70 | + 1 Curt Hagenlocher |
| 71 | + 1 Jacob Wujciak-Jens |
| 72 | + 1 Julian Brandrick |
| 73 | + 1 qifanzhang-ms |
| 74 | +``` |
| 75 | + |
| 76 | +## Roadmap |
| 77 | + |
| 78 | +There is some discussion on a potential second revision of ADBC to include more missing functionality and asynchronous API support. For more, see the [milestone](https://github.com/apache/arrow-adbc/milestone/8); the proposed C Data Interface extensions have been accepted. |
| 79 | + |
| 80 | +We would welcome comments on APIs that could be added or extended, for instance see [#1704](https://github.com/apache/arrow-adbc/issues/1704). |
| 81 | + |
| 82 | +## Getting Involved |
| 83 | + |
| 84 | +We welcome questions and contributions from all interested. Issues |
| 85 | +can be filed on [GitHub][4], and questions can be directed to GitHub |
| 86 | +or the [Arrow mailing lists][5]. |
| 87 | + |
| 88 | +[1]: https://github.com/apache/arrow-adbc/milestone/20 |
| 89 | +[2]: #contributors |
| 90 | +[3]: https://github.com/apache/arrow-adbc/blob/apache-arrow-adbc-16/CHANGELOG.md |
| 91 | +[4]: https://github.com/apache/arrow-adbc/issues |
| 92 | +[5]: {% link community.md %} |
| 93 | +[specification]: https://arrow.apache.org/adbc/16/format/specification.html |
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