Docs: add blog post for C++ 0.3.0 release #16817
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| date: 2026-06-14 | ||||||
| title: Apache Iceberg C++ 0.3.0 Release | ||||||
| slug: apache-iceberg-cpp-0.3.0-release | ||||||
| authors: | ||||||
| - iceberg-pmc | ||||||
| categories: | ||||||
| - release | ||||||
| --- | ||||||
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| <!-- | ||||||
| - Licensed to the Apache Software Foundation (ASF) under one or more | ||||||
| - contributor license agreements. See the NOTICE file distributed with | ||||||
| - this work for additional information regarding copyright ownership. | ||||||
| - The ASF licenses this file to You under the Apache License, Version 2.0 | ||||||
| - (the "License"); you may not use this file except in compliance with | ||||||
| - the License. You may obtain a copy of the License at | ||||||
| - | ||||||
| - http://www.apache.org/licenses/LICENSE-2.0 | ||||||
| - | ||||||
| - Unless required by applicable law or agreed to in writing, software | ||||||
| - distributed under the License is distributed on an "AS IS" BASIS, | ||||||
| - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||||||
| - See the License for the specific language governing permissions and | ||||||
| - limitations under the License. | ||||||
| --> | ||||||
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| The Apache Iceberg community is pleased to announce the 0.3.0 release of Apache [Iceberg C++](https://github.com/apache/iceberg-cpp). This release includes [over 140 pull requests](https://github.com/apache/iceberg-cpp/compare/v0.2.0...v0.3.0) from 23 contributors, including 11 first-time contributors. | ||||||
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| `iceberg-cpp` is a native C++ implementation of the Apache Iceberg table format, providing libraries for reading, writing, and managing Iceberg tables in C++ applications. | ||||||
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| <!-- more --> | ||||||
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| ## Release Highlights | ||||||
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| ### Scan Planning and Data Access | ||||||
| - [Incremental scan APIs](https://github.com/apache/iceberg-cpp/pull/559), [incremental append scans](https://github.com/apache/iceberg-cpp/pull/590), and [incremental changelog scans](https://github.com/apache/iceberg-cpp/pull/611) for planning table changes between snapshots | ||||||
| - Merge-on-read data access with a [MOR file scan task reader](https://github.com/apache/iceberg-cpp/pull/657), [delete filter support](https://github.com/apache/iceberg-cpp/pull/650), and a [DeleteLoader for position and equality delete files](https://github.com/apache/iceberg-cpp/pull/610) | ||||||
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| - [Column selection in table scan planning](https://github.com/apache/iceberg-cpp/pull/550) and [ManifestGroup file filtering](https://github.com/apache/iceberg-cpp/pull/664) | ||||||
| - [Roaring-based position bitmaps](https://github.com/apache/iceberg-cpp/pull/595), a [position delete index](https://github.com/apache/iceberg-cpp/pull/605), and [range coalescing for position deletes](https://github.com/apache/iceberg-cpp/pull/645) | ||||||
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| ### Table Operations and Maintenance | ||||||
| - [MergingSnapshotUpdate](https://github.com/apache/iceberg-cpp/pull/682) for rewrite-style operations | ||||||
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| - [SnapshotManager](https://github.com/apache/iceberg-cpp/pull/542) support and [retried transaction commits](https://github.com/apache/iceberg-cpp/pull/626) | ||||||
| - Snapshot expiration cleanup strategies for [reachable file cleanup](https://github.com/apache/iceberg-cpp/pull/592) and [incremental file cleanup](https://github.com/apache/iceberg-cpp/pull/648) | ||||||
| - [Partition statistics updates](https://github.com/apache/iceberg-cpp/pull/538) and [schema update mapping](https://github.com/apache/iceberg-cpp/pull/561) | ||||||
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| ### Catalogs and Integrations | ||||||
| - REST catalog improvements including [initial OAuth2 support](https://github.com/apache/iceberg-cpp/pull/577), [OAuth2 token auto-refresh](https://github.com/apache/iceberg-cpp/pull/646), [Basic authentication](https://github.com/apache/iceberg-cpp/pull/564), [snapshot loading mode](https://github.com/apache/iceberg-cpp/pull/543), [namespace separators](https://github.com/apache/iceberg-cpp/pull/617), and [server-side REST scan planning endpoints](https://github.com/apache/iceberg-cpp/pull/614) | ||||||
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| - [S3 FileIO integration](https://github.com/apache/iceberg-cpp/pull/548) built on Arrow filesystem support | ||||||
| - FileIO interface enrichment with new [InputFile and OutputFile interfaces](https://github.com/apache/iceberg-cpp/pull/641) and [bulk delete support](https://github.com/apache/iceberg-cpp/pull/659) | ||||||
| - [SQL catalog support](https://github.com/apache/iceberg-cpp/pull/693) backed by SQLite, PostgreSQL, and MySQL stores | ||||||
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| ### Metrics and Observability | ||||||
| - Metrics reporter support with [report JSON serialization and reporter loading](https://github.com/apache/iceberg-cpp/pull/589) | ||||||
| - [Avro writer metrics](https://github.com/apache/iceberg-cpp/pull/604) and [Parquet writer metrics](https://github.com/apache/iceberg-cpp/pull/651) | ||||||
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| ### Metadata and File Format Support | ||||||
| - Puffin support with [basic data structures](https://github.com/apache/iceberg-cpp/pull/588), [format constants and JSON serialization](https://github.com/apache/iceberg-cpp/pull/603), and [file reader/writer support](https://github.com/apache/iceberg-cpp/pull/624) | ||||||
| - Iceberg v3 support for the [unknown type](https://github.com/apache/iceberg-cpp/pull/662) and [nanosecond timestamp primitive types](https://github.com/apache/iceberg-cpp/pull/653) | ||||||
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| - Expression serialization with [operation JSON serialization](https://github.com/apache/iceberg-cpp/pull/532), [expression JSON serialization](https://github.com/apache/iceberg-cpp/pull/553), and [typed literal binding after serialization](https://github.com/apache/iceberg-cpp/pull/562) | ||||||
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| ## Contributors | ||||||
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| ``` | ||||||
| $ git shortlog --perl-regexp --author='^((?!dependabot\[bot\]).*)$' -sn v0.2.0..v0.3.0 | ||||||
| 26 Gang Wu | ||||||
| 26 Junwang Zhao | ||||||
| 11 wzhuo | ||||||
| 8 Kevin Liu | ||||||
| 8 Xinli Shang | ||||||
| 7 Feiyang Li | ||||||
| 7 Zehua Zou | ||||||
| 6 lishuxu | ||||||
| 4 Innocent Djiofack | ||||||
| 4 liuxiaoyu | ||||||
| 3 Guotao Yu | ||||||
| 3 ZhaoXuan | ||||||
| 3 slfan1989 | ||||||
| 2 Manu Zhang | ||||||
| 2 Minh Vu | ||||||
| 2 Sebastian Baunsgaard | ||||||
| 2 SkylerLin | ||||||
| 2 姚军 | ||||||
| 1 Jiajia Li | ||||||
| 1 Maxim Zibitsker | ||||||
| 1 Sandeep Gottimukkala | ||||||
| 1 Sung Yun | ||||||
| 1 Yingfan Guo | ||||||
| ``` | ||||||
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| This release welcomes 11 first-time contributors to Apache Iceberg C++: @evindj, @manuzhang, @mzibitsker, @fallintoplace, @gsandeep1241, @Baunsgaard, @linguoxuan, @sungwy, @sentomk, @zhaoxuan1994, and @SYaoJun. | ||||||
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| We thank all contributors for their efforts in making this release possible! | ||||||
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| ## Roadmap for 0.4.0 | ||||||
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| The community is actively tracking the next release in [#637](https://github.com/apache/iceberg-cpp/issues/637), with a focus on filling out Iceberg v3 support and expanding table maintenance APIs. | ||||||
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| ## Getting Involved | ||||||
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| We welcome questions and contributions from all interested. Issues can be filed on [GitHub](https://github.com/apache/iceberg-cpp/issues), and questions can be directed to GitHub or the [Iceberg dev mailing list](https://iceberg.apache.org/community/#mailing-lists). | ||||||
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Should we remove associated URLs? Sometimes a feature involves multiple PRs so it might be confusing to do this. One can always find interesting PRs from https://github.com/apache/iceberg-cpp/releases/tag/v0.3.0. We can just highlight what features have been added in a few sentences.
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Yeah, I noticed that the Iceberg C++ 0.2.0 release blog didn't include URLs. But after checking the recent release blogs for Java, Rust, and Go, I saw that they all include relevant URLs, which is why I added them.
I'm not sure if there's a consensus on this. I can remove them if they're not helpful.