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new 8bb3713878 Site: Add Iceberg C++ 0.4.0 release blog post (#18273)
8bb3713878 is described below
commit 8bb3713878e1df1d8d14906bc930b536e9377fee
Author: Manu Zhang <[email protected]>
AuthorDate: Wed Sep 30 04:25:20 2026 +0800
Site: Add Iceberg C++ 0.4.0 release blog post (#18273)
Generated-by: Claude Code
Co-authored-by: Claude Opus 5 (1M context) <[email protected]>
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+---
+date: 2026-09-26
+title: Apache Iceberg C++ 0.4.0 Release
+slug: apache-iceberg-cpp-0.4.0-release
+authors:
+ - iceberg-pmc
+categories:
+ - release
+---
+
+<!--
+ - 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.
+ -->
+
+The Apache Iceberg community is pleased to announce the 0.4.0 release of
Apache [Iceberg C++](https://github.com/apache/iceberg-cpp). This release
includes [over 160 pull
requests](https://github.com/apache/iceberg-cpp/compare/v0.3.0...v0.4.0) from
26 contributors, including 12 first-time contributors.
+
+`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.
+
+<!-- more -->
+
+## Release Highlights
+
+### Iceberg v3 Support
+- [v3 type definitions](https://github.com/apache/iceberg-cpp/pull/752) and
[v3 geometry and geography
support](https://github.com/apache/iceberg-cpp/pull/880)
+- Column default values end to end: [representation, serialization, and
validation](https://github.com/apache/iceberg-cpp/pull/746), [Parquet reads of
missing fields](https://github.com/apache/iceberg-cpp/pull/792), [Avro reads of
missing fields](https://github.com/apache/iceberg-cpp/pull/800), and
[`UpdateSchema` support](https://github.com/apache/iceberg-cpp/pull/793)
+- Row lineage: [writing snapshot row lineage fields at the top
level](https://github.com/apache/iceberg-cpp/pull/791), [reading row lineage
metadata columns](https://github.com/apache/iceberg-cpp/pull/822), and
[retrying stale row-lineage
validation](https://github.com/apache/iceberg-cpp/pull/794)
+- Deletion vectors: [`deletion-vector-v1` blob read and
write](https://github.com/apache/iceberg-cpp/pull/777), [merging multiple DVs
in `MergingSnapshotUpdate`](https://github.com/apache/iceberg-cpp/pull/708),
and [Puffin and DV support moved into the core
library](https://github.com/apache/iceberg-cpp/pull/900)
+
+### Table Update APIs
+- New snapshot-producing operations:
[`DeleteFiles`](https://github.com/apache/iceberg-cpp/pull/709),
[`RowDelta`](https://github.com/apache/iceberg-cpp/pull/721),
[`OverwriteFiles`](https://github.com/apache/iceberg-cpp/pull/741),
[`RewriteFiles`](https://github.com/apache/iceberg-cpp/pull/751),
[`ReplacePartitions`](https://github.com/apache/iceberg-cpp/pull/776) (now
[exposed on `Table` and
`Transaction`](https://github.com/apache/iceberg-cpp/pull/925)), and [merge
append](https://git [...]
+- [Retryable and cleanup-safe table
updates](https://github.com/apache/iceberg-cpp/pull/868),
[`FileCleanupStrategy` hardened with retries and parallel
deletes](https://github.com/apache/iceberg-cpp/pull/649), and [cleanup of
delete files from expired
manifests](https://github.com/apache/iceberg-cpp/pull/779)
+- Catalog operations including [`RenameTable` in
`InMemoryCatalog`](https://github.com/apache/iceberg-cpp/pull/742) and [purge
support in `DropTable` for the in-memory and SQL
catalogs](https://github.com/apache/iceberg-cpp/pull/744)
+
+### Catalogs and FileIO
+- REST catalog gains [SigV4
authentication](https://github.com/apache/iceberg-cpp/pull/616), a
[session-aware catalog](https://github.com/apache/iceberg-cpp/pull/750),
[OAuth2 token exchange
sessions](https://github.com/apache/iceberg-cpp/pull/867), and [per-table
FileIO bound from vended storage
credentials](https://github.com/apache/iceberg-cpp/pull/719)
+- [`ResolvingFileIO`](https://github.com/apache/iceberg-cpp/pull/828) selects
a FileIO by location scheme and forwards vended credentials, backed by a
[registry-driven resolution](https://github.com/apache/iceberg-cpp/pull/889),
with [S3-compatible schemes](https://github.com/apache/iceberg-cpp/pull/703)
and the [`oss` scheme](https://github.com/apache/iceberg-cpp/pull/893) supported
+- Hive Metastore groundwork with [vendored HMS IDL and generated
bindings](https://github.com/apache/iceberg-cpp/pull/749), an [`iceberg_hive`
library](https://github.com/apache/iceberg-cpp/pull/753), and [`HmsClient`
connection lifecycle and URI
parsing](https://github.com/apache/iceberg-cpp/pull/796)
+- Closer alignment with the Java implementation for [REST table update
serialization](https://github.com/apache/iceberg-cpp/pull/716) and [REST error
handling](https://github.com/apache/iceberg-cpp/pull/763)
+
+### Scan Planning and Performance
+- [Lazy scan planning streams](https://github.com/apache/iceberg-cpp/pull/873)
and a [fallible iterator
utility](https://github.com/apache/iceberg-cpp/pull/905)
+- Parallelism for [reading
manifests](https://github.com/apache/iceberg-cpp/pull/697), [writing
manifests](https://github.com/apache/iceberg-cpp/pull/778), and [update and
scan processing](https://github.com/apache/iceberg-cpp/pull/770), plus an [LRU
cache](https://github.com/apache/iceberg-cpp/pull/891)
+- Metadata tables with a [base metadata table
interface](https://github.com/apache/iceberg-cpp/pull/607) and [streaming
`SnapshotsTable` scans](https://github.com/apache/iceberg-cpp/pull/801)
+- Arrow data access via
[`ArrowRowBuilder`](https://github.com/apache/iceberg-cpp/pull/780) and
[reading list columns as
`large_list`](https://github.com/apache/iceberg-cpp/pull/714)
+- Metrics with [commit and scan reporting
integration](https://github.com/apache/iceberg-cpp/pull/701), [Parquet NaN
metrics collected during
writes](https://github.com/apache/iceberg-cpp/pull/727), and a [unique-value
optimization for
`notEq`/`notIn`](https://github.com/apache/iceberg-cpp/pull/754)
+
+### Logging
+- A pluggable logging stack built up across the release:
[`LogLevel`](https://github.com/apache/iceberg-cpp/pull/722), the [`Logger`
interface and default logger](https://github.com/apache/iceberg-cpp/pull/723),
a [`std::cerr` backend](https://github.com/apache/iceberg-cpp/pull/724),
[logging macros](https://github.com/apache/iceberg-cpp/pull/725), an [optional
spdlog backend behind
`ICEBERG_SPDLOG`](https://github.com/apache/iceberg-cpp/pull/726), and a
[`Loggers` registry](https://gith [...]
+- [Transaction commit lifecycle
logging](https://github.com/apache/iceberg-cpp/pull/890) as the first consumer
+
+### Build Changes
+- [Meson build support has been
removed](https://github.com/apache/iceberg-cpp/pull/935); CMake is now the only
supported build system
+- Dependency upgrades to [Arrow
25.0.0](https://github.com/apache/iceberg-cpp/pull/858) and [nanoarrow
0.9.0](https://github.com/apache/iceberg-cpp/pull/871)
+
+## Contributors
+
+```
+$ git shortlog --perl-regexp --author='^((?!dependabot\[bot\]).*)$' -sn
v0.3.0..v0.4.0
+ 23 Junwang Zhao
+ 14 Gang Wu
+ 13 Manu Zhang
+ 13 Zehua Zou
+ 13 wzhuo
+ 10 Abanoub Doss
+ 10 Minh Vu
+ 9 Xin Huang
+ 8 kamcheungting-db
+ 7 Jiajia Li
+ 5 YangJie
+ 3 Kevin Liu
+ 3 Rahul Goel
+ 3 Xinli Shang
+ 3 lishuxu
+ 3 liuxiaoyu
+ 2 Anupam Yadav
+ 2 Joey
+ 2 Yuya Ebihara
+ 1 Huangshi Tian
+ 1 Innocent Djiofack
+ 1 Rahul Shivu Mahadev
+ 1 Sreesh Maheshwar
+ 1 Timothy Wang
+ 1 ZhaoXuan
+ 1 kid
+```
+
+This release welcomes 12 first-time contributors to Apache Iceberg C++:
@kamcheungting-db, @All-less, @goel-skd, @abnobdoss, @ebyhr, @huan233usc,
@yadavay-amzn, @timothyw553, @LuciferYang, @Angelia-Wang, @rahulsmahadev, and
@u70b3.
+
+We thank all contributors for their efforts in making this release possible!
+
+## Roadmap for 0.5.0
+
+The community is tracking the next release in
[#959](https://github.com/apache/iceberg-cpp/issues/959), which focuses on the
remaining Iceberg v3 feature support.
+
+## Getting Involved
+
+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).
