Site: Add blog post for iceberg-rust 0.10.0

site/docs/blog/posts/2026-07-14-iceberg-rust-0.10.0-release.md

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+---
+date: 2026-07-14
+title: Apache Iceberg Rust 0.10.0 Release
+slug: apache-iceberg-rust-0.10.0-release
+authors:
+  - iceberg-pmc
+categories:
+  - release
+---
+
+<!--
+ - Licensed to the Apache Software Foundation (ASF) under one or more
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+ -   http://www.apache.org/licenses/LICENSE-2.0
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+ - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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+ - limitations under the License.
+ -->
+
+The Apache Iceberg community is pleased to announce version 0.10.0 of [iceberg-rust](https://github.com/apache/iceberg-rust).
+
+This release covers development work from early March through early July 2026 and is the result of merging **252 PRs** from **40 contributors**. See the [changelog] for the complete list of changes.
+
+[changelog]: https://github.com/apache/iceberg-rust/blob/main/CHANGELOG.md#v0100---2026-06-29
+
+`iceberg-rust` is a native Rust implementation of the Apache Iceberg specification, providing high-performance libraries for reading, writing, and managing Iceberg tables in Rust applications and through Python bindings (`pyiceberg-core`).
+
+<!-- more -->
+
+## Release Highlights
+
+There have been plenty of contributions across the `iceberg-rust` library; here's a highlight of a few.
+
+### Schema Evolution
+
+This release adds the [`update_schema` action](https://github.com/apache/iceberg-rust/pull/2120), enabling column addition and removal.
+
+### Snapshot Expiration
+
+A new `ExpireSnapshotsAction` ([#2591](https://github.com/apache/iceberg-rust/pull/2591), [#2664](https://github.com/apache/iceberg-rust/pull/2664), [#2667](https://github.com/apache/iceberg-rust/pull/2667)) provides a high-level API for expiring old snapshots, respecting `history.expire.*` table properties and cleaning up associated statistics file metadata.
+
+### Configurable Tokio runtime
+
+The [`Runtime` trait](https://github.com/apache/iceberg-rust/pull/2308) can now be provided when initializing catalogs.
+This allows for injecting a customized Tokio runtime into the session.
+For example, it is now possible to configure the thread stack size or maximum number of threads programatically.
+
+### Writer Improvements
+
+- **Content-defined chunking** ([#2375](https://github.com/apache/iceberg-rust/pull/2375), [#2561](https://github.com/apache/iceberg-rust/pull/2561)): content-defined chunking table properties are now respected for optimizing Parquet file boundaries
+- **[Purge table support](https://github.com/apache/iceberg-rust/pull/2232)**: Catalogs now offer a `purge_table` method, deleting both metadata and data files
+
+### Enhanced DataFusion Integration
+
+- **[EXPLAIN shows pushed-down limits](https://github.com/apache/iceberg-rust/pull/2360)**: `IcebergTableScan` now displays limit pushdown in EXPLAIN output for query debugging
+- **[IsNaN predicate pushdown](https://github.com/apache/iceberg-rust/pull/2592)**: NaN-preserving numeric expressions are now pushed into scans
+
+### REST Catalog Endpoint Negotiation
+
+The REST catalog client now [parses server-advertised endpoints](https://github.com/apache/iceberg-rust/pull/2692) from the `GET /v1/config` response. This enables clients to discover which optional operations a server supports before attempting them.
+
+### Reader and Scan Improvements
+
+- **[Scan I/O metrics](https://github.com/apache/iceberg-rust/pull/2349)**: `ArrowReader` now exposes bytes read during scans
+- **[FixedBinary(N) support](https://github.com/apache/iceberg-rust/pull/2348)**: Added support for fixed-length binary types
+- **[Snappy codec for Avro](https://github.com/apache/iceberg-rust/pull/2573)**: Avro files compressed with Snappy can now be read
+
+### Table Encryption (Foundational)
+
+Significant groundwork has been laid toward Iceberg's table encryption specification. Writes to encrypted tables are [explicitly blocked](https://github.com/apache/iceberg-rust/pull/2626) until the full write path is complete. End-to-end read and write support for encrypted tables is expected in a future release. See the [table encryption RFC](https://github.com/apache/iceberg-rust/pull/2183) for the full design.
+
+### Storage Improvements
+
+#### New Storage Backend - HuggingFace Hub
+
+The [HuggingFace Hub storage backend](https://github.com/apache/iceberg-rust/pull/2375) was introduced, enabling direct access to Iceberg tables hosted on HuggingFace datasets.
+
+#### Other improvements
+
+- **[`delete_stream` on Storage trait](https://github.com/apache/iceberg-rust/pull/2216)**: Batch delete operations for efficient cleanup
+- **[OpenDAL resolving storage](https://github.com/apache/iceberg-rust/pull/2231)**: Automatically resolves the appropriate storage backend based on file path scheme
+- **[Timeout layer for OpenDAL](https://github.com/apache/iceberg-rust/pull/2455)**: Added `TimeoutLayer` inside `RetryLayer` to prevent indefinite hangs
+- **[S3 virtual-host-style addressing](https://github.com/apache/iceberg-rust/pull/2330)**: Default to virtual-host-style S3 addressing for broader compatibility
+
+## Bug Fixes
+
+Notable correctness fixes or other validation improvements in this release:
+
+- **[INT96 timestamp values](https://github.com/apache/iceberg-rust/pull/2301)**: Fixed incorrect Parquet INT96 timestamp interpretation
+- **[Nested type column indices](https://github.com/apache/iceberg-rust/pull/2307)**: Fixed `build_fallback_field_id_map` producing incorrect indices for schemas with nested types
+- **[Delete-only manifests in FastAppend](https://github.com/apache/iceberg-rust/pull/2545)**: Preserved delete-only manifests that were incorrectly dropped
+- **[DeleteFileIndex lost wakeup](https://github.com/apache/iceberg-rust/pull/2696)**: Fixed a hang caused by a lost-wakeup race in `get_deletes_for_data_file`
+- **[Row group byte range filtering](https://github.com/apache/iceberg-rust/pull/2615)**: Fixed row duplication for sub-row-group file splits
+- **[Cross-engine decimal compatibility](https://github.com/apache/iceberg-rust/pull/2538)**: Added space in decimal type serialization for compatibility with other engines
+- **[NaN pushdown correctness](https://github.com/apache/iceberg-rust/pull/2351)**: Fixed NaN pushdown to correctly handle NaN values
+- **[Puffin magic number validation](https://github.com/apache/iceberg-rust/pull/2416)**: Added missing validation for magic number at the start of a Puffin file
+- **[Glue catalog filtering](https://github.com/apache/iceberg-rust/pull/2570)**: Only list Iceberg tables, not all Glue tables
+- **[Empty insert handling](https://github.com/apache/iceberg-rust/pull/2712)**: INSERT operations that produce no rows now correctly return a single row with count 0
+- **[Name-mapped field IDs](https://github.com/apache/iceberg-rust/pull/2612)**: Projection and predicate pushdown now correctly use name-mapped field IDs for Parquet files without embedded field IDs
+- **[Snapshot summary total fields](https://github.com/apache/iceberg-rust/pull/2589)**: Total values are now omitted if the previous summary had unparsable or no previous total.
+- **[Equality delete null handling](https://github.com/apache/iceberg-rust/pull/2781)**: Rows with a null value in an equality-delete column were incorrectly deleted
+- **[Negative positional delete positions](https://github.com/apache/iceberg-rust/pull/2631)**: Negative positions now error during evaluation instead of wrapping to large u64 offsets
+- **[Required field absent without default](https://github.com/apache/iceberg-rust/pull/2797)**: Properly errors instead of silently producing null for required fields absent from a data file
+- **[Non-append insert rejection](https://github.com/apache/iceberg-rust/pull/2714)**: Overwrite/replace inserts in DataFusion are now rejected instead of silently succeeding with append semantics
+- **[Float/double datum conversion](https://github.com/apache/iceberg-rust/pull/2783)**: Predicates with mismatched float/double literal types no longer fail
+- **[Snapshot summary metrics](https://github.com/apache/iceberg-rust/pull/2726)**: User-supplied properties can no longer override computed summary metrics
+
+## Breaking Changes
+
+Here's a few notable breaking changes.
+Given `iceberg-rust` has not yet reached version `1.x`, breaking changes are adopted for a better API long-term.
+
+- **[Purge table](https://github.com/apache/iceberg-rust/pull/2232)**: Added `purge_table` to the `Catalog` trait; some catalog implementations moved their data-deletion logic from `drop_table` to `purge_table`
+- **[Compression codec enum](https://github.com/apache/iceberg-rust/pull/2288)**: Codec enum variant changes introducing Snappy, and including compression levels in Zstd and Gzip.
+- **[Custom Runtime in Catalog](https://github.com/apache/iceberg-rust/pull/2308)**: Added `with_runtime` to the `CatalogBuilder` trait
+- **[DefaultLocationGenerator](https://github.com/apache/iceberg-rust/pull/2604)**: `new()` now borrows `TableMetadata` instead of taking ownership
+- **[MSRV](https://github.com/apache/iceberg-rust/pull/2652)**: Bumped to Rust 1.94
+
+## Dependency Updates
+
+This release included a number of dependency updates, including upgrading to Apache DataFusion 53 and Apache Arrow 58.
+For a full list of dependency versions, the best resources to review are the Cargo manifests.
+
+## Infrastructure Improvements
+
+- **Public API stability**: [cargo-public-api checks](https://github.com/apache/iceberg-rust/pull/2525) on every PR to catch unintentional API breakage
+- **Trusted publishing**: [Migrated to trusted publishing](https://github.com/apache/iceberg-rust/pull/2593) for crates.io releases
+- **Standalone compilation**: [CI verifies each crate compiles independently](https://github.com/apache/iceberg-rust/pull/2389)
+- **Security**: Pinned all third-party actions to Apache-approved SHAs; ASF allowlist check on every PR
+- **Performance**: [Disabled debuginfo and incremental compilation](https://github.com/apache/iceberg-rust/pull/2672) in CI; [Rust caches saved only from main](https://github.com/apache/iceberg-rust/pull/2669)
+
+## What's Next
+
+Work is already underway on several features for upcoming releases:
+
+- **Table encryption**: With the foundational encryption stack landed, the community is working toward end-to-end encrypted reads and writes
+- **Transaction layer improvement**: We are working on adding the snapshot validation mechanism to detect write conflicts, laying the groundwork for future support of RewriteDataFiles, RowDelta, and Overwrite commit operations.
+
+## Getting Involved
+
+The `iceberg-rust` project welcomes contributions. We use GitHub [issues](https://github.com/apache/iceberg-rust/issues) for tracking work and the [Apache Iceberg Community Slack](https://iceberg.apache.org/community/#slack) for discussions.
+
+The easiest way to get started is to:
+
+1. Try `iceberg-rust` with your workloads and report any issues you encounter
+2. Review the [contributor guide](https://github.com/apache/iceberg-rust/blob/main/CONTRIBUTING.md)
+3. Look for [good first issues](https://github.com/apache/iceberg-rust/contribute)
+
+Code review is also a very welcome contribution - please provide feedback on pull requests where you feel comfortable to do so!
+
+For more information, visit the [iceberg-rust repository](https://github.com/apache/iceberg-rust).