kou commented on code in PR #714:
URL: https://github.com/apache/arrow-site/pull/714#discussion_r2475593746
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_posts/2025-09-24-22.0.0-release.md:
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@@ -0,0 +1,182 @@
+---
+layout: post
+title: "Apache Arrow 22.0.0 Release"
+date: "2025-09-24 00:00:00"
+author: pmc
+categories: [release]
+---
+<!--
+{% comment %}
+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.
+{% endcomment %}
+-->
+
+The Apache Arrow team is pleased to announce the 22.0.0 release. This release
+covers over 3 months of development work and includes [**213 resolved
+issues**][1] on [**255 distinct commits**][2] from [**60 distinct
+contributors**][2]. See the [Install Page](https://arrow.apache.org/install/)
to
+learn how to get the libraries for your platform.
+
+The release notes below are not exhaustive and only expose selected highlights
+of the release. Many other bugfixes and improvements have been made: we refer
+you to the [complete changelog][3].
+
+## Community
+
+Since the 21.0.0 release, Kyle Barron has been invited to be committer.
+
+Matthijs Brobbel, Adam Reeve and Rossi Sun have been joined the
+Project Management Committee (PMC).
+
+Thanks for your contributions and participation in the project!
+
+The first Apache Arrow Summit was held on October 2nd 2025 in Paris, France
+as part of [PyData Paris](https://pydata.org/paris2025).
+Program details and agenda can be found here:
https://www.meetup.com/pydata-paris/events/310646396/
+
+There were around 35 attendees, of which ~20 were existing core developers or
PMC members.
+The Summit was overwhelmingly described as a success, with a friendly
atmosphere between all participants.
+Unfortunately, no Audio / Video recording system was available for this event.
+
+## Arrow Flight RPC Notes
+
+Support for dictionary replacement and dictionary encoding has been added to
the DoGet and DoExchange methods.
([GH-45056](https://github.com/apache/arrow/issues/45056),
[GH-45055](https://github.com/apache/arrow/issues/45055) and
[GH-26727](https://github.com/apache/arrow/issues/26727)).
+
+As part of supporting dictionary replacement we have also exposed the
`ipc::ReadStats` on the `FlightStreamReader` in order to facilitate debugging.
([GH-47422](https://github.com/apache/arrow/issues/47422))
+
+## C++ Notes
+
+### Compute
+
+Timezone aware kernels can now handle timezone offset strings.
([GH-30036](https://github.com/apache/arrow/issues/30036))
+
+Better decimal support has been added introducing a structure
`MatchConstraint` for applying extra (and optional) matching constraint for
kernel signature matching.
([GH-47287](https://github.com/apache/arrow/issues/47287),
[GH-41336](https://github.com/apache/arrow/issues/41336))
+
+The scatter function has been moved to Arrow core from Arrow Compute.
([GH-47375](https://github.com/apache/arrow/issues/47375))
+
+### Filesystems
+
+The Request ID has been added when the AWS client raises an error.
([GH-47349](https://github.com/apache/arrow/issues/47349))
+
+### Format
+
+Several improvements around Half Float (Float16) support.
([GH-46860](https://github.com/apache/arrow/issues/46860),
[GH-46739](https://github.com/apache/arrow/issues/46739))
+
+### Parquet
+
+Better Fuzzing support for Parquet and several related fixes.
([GH-47803](https://github.com/apache/arrow/issues/47803),
[GH-47740](https://github.com/apache/arrow/issues/47740),
[GH-47655](https://github.com/apache/arrow/issues/47655),
[GH-47597](https://github.com/apache/arrow/issues/47597),
[GH-47184](https://github.com/apache/arrow/issues/47184))
+
+Rework around the RLE decoder in order to extract a RLE parser to drive
further optimisations.
([GH-47112](https://github.com/apache/arrow/issues/47112))
+
+Dynamic dispatch support has been added to Byte Stream Split.
([GH-46962](https://github.com/apache/arrow/issues/46962))
+
+Now some statistics, i.e. null count. will not be discarded when the sort
order of the column is unknown.
([GH-47449](https://github.com/apache/arrow/issues/47449))
+
+`is_min_value_exact` and `is_max_value_exact` now are exposed in Parquet
Statistics if present when reading.
([GH-46905](https://github.com/apache/arrow/issues/46905))
+
+We now reserve values correctly when reading `BYTE_ARRAY` and `FLBA`.
([GH-47012](https://github.com/apache/arrow/issues/47012))
+
+#### Encryption
+
+String based Parquet encrption methods have been deprecated.
([GH-47338](https://github.com/apache/arrow/issues/47338))
+
+Memory usage required by decryption buffers when reading encrypted Parquet has
been reduced. ([GH-46971](https://github.com/apache/arrow/issues/46971))
+
+#### Type support
+
+Improvements on the Parquet Variant type support.
([GH-47241](https://github.com/apache/arrow/issues/47241),
[GH-47838](https://github.com/apache/arrow/issues/47838))
+
+Better support for Decimal32 and Decimal64.
([GH-44345](https://github.com/apache/arrow/issues/44345))
+
+### Gandiva
+
+Support for LLVM 21.1.0 has been added.
([GH-47469](https://github.com/apache/arrow/issues/47469))
+
+### Miscellaneous C++ changes
+
+Add support for further Arrow Statistics.
([GH-47102](https://github.com/apache/arrow/issues/47102),
[GH-47101](https://github.com/apache/arrow/issues/47101))
+
+Support for shared memory comparison in `arrow::RecordBatch` has been added.
([GH-47149](https://github.com/apache/arrow/pull/47149))
+
+`arrow::Table::Equals` now allows an optional `arrow::EqualOptions` argument.
([GH-46937](https://github.com/apache/arrow/issues/46937))
+
+Skyhook integration has been removed from the main repository and has been
moved to its own repository.
([GH-47225](https://github.com/apache/arrow/issues/47225))
+
+## Linux Packaging Notes
+
+Support for Debian forky has been added.
([GH-47312](https://github.com/apache/arrow/issues/47312))
+
+## MATLAB Notes
+
+- `NumNulls` property was added to `arrow.array.Array` and
`arrow.arrray.ChunkedArray`.
([GH-47263](https://github.com/apache/arrow/issues/47263),
[GH-38422](https://github.com/apache/arrow/issues/38422))
+
+## Python Notes
+
+Compatibility notes:
+- Support for Python 3.9 has been dropped
([GH-47443](https://github.com/apache/arrow/issues/47443)) and support for
Python 3.14, regular and free-threaded has been added,
([GH-47438](https://github.com/apache/arrow/issues/47438)).
+- Cython 3.1 is now required build-time dependency
([GH-47370](https://github.com/apache/arrow/issues/47370)).
+- `project.optional-dependencies` has been replaced with `dependency-groups`
([GH-47137](https://github.com/apache/arrow/issues/47137)).
+
+New features:
+- CSV writer option `quoting_header` is now exposed
([GH-47575](https://github.com/apache/arrow/issues/47575)).
+
+Other improvements:
+- Support for pandas `DataFrame.attrs` during conversion between a dataframe
and a Parquet file has been added
([GH-45382](https://github.com/apache/arrow/issues/45382)).
+- A utility function to create Arrow table instead of pandas dataframe has
been added ([GH-47172](https://github.com/apache/arrow/issues/47172)).
+- IPC and Flight options now have a nice repr/str methods
([GH-47358](https://github.com/apache/arrow/issues/47358)).
+- Access to Request ID in AWS client error is now available from Python
([GH-47349](https://github.com/apache/arrow/issues/47349)).
+- Public Type Enums are added
([GH-47123](https://github.com/apache/arrow/issues/47123)).
+- Python Development documentation section has been restructured in order to
make it easier for contributors to build and develop PyArrow
([GH-20125](https://github.com/apache/arrow/issues/20125).
+
+Relevant bug fixes:
+- Schema is now hashable when metadata is set
([GH-47602](https://github.com/apache/arrow/issues/47602)).
+- `MapScalar.as_py(maps_as_pydicts="strict")` option now works for nested maps
([GH-47380](https://github.com/apache/arrow/issues/47380)).
+- `FileFragment.open()` no longer segfaults on file-like objects
([GH-47301](https://github.com/apache/arrow/issues/47301)).
+- `pa.compute.fill_null` regression on Windows due to a compiler bug has been
fixed ([GH-47234](https://github.com/apache/arrow/issues/47234)).
+- Integer dictionary bitwidth preservation no longer breaks multi-file read
behaviour as `DatasetFactory.inspect` method now accepts `promote_options` and
`fragments` parameters
([GH-46629](https://github.com/apache/arrow/issues/46629)).
+- `FileSystem.from_uri` is reverted to be a staticmethod again
([GH-47179](https://github.com/apache/arrow/issues/47179)).
+
+
+## Java, JavaScript, Go, .NET and Rust Notes
Review Comment:
Sorry for missing this. Could you add Swift here?
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