etseidl commented on code in PR #711:
URL: https://github.com/apache/arrow-site/pull/711#discussion_r2437964960
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_posts/2025-10-30-rust-parquet-metadata.md:
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@@ -0,0 +1,403 @@
+---
+layout: post
+title: "3x-8x Faster Apache Parquet Footer Metadata Using a Custom Thrift
Parser in Rust"
+date: "2025-10-08 00:00:00"
+author: "Andrew Lamb (InfluxData)"
+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 %}
+-->
+
+*Editor’s Note: While [Apache Arrow] and [Apache Parquet] are separate
+projects, this post is part of the Arrow site because the Arrow [arrow-rs]
+repository hosts the development of the [parquet] Rust crate, a widely used and
+high-performance implementation of the Parquet format.*
+
+## Summary
+
+Version `57.0.0` of the [parquet] Rust crate decodes metadata roughly three
times as
+fast as previous versions thanks to a new custom [Apache Thrift] parser. The
new
+parser is 3× faster in all cases and enables further performance improvements
not
+possible with generated parsers, such as skipping unnecessary fields and
selective parsing.
+
+<!-- AAL: TODO: update the benchmark and charts with results from 57.0.0 -->
+
+<!-- Image source:
https://docs.google.com/presentation/d/1WjX4t7YVj2kY14SqCpenGqNl_swjdHvPg86UeBT3IcY
-->
+<div style="display: flex; gap: 16px; justify-content: center; align-items:
flex-start;">
+ <img src="{{ site.baseurl }}/img/rust-parquet-metadata/results.png"
width="100%" class="img-responsive" alt="" aria-hidden="true">
+</div>
+
+*Figure 1:* Performance comparison of [Apache Parquet] metadata parsing using
a generated
+Thrift parser (versions `56.2.0` and earlier) and the new
+[custom Thrift decoder] in [arrow-rs] version [57.0.0]. No
+changes are needed to the Parquet format itself.
+See the [benchmark page] for more details.
+
+[parquet]: https://crates.io/crates/parquet
+[Apache Arrow]: https://arrow.apache.org/
+[Apache Parquet]: https://parquet.apache.org/
+[custom Thrift decoder]: https://github.com/apache/arrow-rs/issues/5854
+[arrow-rs]: https://github.com/apache/arrow-rs
+[57.0.0]: https://github.com/apache/arrow-rs/issues/7835
+
+[benchmark page]: https://github.com/alamb/parquet_footer_parsing
+
+<!-- Image source:
https://docs.google.com/presentation/d/1WjX4t7YVj2kY14SqCpenGqNl_swjdHvPg86UeBT3IcY
-->
+<div style="display: flex; gap: 16px; justify-content: center; align-items:
flex-start;">
+ <img src="{{ site.baseurl }}/img/rust-parquet-metadata/scaling.png"
width="100%" class="img-responsive" alt="Scaling behavior of custom Thrift
parser" aria-hidden="true">
+</div>
+
+*Figure 2:* Speedup of the [custom Thrift decoder] for string and
floating-point data types,
+for `100`, `1000`, and `100,000` columns. The new parser is faster in all
cases,
Review Comment:
```suggestion
for `100`, `1000`, `10,000`, and `100,000` columns. The new parser is faster
in all cases,
```
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