comphead commented on code in PR #162:
URL: https://github.com/apache/datafusion-site/pull/162#discussion_r3011399322
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content/blog/2026-03-25-datafusion-53.0.0.md:
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@@ -0,0 +1,368 @@
+---
+layout: post
+title: Apache DataFusion 53.0.0 Released
+date: 2026-03-25
+author: pmc
+categories: [release]
+---
+
+<!--
+{% comment %}
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+(the "License"); you may not use this file except in compliance with
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+
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+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
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+{% endcomment %}
+-->
+
+[TOC]
+
+We are proud to announce the release of [DataFusion 53.0.0]. This post
highlights
+some of the major improvements since [DataFusion 52.0.0]. The complete list of
+changes is available in the [changelog]. Thanks to the [114 contributors] for
+making this release possible.
+
+[DataFusion 53.0.0]: https://crates.io/crates/datafusion/53.0.0
+[DataFusion 52.0.0]:
https://datafusion.apache.org/blog/2026/01/12/datafusion-52.0.0/
+[changelog]:
https://github.com/apache/datafusion/blob/branch-53/dev/changelog/53.0.0.md
+[114 contributors]:
https://github.com/apache/datafusion/blob/branch-53/dev/changelog/53.0.0.md#credits
+
+## Performance Improvements 🚀
+
+DataFusion 53 continues the project-wide focus on performance. This release
+reduces planning overhead, skips more unnecessary I/O, and pushes more work
+into earlier and cheaper stages of execution.
+
+**TODO: Add performance chart and short discussion of the benchmark setup and
results.**
+
+**TODO: Also mention that we updated the ClickBench benchmark to use
DataFusion 52.**
+
+
+### `LIMIT`-Aware Parquet Row Group Pruning
+
+DataFusion 53 includes a new optimization that makes Parquet pruning aware of
+SQL `LIMIT`, which is described in full in [limit pruning blog post]. If
+DataFusion can prove that an entire row group matches the predicate, and those
+fully matching row groups contain enough rows to satisfy the `LIMIT`, partially
+matching row groups are skipped entirely.
+
+<figure>
+<img src="/blog/images/limit-pruning/pruning-pipeline.svg" width="80%"
alt="Pruning pipeline with limit pruning highlighted"/>
+<figcaption><b>Figure 1</b>: Limit pruning is inserted between row group and
page index pruning.</figcaption>
+</figure>
+
+Thanks to [@xudong963] for implementing this feature. Related PRs: [#18868]
+
+### Improved Filter Pushdown
+
+DataFusion 53 pushes filters down through more join types, and through
`UnionExec`,
+as well as has expanded support for pushing down [dynamic filters]. More
+pushdown means fewer rows flow into joins, repartitions, and later operators,
+which reduces CPU, memory, and I/O.
+
+For example:
+
+```sql
+SELECT *
+FROM t1
+LEFT JOIN t2 ON t1.k = t2.k
+WHERE t1.k = 1;
+```
+
+Now DataFusion can often transform the physical plan so the filter is applied
+to both sides before the join. This is especially important with [dynamic
filters].
+
+<figure>
+<img src="/blog/images/datafusion-53/join-filter-pushdown.svg" width="80%"
alt="Before and after diagram of filter pushdown around a hash join"/>
+<figcaption><b>Figure 2</b>: DataFusion 53 infers additional filters from join
conditions and pushes them down in the plan.</figcaption>
+</figure>
+
+Thanks to [@nuno-faria], [@haohuaijin], and [@jackkleeman] for
+driving this work. Related PRs: [#19918], [#20145], [#20192]
+
+### Faster Query Planning
+
+DataFusion 53 improves query planning performance, making immutable pieces of
+execution plans cheaper to clone. This helps applications that need extreme low
+latency, plan many or complex queries, and those using prepared statements or
+parameterized queries.
+
+Thanks to [@askalt] for leading this work. Related PRs: [#19792], [#19893]
+
+**TODO: Get `sql_planner` benchmarks for 52.4.0 and 53.0.0.**
+
+### Faster Functions
Review Comment:
this is nice!
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