From 4f2b9888a87ed32671d73a2029f921aa61e1f501 Mon Sep 17 00:00:00 2001
From: Jannik Lindemann <jannik.lindemann3@gmail.com>
Date: Fri, 24 Jul 2026 12:12:54 +0200
Subject: [PATCH] SystemDS 3.4.0 Release Notes

---
 _src/_data/navigation.yml                     |  8 +-
 _src/_data/project.yml                        |  2 +-
 _src/documentation.html                       |  7 +-
 .../systemds-release-notes-3.4.0.md           | 76 +++++++++++++++++++
 4 files changed, 85 insertions(+), 8 deletions(-)
 create mode 100644 _src/release-notes/systemds-release-notes-3.4.0.md

diff --git a/_src/_data/navigation.yml b/_src/_data/navigation.yml
index 4481395a..bb5b89e0 100644
--- a/_src/_data/navigation.yml
+++ b/_src/_data/navigation.yml
@@ -27,10 +27,10 @@ topnav:
   subcategories:
   - title: latest
     url: https://apache.github.io/systemds/
-  - title: 3.3.0 (stable)
-    url: https://systemds.apache.org/docs/3.3.0/
-  - title: Release Notes 3.3.0
-    url: https://systemds.apache.org/release-notes/systemds-release-notes-3.3.0
+  - title: 3.4.0 (stable)
+    url: https://systemds.apache.org/docs/3.4.0/
+  - title: Release Notes 3.4.0
+    url: https://systemds.apache.org/release-notes/systemds-release-notes-3.4.0
     
 
 - title: Community
diff --git a/_src/_data/project.yml b/_src/_data/project.yml
index 226a90d1..93482aaa 100644
--- a/_src/_data/project.yml
+++ b/_src/_data/project.yml
@@ -43,7 +43,7 @@ issues_list_archive_markmail:
 jira: SYSTEMDS
 
 release_name: systemds
-release_version: 3.3.0
+release_version: 3.4.0
 
 source_repository: https://git-wip-us.apache.org/repos/asf/systemds.git
 source_repository_mirror: https://github.com/apache/systemds
diff --git a/_src/documentation.html b/_src/documentation.html
index b4ca0a8e..5224fa2d 100644
--- a/_src/documentation.html
+++ b/_src/documentation.html
@@ -38,13 +38,14 @@ <h1>{{ site.data.project.name }} Documentation</h1>
       <p>Documentation such as programming guides, reference guides, and API docs is available for SystemDS below:</p>
       <a class="button button-primary" href="{{ site.data.project.docs }}">Latest</a>
       <p></p>
-      <a class="button button-primary" href="docs/3.3.0/index">3.3.0</a>
-      <a class="button button-primary" href="release-notes/systemds-release-notes-3.3.0">ReleaseNotes</a>
+      <a class="button button-primary" href="docs/3.4.0/index">3.4.0</a>
+      <a class="button button-primary" href="release-notes/systemds-release-notes-3.4.0">ReleaseNotes</a>
     </div>
     <div class="col col-4">
       <p>each released version of SystemML/DS:</p>
       <ul>
-        <li><a href="docs/3.1.0/index">3.2.0</a>, <a href="release-notes/systemds-release-notes-3.2.0">ReleaseNotes</a></li>
+        <li><a href="docs/3.3.0/index">3.3.0</a>, <a href="release-notes/systemds-release-notes-3.3.0">ReleaseNotes</a></li>
+        <li><a href="docs/3.2.0/index">3.2.0</a>, <a href="release-notes/systemds-release-notes-3.2.0">ReleaseNotes</a></li>
         <li><a href="docs/3.1.0/index">3.1.0</a>, <a href="release-notes/systemds-release-notes-3.1.0">ReleaseNotes</a></li>
         <li><a href="docs/3.0.0/index">3.0.0</a>, <a href="release-notes/systemds-release-notes-3.0.0">ReleaseNotes</a></li>
         <li><a href="docs/2.2.2/index">2.2.2</a>, <a href="release-notes/systemds-release-notes-2.2.2">ReleaseNotes</a></li>
diff --git a/_src/release-notes/systemds-release-notes-3.4.0.md b/_src/release-notes/systemds-release-notes-3.4.0.md
new file mode 100644
index 00000000..c7e5bdfa
--- /dev/null
+++ b/_src/release-notes/systemds-release-notes-3.4.0.md
@@ -0,0 +1,76 @@
+---
+layout: page
+title: SystemDS 3.4.0 Release Notes
+description: Project Release Notes
+group: nav-right
+---
+<!--
+{% 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 %}
+-->
+
+<section class="full-stripe full-stripe--subpage-header clear-header">
+  <div class="ml-container ml-container--horizontally-center">
+    <div class="col col-12 content-group content-group--center-content content-group--center-align">
+      <h1>{{ site.data.project.name }} 3.4.0 Release Notes</h1>
+    </div>
+  </div>
+</section>
+
+<section class="full-stripe full-stripe--alternate">
+  <div class="ml-container">
+    <div class="col col-12 content-group content-group--medium-bottom-margin" markdown="1">
+
+## Release notes for SystemDS 3.4.0
+
+SystemDS 3.4.0 is a minor release with Java 17 support, native Delta Lake I/O, Vector API execution paths, and runtime improvements.
+
+### Runtime Requirements
+
+- Java 17 is required.
+- JVMs that launch SystemDS must enable the Vector API with `--add-modules=jdk.incubator.vector`.
+- Custom Java launchers and `spark-submit` deployments must pass the required Java 17 module and package-open options to every JVM.
+
+### New Features
+
+- Native Delta Lake readers and writers for matrices and frames, built on Delta Kernel with Parquet data-file support.
+- Vectorized execution and optimized Einstein summation (`einsum`).
+- Expanded Scuro multimodal and time-series processing.
+- New built-ins and algorithms, including:
+  - LARS, missing-data mechanism detection, Hidden Markov Models, and HDBSCAN.
+  - Clustered classification, BERT layers, GloVe, and counter-based random generation.
+
+### Runtime and Performance Improvements
+
+- Improved compressed execution, matrix multiplication, transforms, and workload-aware intermediate compression.
+- Faster frame conversion and Python/JVM data transfer.
+- Improved Spark context management, compiler rewrites, and GPU compatibility.
+
+### Federated Runtime
+
+- Improved worker lifecycle handling, planning, and workload analysis.
+- Fixed threading and synchronization issues.
+
+### Experimental Out-of-Core Execution
+
+SystemDS 3.4.0 introduces an experimental out-of-core framework for workloads that exceed the JVM heap. It supports selected matrix operations, I/O, streams, caches, and iterative algorithms, but is incomplete and not recommended for production use.
+
+### Bug Fixes and Other Improvements
+
+- Fixed issues in `mdedup`, `ampute`, Isolation Forest, `unique`, trace compatibility, compiler rewrites, and federated execution.
+- Updated Java 17 build, Docker, CI, and release infrastructure; added Databricks deployment material and documentation.
+- Updated key dependencies: Spark 3.5.7, Hadoop 3.3.6 client libraries, Scala 2.12.18, Delta Kernel 3.3.2, Parquet 1.13.1, and JCuda 12.6.0.