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| Highlights # Flink 2.1 Support # The Flink Kubernetes Operator and Autoscaler 1."> |
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| <h1> |
| <a href="/2025/09/29/apache-flink-kubernetes-operator-1.13.0-release-announcement/">Apache Flink Kubernetes Operator 1.13.0 Release Announcement</a> |
| </h1> |
| |
| |
| |
| September 29, 2025 - |
| |
| |
| |
| Ferenc Csaky |
| |
| |
| |
| |
| <p><p>The Apache Flink community is excited to announce the release of Flink Kubernetes Operator 1.13.0! |
| The version brings a number of important fixes and improvements to both core and autoscaler modules.</p> |
| <p>We encourage you to <a href="https://flink.apache.org/downloads/#apache-flink-kubernetes-operator">download the release</a> and share your experience with the |
| community through the Flink <a href="https://flink.apache.org/community.html#mailing-lists">mailing lists</a> or |
| <a href="https://issues.apache.org/jira/browse/flink">JIRA</a>! We’re looking forward to your feedback!</p> |
| <h2 id="highlights"> |
| Highlights |
| <a class="anchor" href="#highlights">#</a> |
| </h2> |
| <h3 id="flink-21-support"> |
| Flink 2.1 Support |
| <a class="anchor" href="#flink-21-support">#</a> |
| </h3> |
| <p>The Flink Kubernetes Operator and Autoscaler 1.13.0 brings support for Flink 2.1 version.</p> |
| <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-yaml" data-lang="yaml"><span class="line"><span class="cl"><span class="nt">apiVersion</span><span class="p">:</span><span class="w"> </span><span class="l">flink.apache.org/v1beta1</span><span class="w"> |
| </span></span></span><span class="line"><span class="cl"><span class="w"></span><span class="nt">kind</span><span class="p">:</span><span class="w"> </span><span class="l">FlinkDeployment</span><span class="w"> |
| </span></span></span><span class="line"><span class="cl"><span class="w"></span><span class="nt">metadata</span><span class="p">:</span><span class="w"> |
| </span></span></span><span class="line"><span class="cl"><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="l">basic-example</span><span class="w"> |
| </span></span></span><span class="line"><span class="cl"><span class="w"></span><span class="nt">spec</span><span class="p">:</span><span class="w"> |
| </span></span></span><span class="line"><span class="cl"><span class="w"> </span><span class="nt">image</span><span class="p">:</span><span class="w"> </span><span class="l">flink:2.1</span><span class="w"> |
| </span></span></span><span class="line"><span class="cl"><span class="w"> </span><span class="nt">flinkVersion</span><span class="p">:</span><span class="w"> </span><span class="l">v2_1</span><span class="w"> |
| </span></span></span><span class="line"><span class="cl"><span class="w"> </span><span class="c"># ...</span><span class="w"> |
| </span></span></span></code></pre></div><h3 id="structured-yaml-configuration-support"> |
| Structured YAML Configuration Support |
| <a class="anchor" href="#structured-yaml-configuration-support">#</a> |
| </h3> |
| <p>Starting with Flink Kubernetes Operator 1.13.0, it is possible to define the <code>flinkConfiguration</code> in a structured YAML format as well. |
| This feature operates independently of Flink’s core configuration handling and is therefore not affected by the defined Flink version.</p> |
| <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-yaml" data-lang="yaml"><span class="line"><span class="cl"><span class="nt">apiVersion</span><span class="p">:</span><span class="w"> </span><span class="l">flink.apache.org/v1beta1</span><span class="w"> |
| </span></span></span><span class="line"><span class="cl"><span class="w"></span><span class="nt">kind</span><span class="p">:</span><span class="w"> </span><span class="l">FlinkDeployment</span><span class="w"> |
| </span></span></span><span class="line"><span class="cl"><span class="w"></span><span class="nt">metadata</span><span class="p">:</span><span class="w"> |
| </span></span></span><span class="line"><span class="cl"><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="l">basic-example</span><span class="w"> |
| </span></span></span><span class="line"><span class="cl"><span class="w"></span><span class="nt">spec</span><span class="p">:</span><span class="w"> |
| </span></span></span><span class="line"><span class="cl"><span class="w"> </span><span class="nt">image</span><span class="p">:</span><span class="w"> </span><span class="l">flink:2.1</span><span class="w"> |
| </span></span></span><span class="line"><span class="cl"><span class="w"> </span><span class="nt">flinkVersion</span><span class="p">:</span><span class="w"> </span><span class="l">v2_1</span><span class="w"> |
| </span></span></span><span class="line"><span class="cl"><span class="w"> </span><span class="nt">flinkConfiguration</span><span class="p">:</span><span class="w"> |
| </span></span></span><span class="line"><span class="cl"><span class="w"> </span><span class="nt">taskmanager</span><span class="p">:</span><span class="w"> |
| </span></span></span><span class="line"><span class="cl"><span class="w"> </span><span class="nt">numberOfTaskSlots</span><span class="p">:</span><span class="w"> </span><span class="s2">"2"</span><span class="w"> |
| </span></span></span><span class="line"><span class="cl"><span class="w"> </span><span class="nt">state</span><span class="p">:</span><span class="w"> |
| </span></span></span><span class="line"><span class="cl"><span class="w"> </span><span class="nt">savepoints</span><span class="p">:</span><span class="w"> |
| </span></span></span><span class="line"><span class="cl"><span class="w"> </span><span class="nt">dir</span><span class="p">:</span><span class="w"> </span><span class="l">file:///flink-data/savepoints</span><span class="w"> |
| </span></span></span><span class="line"><span class="cl"><span class="w"> </span><span class="nt">checkpoints</span><span class="p">:</span><span class="w"> |
| </span></span></span><span class="line"><span class="cl"><span class="w"> </span><span class="nt">dir</span><span class="p">:</span><span class="w"> </span><span class="l">file:///flink-data/checkpoints</span><span class="w"> |
| </span></span></span><span class="line"><span class="cl"><span class="w"> </span><span class="nt">high-availability</span><span class="p">:</span><span class="w"> |
| </span></span></span><span class="line"><span class="cl"><span class="w"> </span><span class="nt">type</span><span class="p">:</span><span class="w"> </span><span class="l">kubernetes</span><span class="w"> |
| </span></span></span><span class="line"><span class="cl"><span class="w"> </span><span class="nt">storageDir</span><span class="p">:</span><span class="w"> </span><span class="l">file:///flink-data/ha</span><span class="w"> |
| </span></span></span><span class="line"><span class="cl"><span class="w"> </span><span class="c"># ...</span><span class="w"> |
| </span></span></span></code></pre></div><h3 id="bug-fixes-and-stability-enhancements"> |
| Bug Fixes and Stability Enhancements |
| <a class="anchor" href="#bug-fixes-and-stability-enhancements">#</a> |
| </h3> |
| <ul> |
| <li><strong>Fixed Operator Upgrade Failures</strong>: Fixes a bug where upgrading to operator v1.12 from a previous version may cause job failures.</li> |
| <li><strong>Improved REST Exception Fetching</strong>: For session jobs, this fixes intermittent “Failed to fetch job exceptions from REST API” errors.</li> |
| <li><strong>Session Deletion Enhancement</strong>: With a new configurable option, it is possible to delete sessions even if there are running jobs.</li> |
| <li><strong>FlinkStateSnapshot CRD Compatibility Check</strong>: Now FlinkStateSnapshots also covered with a compatibility check, just like FlinkDeployment and FlinkSessionJob CRDs.</li> |
| </ul> |
| <h2 id="release-notes"> |
| Release Notes |
| <a class="anchor" href="#release-notes">#</a> |
| </h2> |
| <p>The full release notes can be found <a href="https://issues.apache.org/jira/secure/ReleaseNote.jspa?projectId=12315522&version=12355967">here</a>.</p> |
| <h2 id="release-resources"> |
| Release Resources |
| <a class="anchor" href="#release-resources">#</a> |
| </h2> |
| <p>The source artifacts and helm chart are available on the Downloads page of the Flink website. |
| You can easily try out the new features shipped in the official 1.13.0 release by adding the Helm chart to your own local registry:</p> |
| <pre tabindex="0"><code>$ helm repo add flink-kubernetes-operator-1.13.0 https://archive.apache.org/dist/flink/flink-kubernetes-operator-1.13.0/ |
| $ helm install flink-kubernetes-operator flink-kubernetes-operator-1.13.0/flink-kubernetes-operator --set webhook.create=false |
| </code></pre><p>You can also find official Kubernetes Operator Docker images of the new version on <a href="https://hub.docker.com/r/apache/flink-kubernetes-operator">Dockerhub</a>.</p> |
| <p>For more details, check the <a href="https://nightlies.apache.org/flink/flink-kubernetes-operator-docs-release-1.13/">updated documentation</a> and the release notes. |
| We encourage you to download the release and share your feedback with the community through the Flink mailing lists or JIRA.</p> |
| <h2 id="list-of-contributors"> |
| List of Contributors |
| <a class="anchor" href="#list-of-contributors">#</a> |
| </h2> |
| <p>Andrei Kaigorodov, Attila Mészáros, David Kornel, Ferenc Csaky, Gabor Somogyi, GuoYu, Gyula Fora, Kumar Mallikarjuna, Mate Czagany, Michał Fijołek, nishita-09, Santwana Verma, schongloo, Yi Chen</p> |
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