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This release includes 47 bug fixes, vulnerability fixes, and minor improvements for Flink 1.18. Below you will find a list of all bugfixes and improvements (excluding improvements to the build infrastructure and build stability). For a complete list of all changes see: JIRA.
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<meta property="og:description" content="The Apache Flink Community is pleased to announce the first bug fix release of the Flink 1.18 series.
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We highly recommend all users upgrade to Flink 1.18.1." />
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<h1>
<a href="/2024/01/19/apache-flink-1.18.1-release-announcement/">Apache Flink 1.18.1 Release Announcement</a>
</h1>
January 19, 2024 -
Jing Ge
<a href="https://twitter.com/jingengineer">(@jingengineer)</a>
<p><p>The Apache Flink Community is pleased to announce the first bug fix release of the Flink 1.18 series.</p>
<p>This release includes 47 bug fixes, vulnerability fixes, and minor improvements for Flink 1.18.
Below you will find a list of all bugfixes and improvements (excluding improvements to the build infrastructure and build stability). For a complete list of all changes see:
<a href="https://issues.apache.org/jira/secure/ReleaseNote.jspa?projectId=12315522&amp;version=12353640">JIRA</a>.</p>
<p>We highly recommend all users upgrade to Flink 1.18.1.</p>
<p><strong>Note: Users that have <a href="https://nightlies.apache.org/flink/flink-docs-release-1.18/docs/ops/state/large_state_tuning/#compression">state compression</a>
should not migrate to 1.18.1 (nor 1.18.0) due to a critical bug that could lead to data loss. Please refer to <a href="https://issues.apache.org/jira/browse/FLINK-34063">FLINK-34063</a> for more information.</strong></p>
<h1 id="release-artifacts">
Release Artifacts
<a class="anchor" href="#release-artifacts">#</a>
</h1>
<h2 id="maven-dependencies">
Maven Dependencies
<a class="anchor" href="#maven-dependencies">#</a>
</h2>
<div class="highlight"><pre tabindex="0" class="chroma"><code class="language-xml" data-lang="xml"><span class="line"><span class="cl"><span class="nt">&lt;dependency&gt;</span>
</span></span><span class="line"><span class="cl"> <span class="nt">&lt;groupId&gt;</span>org.apache.flink<span class="nt">&lt;/groupId&gt;</span>
</span></span><span class="line"><span class="cl"> <span class="nt">&lt;artifactId&gt;</span>flink-java<span class="nt">&lt;/artifactId&gt;</span>
</span></span><span class="line"><span class="cl"> <span class="nt">&lt;version&gt;</span>1.18.1<span class="nt">&lt;/version&gt;</span>
</span></span><span class="line"><span class="cl"><span class="nt">&lt;/dependency&gt;</span>
</span></span><span class="line"><span class="cl"><span class="nt">&lt;dependency&gt;</span>
</span></span><span class="line"><span class="cl"> <span class="nt">&lt;groupId&gt;</span>org.apache.flink<span class="nt">&lt;/groupId&gt;</span>
</span></span><span class="line"><span class="cl"> <span class="nt">&lt;artifactId&gt;</span>flink-streaming-java<span class="nt">&lt;/artifactId&gt;</span>
</span></span><span class="line"><span class="cl"> <span class="nt">&lt;version&gt;</span>1.18.1<span class="nt">&lt;/version&gt;</span>
</span></span><span class="line"><span class="cl"><span class="nt">&lt;/dependency&gt;</span>
</span></span><span class="line"><span class="cl"><span class="nt">&lt;dependency&gt;</span>
</span></span><span class="line"><span class="cl"> <span class="nt">&lt;groupId&gt;</span>org.apache.flink<span class="nt">&lt;/groupId&gt;</span>
</span></span><span class="line"><span class="cl"> <span class="nt">&lt;artifactId&gt;</span>flink-clients<span class="nt">&lt;/artifactId&gt;</span>
</span></span><span class="line"><span class="cl"> <span class="nt">&lt;version&gt;</span>1.18.1<span class="nt">&lt;/version&gt;</span>
</span></span><span class="line"><span class="cl"><span class="nt">&lt;/dependency&gt;</span>
</span></span></code></pre></div><h2 id="binaries">
Binaries
<a class="anchor" href="#binaries">#</a>
</h2>
<p>You can find the binaries on the updated <a href="/downloads/">Downloads page</a>.</p>
<h2 id="docker-images">
Docker Images
<a class="anchor" href="#docker-images">#</a>
</h2>
<ul>
<li><a href="https://hub.docker.com/_/flink/tags?page=1&amp;name=1.18.1">library/flink</a> (official images)</li>
<li><a href="https://hub.docker.com/r/apache/flink/tags?page=1&amp;name=1.18.1">apache/flink</a> (ASF repository)</li>
</ul>
<h2 id="pypi">
PyPi
<a class="anchor" href="#pypi">#</a>
</h2>
<ul>
<li><a href="https://pypi.org/project/apache-flink/1.18.1/">apache-flink==1.18.1</a></li>
</ul>
<h1 id="release-notes">
Release Notes
<a class="anchor" href="#release-notes">#</a>
</h1>
<pre><code> Release Notes - Flink - Version 1.18.1
</code></pre>
<h2> Bug
</h2>
<ul>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-31650'>FLINK-31650</a>] - Incorrect busyMsTimePerSecond metric value for FINISHED task
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-33158'>FLINK-33158</a>] - Cryptic exception when there is a StreamExecSort in JsonPlan
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-33171'>FLINK-33171</a>] - Consistent implicit type coercion support for equal and non-equal comparisons for codegen
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-33223'>FLINK-33223</a>] - MATCH_RECOGNIZE AFTER MATCH clause can not be deserialised from a compiled plan
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-33225'>FLINK-33225</a>] - Python API incorrectly passes `JVM_ARGS` as single argument
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-33313'>FLINK-33313</a>] - RexNodeExtractor fails to extract conditions with binary literal
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-33352'>FLINK-33352</a>] - OpenAPI spec is lacking mappings for discriminator properties
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-33395'>FLINK-33395</a>] - The join hint doesn&#39;t work when appears in subquery
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-33474'>FLINK-33474</a>] - ShowPlan throws undefined exception In Flink Web Submit Page
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-33523'>FLINK-33523</a>] - DataType ARRAY&lt;INT NOT NULL&gt; fails to cast into Object[]
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-33529'>FLINK-33529</a>] - PyFlink fails with &quot;No module named &#39;cloudpickle&quot;
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-33541'>FLINK-33541</a>] - RAND_INTEGER can&#39;t be existed in a IF statement
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-33567'>FLINK-33567</a>] - Flink documentation should only display connector downloads links when a connector is available
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-33588'>FLINK-33588</a>] - Fix Flink Checkpointing Statistics Bug
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-33613'>FLINK-33613</a>] - Python UDF Runner process leak in Process Mode
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-33693'>FLINK-33693</a>] - Force aligned barrier logic doesn&#39;t work when the aligned checkpoint timeout is enabled
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-33752'>FLINK-33752</a>] - When Duration is greater than or equal to 1 day, the display unit is ms.
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-33793'>FLINK-33793</a>] - java.lang.NoSuchMethodError when checkpointing in Google Cloud Storage
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-33872'>FLINK-33872</a>] - Checkpoint history does not display for completed jobs
</li>
</ul>
<h2> New Feature
</h2>
<ul>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-33071'>FLINK-33071</a>] - Log checkpoint statistics
</li>
</ul>
<h2> Improvement
</h2>
<ul>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-24819'>FLINK-24819</a>] - Higher APIServer cpu load after using SharedIndexInformer replaced naked Kubernetes watch
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-32611'>FLINK-32611</a>] - Redirect to Apache Paimon&#39;s link instead of legacy flink table store
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-33041'>FLINK-33041</a>] - Add an introduction about how to migrate DataSet API to DataStream
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-33161'>FLINK-33161</a>] - [benchmark] Java17 profile for benchmarks
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-33501'>FLINK-33501</a>] - Rely on Maven wrapper instead of having custom Maven installation logic
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-33598'>FLINK-33598</a>] - Watch HA configmap via name instead of lables to reduce pressure on APIserver
</li>
</ul>
</p>
</article>
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