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<meta name="description" content="The Apache Flink community released the first bugfix version of the Apache Flink 1.6 series.
This release includes 60 fixes and minor improvements for Flink 1.6.1. The list below includes a detailed list of all fixes.
We highly recommend all users to upgrade to Flink 1.6.1.
Updated Maven dependencies:
&lt;dependency&gt; &lt;groupId&gt;org.apache.flink&lt;/groupId&gt; &lt;artifactId&gt;flink-java&lt;/artifactId&gt; &lt;version&gt;1.6.1&lt;/version&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;org.apache.flink&lt;/groupId&gt; &lt;artifactId&gt;flink-streaming-java_2.11&lt;/artifactId&gt; &lt;version&gt;1.6.1&lt;/version&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;org.apache.flink&lt;/groupId&gt; &lt;artifactId&gt;flink-clients_2.11&lt;/artifactId&gt; &lt;version&gt;1.6.1&lt;/version&gt; &lt;/dependency&gt; You can find the binaries on the updated Downloads page.">
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<meta property="og:description" content="The Apache Flink community released the first bugfix version of the Apache Flink 1.6 series.
This release includes 60 fixes and minor improvements for Flink 1.6.1. The list below includes a detailed list of all fixes.
We highly recommend all users to upgrade to Flink 1.6.1.
Updated Maven dependencies:
&lt;dependency&gt; &lt;groupId&gt;org.apache.flink&lt;/groupId&gt; &lt;artifactId&gt;flink-java&lt;/artifactId&gt; &lt;version&gt;1.6.1&lt;/version&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;org.apache.flink&lt;/groupId&gt; &lt;artifactId&gt;flink-streaming-java_2.11&lt;/artifactId&gt; &lt;version&gt;1.6.1&lt;/version&gt; &lt;/dependency&gt; &lt;dependency&gt; &lt;groupId&gt;org.apache.flink&lt;/groupId&gt; &lt;artifactId&gt;flink-clients_2.11&lt;/artifactId&gt; &lt;version&gt;1.6.1&lt;/version&gt; &lt;/dependency&gt; You can find the binaries on the updated Downloads page." />
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<title>Apache Flink 1.6.1 Released | Apache Flink</title>
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<h1>
<a href="/2018/09/20/apache-flink-1.6.1-released/">Apache Flink 1.6.1 Released</a>
</h1>
September 20, 2018 -
<p><p>The Apache Flink community released the first bugfix version of the Apache Flink 1.6 series.</p>
<p>This release includes 60 fixes and minor improvements for Flink 1.6.1. The list below includes a detailed list of all fixes.</p>
<p>We highly recommend all users to upgrade to Flink 1.6.1.</p>
<p>Updated Maven dependencies:</p>
<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>1.6.1<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_2.11<span class="nt">&lt;/artifactId&gt;</span>
</span></span><span class="line"><span class="cl"> <span class="nt">&lt;version&gt;</span>1.6.1<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_2.11<span class="nt">&lt;/artifactId&gt;</span>
</span></span><span class="line"><span class="cl"> <span class="nt">&lt;version&gt;</span>1.6.1<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><p>You can find the binaries on the updated <a href="http://flink.apache.org/downloads.html">Downloads page</a>.</p>
<p>List of resolved issues:</p>
<h2> Sub-task
</h2>
<ul>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-9637'>FLINK-9637</a>] - Add public user documentation for TTL feature
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10068'>FLINK-10068</a>] - Add documentation for async/RocksDB-based timers
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10085'>FLINK-10085</a>] - Update AbstractOperatorRestoreTestBase
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10087'>FLINK-10087</a>] - Update BucketingSinkMigrationTest
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10089'>FLINK-10089</a>] - Update FlinkKafkaConsumerBaseMigrationTest
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10090'>FLINK-10090</a>] - Update ContinuousFileProcessingMigrationTest
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10091'>FLINK-10091</a>] - Update WindowOperatorMigrationTest
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10092'>FLINK-10092</a>] - Update StatefulJobSavepointMigrationITCase
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10109'>FLINK-10109</a>] - Add documentation for StreamingFileSink
</li>
</ul>
<h2> Bug
</h2>
<ul>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-9289'>FLINK-9289</a>] - Parallelism of generated operators should have max parallism of input
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-9546'>FLINK-9546</a>] - The heartbeatTimeoutIntervalMs of HeartbeatMonitor should be larger than 0
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-9693'>FLINK-9693</a>] - Possible memory leak in jobmanager retaining archived checkpoints
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-9972'>FLINK-9972</a>] - Debug memory logging not working
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10011'>FLINK-10011</a>] - Old job resurrected during HA failover
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10063'>FLINK-10063</a>] - Jepsen: Automatically restart Mesos Processes
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10101'>FLINK-10101</a>] - Mesos web ui url is missing.
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10105'>FLINK-10105</a>] - Test failure because of jobmanager.execution.failover-strategy is outdated
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10115'>FLINK-10115</a>] - Content-length limit is also applied to FileUploads
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10116'>FLINK-10116</a>] - createComparator fails on case class with Unit type fields prior to the join-key
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10141'>FLINK-10141</a>] - Reduce lock contention introduced with 1.5
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10142'>FLINK-10142</a>] - Reduce synchronization overhead for credit notifications
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10150'>FLINK-10150</a>] - Chained batch operators interfere with each other other
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10151'>FLINK-10151</a>] - [State TTL] Fix false recursion call in TransformingStateTableKeyGroupPartitioner.tryAddToSource
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10154'>FLINK-10154</a>] - Make sure we always read at least one record in KinesisConnector
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10169'>FLINK-10169</a>] - RowtimeValidator fails with custom TimestampExtractor
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10172'>FLINK-10172</a>] - Inconsistentcy in ExpressionParser and ExpressionDsl for order by asc/desc
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10192'>FLINK-10192</a>] - SQL Client table visualization mode does not update correctly
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10193'>FLINK-10193</a>] - Default RPC timeout is used when triggering savepoint via JobMasterGateway
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10204'>FLINK-10204</a>] - StreamElementSerializer#copy broken for LatencyMarkers
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10255'>FLINK-10255</a>] - Standby Dispatcher locks submitted JobGraphs
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10261'>FLINK-10261</a>] - INSERT INTO does not work with ORDER BY clause
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10267'>FLINK-10267</a>] - [State] Fix arbitrary iterator access on RocksDBMapIterator
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10269'>FLINK-10269</a>] - Elasticsearch 6 UpdateRequest fail because of binary incompatibility
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10283'>FLINK-10283</a>] - FileCache logs unnecessary warnings
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10293'>FLINK-10293</a>] - RemoteStreamEnvironment does not forward port to RestClusterClient
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10314'>FLINK-10314</a>] - Blocking calls in Execution Graph creation bring down cluster
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10328'>FLINK-10328</a>] - Stopping the ZooKeeperSubmittedJobGraphStore should release all currently held locks
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10329'>FLINK-10329</a>] - Fail with exception if job cannot be removed by ZooKeeperSubmittedJobGraphStore#removeJobGraph
</li>
</ul>
<h2> New Feature
</h2>
<ul>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10022'>FLINK-10022</a>] - Add metrics for input/output buffers
</li>
</ul>
<h2> Improvement
</h2>
<ul>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-9013'>FLINK-9013</a>] - Document yarn.containers.vcores only being effective when adapting YARN config
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-9446'>FLINK-9446</a>] - Compatibility table not up-to-date
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-9795'>FLINK-9795</a>] - Update Mesos documentation for flip6
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-9859'>FLINK-9859</a>] - More Akka config options
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-9899'>FLINK-9899</a>] - Add more metrics to the Kinesis source connector
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-9962'>FLINK-9962</a>] - allow users to specify TimeZone in DateTimeBucketer
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10001'>FLINK-10001</a>] - Improve Kubernetes documentation
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10006'>FLINK-10006</a>] - Improve logging in BarrierBuffer
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10020'>FLINK-10020</a>] - Kinesis Consumer listShards should support more recoverable exceptions
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10082'>FLINK-10082</a>] - Initialize StringBuilder in Slf4jReporter with estimated size
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10094'>FLINK-10094</a>] - Always backup default config for end-to-end tests
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10110'>FLINK-10110</a>] - Harden e2e Kafka shutdown
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10131'>FLINK-10131</a>] - Improve logging around ResultSubpartition
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10137'>FLINK-10137</a>] - YARN: Log completed Containers
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10164'>FLINK-10164</a>] - Add support for resuming from savepoints to StandaloneJobClusterEntrypoint
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10170'>FLINK-10170</a>] - Support string representation for map and array types in descriptor-based Table API
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10185'>FLINK-10185</a>] - Make ZooKeeperStateHandleStore#releaseAndTryRemove synchronous
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10223'>FLINK-10223</a>] - TaskManagers should log their ResourceID during startup
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10301'>FLINK-10301</a>] - Allow a custom Configuration in StreamNetworkBenchmarkEnvironment
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10325'>FLINK-10325</a>] - [State TTL] Refactor TtlListState to use only loops, no java stream API for performance
</li>
</ul>
<h2> Test
</h2>
<ul>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-10084'>FLINK-10084</a>] - Migration tests weren&#39;t updated for 1.5
</li>
</ul></p>
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