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 This release includes 73 fixes and minor improvements for Flink 1.10.1. The list below includes a detailed list of all fixes and improvements.
 We highly recommend all users to upgrade to Flink 1.10.2.
 Note After FLINK-18242, the deprecated `OptionsFactory` and `ConfigurableOptionsFactory` classes are removed (not applicable for release-1.10), please use `RocksDBOptionsFactory` and `ConfigurableRocksDBOptionsFactory` instead. Please also recompile your application codes if any class extending `DefaultConfigurableOptionsFactory` Note After FLINK-17800 by default we will set `setTotalOrderSeek` to true for RocksDB&#39;s `ReadOptions`, to prevent user from miss using `optimizeForPointLookup`.">
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 <meta property="og:description" content="The Apache Flink community released the second bugfix version of the Apache Flink 1.10 series.
 This release includes 73 fixes and minor improvements for Flink 1.10.1. The list below includes a detailed list of all fixes and improvements.
 We highly recommend all users to upgrade to Flink 1.10.2.
 Note After FLINK-18242, the deprecated `OptionsFactory` and `ConfigurableOptionsFactory` classes are removed (not applicable for release-1.10), please use `RocksDBOptionsFactory` and `ConfigurableRocksDBOptionsFactory` instead. Please also recompile your application codes if any class extending `DefaultConfigurableOptionsFactory` Note After FLINK-17800 by default we will set `setTotalOrderSeek` to true for RocksDB&#39;s `ReadOptions`, to prevent user from miss using `optimizeForPointLookup`." />
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   <strong>Apache Flink 1.10.2 Released</strong>

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     <h1>
         <a href="/2020/08/25/apache-flink-1.10.2-released/">Apache Flink 1.10.2 Released</a>
     </h1>

   August 25, 2020 -


   Zhu Zhu

   <a href="https://twitter.com/zhuzhv">(@zhuzhv)</a>


     <p><p>The Apache Flink community released the second bugfix version of the Apache Flink 1.10 series.</p>
 <p>This release includes 73 fixes and minor improvements for Flink 1.10.1. The list below includes a detailed list of all fixes and improvements.</p>
 <p>We highly recommend all users to upgrade to Flink 1.10.2.</p>
 <div class="alert alert-info" markdown="1">
 <span class="label label-info" style="display: inline-block"><span class="glyphicon glyphicon-info-sign" aria-hidden="true"></span> Note</span>
 After FLINK-18242, the deprecated `OptionsFactory` and `ConfigurableOptionsFactory` classes are removed (not applicable for release-1.10), please use `RocksDBOptionsFactory` and `ConfigurableRocksDBOptionsFactory` instead. Please also recompile your application codes if any class extending `DefaultConfigurableOptionsFactory`
 </div>
 <div class="alert alert-info" markdown="1">
 <span class="label label-info" style="display: inline-block"><span class="glyphicon glyphicon-info-sign" aria-hidden="true"></span> Note</span>
 After FLINK-17800 by default we will set `setTotalOrderSeek` to true for RocksDB's `ReadOptions`, to prevent user from miss using `optimizeForPointLookup`. Meantime we support customizing `ReadOptions` through `RocksDBOptionsFactory`. Please set `setTotalOrderSeek` back to false if any performance regression observed (normally won't happen according to our testing).
 </div>
 <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>1.10.2<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>1.10.2<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>1.10.2<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="/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-15836'>FLINK-15836</a>] -         Throw fatal error in KubernetesResourceManager when the pods watcher is closed with exception
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-16160'>FLINK-16160</a>] -         Schema#proctime and Schema#rowtime don&#39;t work in TableEnvironment#connect code path
 </li>
 </ul>
 <h2>        Bug
 </h2>
 <ul>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-13689'>FLINK-13689</a>] -         Rest High Level Client for Elasticsearch6.x connector leaks threads if no connection could be established
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-14369'>FLINK-14369</a>] -         KafkaProducerAtLeastOnceITCase&gt;KafkaProducerTestBase.testOneToOneAtLeastOnceCustomOperator fails on Travis
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-14836'>FLINK-14836</a>] -         Unable to set yarn container number for scala shell in yarn mode
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-14894'>FLINK-14894</a>] -         HybridOffHeapUnsafeMemorySegmentTest#testByteBufferWrap failed on Travis
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-15758'>FLINK-15758</a>] -         Investigate potential out-of-memory problems due to managed unsafe memory allocation
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-15849'>FLINK-15849</a>] -         Update SQL-CLIENT document from type to data-type
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-16309'>FLINK-16309</a>] -         ElasticSearch 7 connector is missing in SQL connector list
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-16346'>FLINK-16346</a>] -         BlobsCleanupITCase.testBlobServerCleanupCancelledJob fails on Travis
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-16432'>FLINK-16432</a>] -         Building Hive connector gives problems
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-16451'>FLINK-16451</a>] -         Fix IndexOutOfBoundsException for DISTINCT AGG with constants
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-16510'>FLINK-16510</a>] -         Task manager safeguard shutdown may not be reliable
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-17092'>FLINK-17092</a>] -         Pyflink test BlinkStreamDependencyTests is instable
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-17322'>FLINK-17322</a>] -         Enable latency tracker would corrupt the broadcast state
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-17420'>FLINK-17420</a>] -         Cannot alias Tuple and Row fields when converting DataStream to Table
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-17466'>FLINK-17466</a>] -         toRetractStream doesn&#39;t work correctly with Pojo conversion class
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-17555'>FLINK-17555</a>] -         docstring of pyflink.table.descriptors.FileSystem:1:duplicate object description of pyflink.table.descriptors.FileSystem
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-17558'>FLINK-17558</a>] -         Partitions are released in TaskExecutor Main Thread
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-17562'>FLINK-17562</a>] -         POST /jars/:jarid/plan is not working
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-17578'>FLINK-17578</a>] -         Union of 2 SideOutputs behaviour incorrect
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-17639'>FLINK-17639</a>] -         Document which FileSystems are supported by the StreamingFileSink
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-17643'>FLINK-17643</a>] -         LaunchCoordinatorTest fails
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-17700'>FLINK-17700</a>] -         The callback client of JavaGatewayServer should run in a daemon thread
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-17744'>FLINK-17744</a>] -         StreamContextEnvironment#execute cannot be call JobListener#onJobExecuted
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-17763'>FLINK-17763</a>] -         No log files when starting scala-shell
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-17788'>FLINK-17788</a>] -         scala shell in yarn mode is broken
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-17800'>FLINK-17800</a>] -         RocksDB optimizeForPointLookup results in missing time windows
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-17801'>FLINK-17801</a>] -         TaskExecutorTest.testHeartbeatTimeoutWithResourceManager timeout
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-17809'>FLINK-17809</a>] -         BashJavaUtil script logic does not work for paths with spaces
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-17822'>FLINK-17822</a>] -         Nightly Flink CLI end-to-end test failed with &quot;JavaGcCleanerWrapper$PendingCleanersRunner cannot access class jdk.internal.misc.SharedSecrets&quot; in Java 11
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-17870'>FLINK-17870</a>] -         dependent jars are missing to be shipped to cluster in scala shell
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-17891'>FLINK-17891</a>] -          FlinkYarnSessionCli sets wrong execution.target type
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-17959'>FLINK-17959</a>] -         Exception: &quot;CANCELLED: call already cancelled&quot; is thrown when run python udf
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-18008'>FLINK-18008</a>] -         HistoryServer does not log environment information on startup
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-18012'>FLINK-18012</a>] -         Deactivate slot timeout if TaskSlotTable.tryMarkSlotActive is called
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-18035'>FLINK-18035</a>] -         Executors#newCachedThreadPool could not work as expected
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-18045'>FLINK-18045</a>] -         Fix Kerberos credentials checking to unblock Flink on secured MapR
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-18048'>FLINK-18048</a>] -         &quot;--host&quot; option could not take effect for standalone application cluster
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-18097'>FLINK-18097</a>] -         History server doesn&#39;t clean all job json files
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-18168'>FLINK-18168</a>] -         Error results when use UDAF with Object Array return type
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-18223'>FLINK-18223</a>] -         AvroSerializer does not correctly instantiate GenericRecord
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-18241'>FLINK-18241</a>] -         Custom OptionsFactory in user code not working when configured via flink-conf.yaml
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-18242'>FLINK-18242</a>] -         Custom OptionsFactory settings seem to have no effect on RocksDB
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-18297'>FLINK-18297</a>] -         SQL client: setting execution.type to invalid value shuts down the session
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-18329'>FLINK-18329</a>] -         Dist NOTICE issues
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-18352'>FLINK-18352</a>] -         org.apache.flink.core.execution.DefaultExecutorServiceLoader not thread safe
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-18517'>FLINK-18517</a>] -         kubernetes session test failed with &quot;java.net.SocketException: Broken pipe&quot;
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-18539'>FLINK-18539</a>] -         StreamExecutionEnvironment#addSource(SourceFunction, TypeInformation) doesn&#39;t use the user defined type information
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-18595'>FLINK-18595</a>] -         Deadlock during job shutdown
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-18646'>FLINK-18646</a>] -         Managed memory released check can block RPC thread
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-18663'>FLINK-18663</a>] -         RestServerEndpoint may prevent server shutdown
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-18677'>FLINK-18677</a>] -         ZooKeeperLeaderRetrievalService does not invalidate leader in case of SUSPENDED connection
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-18702'>FLINK-18702</a>] -         Flink elasticsearch connector leaks threads and classloaders thereof
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-18815'>FLINK-18815</a>] -         AbstractCloseableRegistryTest.testClose unstable
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-18821'>FLINK-18821</a>] -         Netty client retry mechanism may cause PartitionRequestClientFactory#createPartitionRequestClient to wait infinitely
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-18859'>FLINK-18859</a>] -         ExecutionGraphNotEnoughResourceTest.testRestartWithSlotSharingAndNotEnoughResources failed with &quot;Condition was not met in given timeout.&quot;
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-18902'>FLINK-18902</a>] -         Cannot serve results of asynchronous REST operations in per-job mode
 </li>
 </ul>
 <h2>        New Feature
 </h2>
 <ul>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-17844'>FLINK-17844</a>] -         Activate japicmp-maven-plugin checks for @PublicEvolving between bug fix releases (x.y.u -&gt; x.y.v)
 </li>
 </ul>
 <h2>        Improvement
 </h2>
 <ul>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-16217'>FLINK-16217</a>] -         SQL Client crashed when any uncatched exception is thrown
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-16225'>FLINK-16225</a>] -         Metaspace Out Of Memory should be handled as Fatal Error in TaskManager
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-16619'>FLINK-16619</a>] -         Misleading SlotManagerImpl logging for slot reports of unknown task manager
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-16717'>FLINK-16717</a>] -         Use headless service for rpc and blob port when flink on K8S
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-17248'>FLINK-17248</a>] -         Make the thread nums of io executor of ClusterEntrypoint and MiniCluster configurable
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-17503'>FLINK-17503</a>] -         Make memory configuration logging more user-friendly
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-17819'>FLINK-17819</a>] -         Yarn error unhelpful when forgetting HADOOP_CLASSPATH
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-17920'>FLINK-17920</a>] -         Add the Python example of Interval Join in Table API doc
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-17945'>FLINK-17945</a>] -         Improve error reporting of Python CI tests
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-17970'>FLINK-17970</a>] -         Increase default value of IO pool executor to 4 * #cores
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-18010'>FLINK-18010</a>] -         Add more logging to HistoryServer
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-18501'>FLINK-18501</a>] -         Mapping of Pluggable Filesystems to scheme is not properly logged
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-18644'>FLINK-18644</a>] -         Remove obsolete doc for hive connector
 </li>
 <li>[<a href='https://issues.apache.org/jira/browse/FLINK-18772'>FLINK-18772</a>] -         Hide submit job web ui elements when running in per-job/application mode
 </li>
 </ul>
 </p>
 </article>


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