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<h1>Apache Flink 1.9.2 Released</h1>
<p><i></i></p>
<article>
<p>30 Jan 2020 Hequn Cheng (<a href="https://twitter.com/HequnC">@HequnC</a>)</p>
<p>The Apache Flink community released the second bugfix version of the Apache Flink 1.9 series.</p>
<p>This release includes 117 fixes and minor improvements for Flink 1.9.1. The list below includes a detailed list of all fixes and improvements.</p>
<p>We highly recommend all users to upgrade to Flink 1.9.2.</p>
<p>Updated Maven dependencies:</p>
<div class="highlight"><pre><code class="language-xml"><span class="nt">&lt;dependency&gt;</span>
<span class="nt">&lt;groupId&gt;</span>org.apache.flink<span class="nt">&lt;/groupId&gt;</span>
<span class="nt">&lt;artifactId&gt;</span>flink-java<span class="nt">&lt;/artifactId&gt;</span>
<span class="nt">&lt;version&gt;</span>1.9.2<span class="nt">&lt;/version&gt;</span>
<span class="nt">&lt;/dependency&gt;</span>
<span class="nt">&lt;dependency&gt;</span>
<span class="nt">&lt;groupId&gt;</span>org.apache.flink<span class="nt">&lt;/groupId&gt;</span>
<span class="nt">&lt;artifactId&gt;</span>flink-streaming-java_2.11<span class="nt">&lt;/artifactId&gt;</span>
<span class="nt">&lt;version&gt;</span>1.9.2<span class="nt">&lt;/version&gt;</span>
<span class="nt">&lt;/dependency&gt;</span>
<span class="nt">&lt;dependency&gt;</span>
<span class="nt">&lt;groupId&gt;</span>org.apache.flink<span class="nt">&lt;/groupId&gt;</span>
<span class="nt">&lt;artifactId&gt;</span>flink-clients_2.11<span class="nt">&lt;/artifactId&gt;</span>
<span class="nt">&lt;version&gt;</span>1.9.2<span class="nt">&lt;/version&gt;</span>
<span class="nt">&lt;/dependency&gt;</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-12122">FLINK-12122</a>] - Spread out tasks evenly across all available registered TaskManagers
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-13360">FLINK-13360</a>] - Add documentation for HBase connector for Table API &amp; SQL
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-13361">FLINK-13361</a>] - Add documentation for JDBC connector for Table API &amp; SQL
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-13723">FLINK-13723</a>] - Use liquid-c for faster doc generation
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-13724">FLINK-13724</a>] - Remove unnecessary whitespace from the docs&#39; sidenav
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-13725">FLINK-13725</a>] - Use sassc for faster doc generation
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-13726">FLINK-13726</a>] - Build docs with jekyll 4.0.0.pre.beta1
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-13791">FLINK-13791</a>] - Speed up sidenav by using group_by
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-13817">FLINK-13817</a>] - Expose whether web submissions are enabled
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-13818">FLINK-13818</a>] - Check whether web submission are enabled
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14535">FLINK-14535</a>] - Cast exception is thrown when count distinct on decimal fields
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14735">FLINK-14735</a>] - Improve batch schedule check input consumable performance
</li>
</ul>
<h2> Bug
</h2>
<ul>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-10377">FLINK-10377</a>] - Remove precondition in TwoPhaseCommitSinkFunction.notifyCheckpointComplete
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-10435">FLINK-10435</a>] - Client sporadically hangs after Ctrl + C
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-11120">FLINK-11120</a>] - TIMESTAMPADD function handles TIME incorrectly
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-11835">FLINK-11835</a>] - ZooKeeperLeaderElectionITCase.testJobExecutionOnClusterWithLeaderChange failed
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-12342">FLINK-12342</a>] - Yarn Resource Manager Acquires Too Many Containers
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-12399">FLINK-12399</a>] - FilterableTableSource does not use filters on job run
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-13184">FLINK-13184</a>] - Starting a TaskExecutor blocks the YarnResourceManager&#39;s main thread
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-13589">FLINK-13589</a>] - DelimitedInputFormat index error on multi-byte delimiters with whole file input splits
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-13702">FLINK-13702</a>] - BaseMapSerializerTest.testDuplicate fails on Travis
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-13708">FLINK-13708</a>] - Transformations should be cleared because a table environment could execute multiple job
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-13740">FLINK-13740</a>] - TableAggregateITCase.testNonkeyedFlatAggregate failed on Travis
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-13749">FLINK-13749</a>] - Make Flink client respect classloading policy
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-13758">FLINK-13758</a>] - Failed to submit JobGraph when registered hdfs file in DistributedCache
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-13799">FLINK-13799</a>] - Web Job Submit Page displays stream of error message when web submit is disables in the config
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-13827">FLINK-13827</a>] - Shell variable should be escaped in start-scala-shell.sh
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-13862">FLINK-13862</a>] - Update Execution Plan docs
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-13945">FLINK-13945</a>] - Instructions for building flink-shaded against vendor repository don&#39;t work
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-13969">FLINK-13969</a>] - Resuming Externalized Checkpoint (rocks, incremental, scale down) end-to-end test fails on Travis
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-13995">FLINK-13995</a>] - Fix shading of the licence information of netty
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-13999">FLINK-13999</a>] - Correct the documentation of MATCH_RECOGNIZE
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14066">FLINK-14066</a>] - Pyflink building failure in master and 1.9.0 version
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14074">FLINK-14074</a>] - MesosResourceManager can&#39;t create new taskmanagers in Session Cluster Mode.
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14175">FLINK-14175</a>] - Upgrade KPL version in flink-connector-kinesis to fix application OOM
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14200">FLINK-14200</a>] - Temporal Table Function Joins do not work on Tables (only TableSources) on the query side
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14235">FLINK-14235</a>] - Kafka010ProducerITCase&gt;KafkaProducerTestBase.testOneToOneAtLeastOnceCustomOperator fails on travis
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14315">FLINK-14315</a>] - NPE with JobMaster.disconnectTaskManager
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14337">FLINK-14337</a>] - HistoryServer does not handle NPE on corruped archives properly
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14347">FLINK-14347</a>] - YARNSessionFIFOITCase.checkForProhibitedLogContents found a log with prohibited string
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14355">FLINK-14355</a>] - Example code in state processor API docs doesn&#39;t compile
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14370">FLINK-14370</a>] - KafkaProducerAtLeastOnceITCase&gt;KafkaProducerTestBase.testOneToOneAtLeastOnceRegularSink fails on Travis
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14382">FLINK-14382</a>] - Incorrect handling of FLINK_PLUGINS_DIR on Yarn
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14398">FLINK-14398</a>] - Further split input unboxing code into separate methods
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14413">FLINK-14413</a>] - Shade-plugin ApacheNoticeResourceTransformer uses platform-dependent encoding
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14434">FLINK-14434</a>] - Dispatcher#createJobManagerRunner should not start JobManagerRunner
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14445">FLINK-14445</a>] - Python module build failed when making sdist
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14447">FLINK-14447</a>] - Network metrics doc table render confusion
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14459">FLINK-14459</a>] - Python module build hangs
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14524">FLINK-14524</a>] - PostgreSQL JDBC sink generates invalid SQL in upsert mode
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14547">FLINK-14547</a>] - UDF cannot be in the join condition in blink planner
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14561">FLINK-14561</a>] - Don&#39;t write FLINK_PLUGINS_DIR ENV variable to Flink configuration
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14562">FLINK-14562</a>] - RMQSource leaves idle consumer after closing
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14574">FLINK-14574</a>] - flink-s3-fs-hadoop doesn&#39;t work with plugins mechanism
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14589">FLINK-14589</a>] - Redundant slot requests with the same AllocationID leads to inconsistent slot table
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14641">FLINK-14641</a>] - Fix description of metric `fullRestarts`
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14673">FLINK-14673</a>] - Shouldn&#39;t expect HMS client to throw NoSuchObjectException for non-existing function
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14683">FLINK-14683</a>] - RemoteStreamEnvironment&#39;s construction function has a wrong method
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14701">FLINK-14701</a>] - Slot leaks if SharedSlotOversubscribedException happens
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14784">FLINK-14784</a>] - CsvTableSink miss delimiter when row start with null member
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14817">FLINK-14817</a>] - &quot;Streaming Aggregation&quot; document contains misleading code examples
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14846">FLINK-14846</a>] - Correct the default writerbuffer size documentation of RocksDB
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14910">FLINK-14910</a>] - DisableAutoGeneratedUIDs fails on keyBy
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14930">FLINK-14930</a>] - OSS Filesystem Uses Wrong Shading Prefix
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14949">FLINK-14949</a>] - Task cancellation can be stuck against out-of-thread error
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14951">FLINK-14951</a>] - State TTL backend end-to-end test fail when taskManager has multiple slot
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14953">FLINK-14953</a>] - Parquet table source should use schema type to build FilterPredicate
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14960">FLINK-14960</a>] - Dependency shading of table modules test fails on Travis
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14976">FLINK-14976</a>] - Cassandra Connector leaks Semaphore on Throwable; hangs on close
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-15001">FLINK-15001</a>] - The digest of sub-plan reuse should contain retraction traits for stream physical nodes
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-15013">FLINK-15013</a>] - Flink (on YARN) sometimes needs too many slots
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-15030">FLINK-15030</a>] - Potential deadlock for bounded blocking ResultPartition.
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-15036">FLINK-15036</a>] - Container startup error will be handled out side of the YarnResourceManager&#39;s main thread
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-15063">FLINK-15063</a>] - Input group and output group of the task metric are reversed
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-15065">FLINK-15065</a>] - RocksDB configurable options doc description error
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-15076">FLINK-15076</a>] - Source thread should be interrupted during the Task cancellation
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-15234">FLINK-15234</a>] - Hive table created from flink catalog table shouldn&#39;t have null properties in parameters
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-15240">FLINK-15240</a>] - is_generic key is missing for Flink table stored in HiveCatalog
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-15259">FLINK-15259</a>] - HiveInspector.toInspectors() should convert Flink constant to Hive constant
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-15266">FLINK-15266</a>] - NPE in blink planner code gen
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-15361">FLINK-15361</a>] - ParquetTableSource should pass predicate in projectFields
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-15412">FLINK-15412</a>] - LocalExecutorITCase#testParameterizedTypes failed in travis
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-15413">FLINK-15413</a>] - ScalarOperatorsTest failed in travis
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-15418">FLINK-15418</a>] - StreamExecMatchRule not set FlinkRelDistribution
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-15421">FLINK-15421</a>] - GroupAggsHandler throws java.time.LocalDateTime cannot be cast to java.sql.Timestamp
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-15435">FLINK-15435</a>] - ExecutionConfigTests.test_equals_and_hash in pyFlink fails when cpu core numbers is 6
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-15443">FLINK-15443</a>] - Use JDBC connector write FLOAT value occur ClassCastException
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-15478">FLINK-15478</a>] - FROM_BASE64 code gen type wrong
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-15489">FLINK-15489</a>] - WebUI log refresh not working
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-15522">FLINK-15522</a>] - Misleading root cause exception when cancelling the job
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-15523">FLINK-15523</a>] - ConfigConstants generally excluded from japicmp
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-15543">FLINK-15543</a>] - Apache Camel not bundled but listed in flink-dist NOTICE
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-15549">FLINK-15549</a>] - Integer overflow in SpillingResettableMutableObjectIterator
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-15577">FLINK-15577</a>] - WindowAggregate RelNodes missing Window specs in digest
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-15615">FLINK-15615</a>] - Docs: wrong guarantees stated for the file sink
</li>
</ul>
<h2> Improvement
</h2>
<ul>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-11135">FLINK-11135</a>] - Reorder Hadoop config loading in HadoopUtils
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-12848">FLINK-12848</a>] - Method equals() in RowTypeInfo should consider fieldsNames
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-13729">FLINK-13729</a>] - Update website generation dependencies
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14008">FLINK-14008</a>] - Auto-generate binary licensing
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14104">FLINK-14104</a>] - Bump Jackson to 2.10.1
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14123">FLINK-14123</a>] - Lower the default value of taskmanager.memory.fraction
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14206">FLINK-14206</a>] - Let fullRestart metric count fine grained restarts as well
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14215">FLINK-14215</a>] - Add Docs for TM and JM Environment Variable Setting
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14251">FLINK-14251</a>] - Add FutureUtils#forward utility
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14334">FLINK-14334</a>] - ElasticSearch docs refer to non-existent ExceptionUtils.containsThrowable
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14335">FLINK-14335</a>] - ExampleIntegrationTest in testing docs is incorrect
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14408">FLINK-14408</a>] - In OldPlanner, UDF open method can not be invoke when SQL is optimized
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14557">FLINK-14557</a>] - Clean up the package of py4j
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14639">FLINK-14639</a>] - Metrics User Scope docs refer to wrong class
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14646">FLINK-14646</a>] - Check non-null for key in KeyGroupStreamPartitioner
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14825">FLINK-14825</a>] - Rework state processor api documentation
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-14995">FLINK-14995</a>] - Kinesis NOTICE is incorrect
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-15113">FLINK-15113</a>] - fs.azure.account.key not hidden from global configuration
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-15554">FLINK-15554</a>] - Bump jetty-util-ajax to 9.3.24
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-15657">FLINK-15657</a>] - Fix the python table api doc link in Python API tutorial
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-15700">FLINK-15700</a>] - Improve Python API Tutorial doc
</li>
<li>[<a href="https://issues.apache.org/jira/browse/FLINK-15726">FLINK-15726</a>] - Fixing error message in StreamExecTableSourceScan
</li>
</ul>
</article>
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