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<h1>
<a href="/2015/09/01/apache-flink-0.9.1-available/">Apache Flink 0.9.1 available</a>
</h1>
September 1, 2015 -
<p><p>The Flink community is happy to announce that Flink 0.9.1 is now available.</p>
<p>0.9.1 is a maintenance release, which includes a lot of minor fixes across
several parts of the system. We suggest all users of Flink to work with this
latest stable version.</p>
<p><a href="/downloads.html">Download the release</a> and [check out the
documentation]({{ site.docs-stable }}). Feedback through the Flink mailing lists
is, as always, very welcome!</p>
<p>The following <a href="https://issues.apache.org/jira/issues/?jql=project%20%3D%20FLINK%20AND%20status%20in%20%28Resolved%2C%20Closed%29%20AND%20fixVersion%20%3D%200.9.1">issues were fixed</a>
for this release:</p>
<ul>
<li><a href="https://issues.apache.org/jira/browse/FLINK-1916">FLINK-1916</a> EOFException when running delta-iteration job</li>
<li><a href="https://issues.apache.org/jira/browse/FLINK-2089">FLINK-2089</a> &ldquo;Buffer recycled&rdquo; IllegalStateException during cancelling</li>
<li><a href="https://issues.apache.org/jira/browse/FLINK-2189">FLINK-2189</a> NullPointerException in MutableHashTable</li>
<li><a href="https://issues.apache.org/jira/browse/FLINK-2205">FLINK-2205</a> Confusing entries in JM Webfrontend Job Configuration section</li>
<li><a href="https://issues.apache.org/jira/browse/FLINK-2229">FLINK-2229</a> Data sets involving non-primitive arrays cannot be unioned</li>
<li><a href="https://issues.apache.org/jira/browse/FLINK-2238">FLINK-2238</a> Scala ExecutionEnvironment.fromCollection does not work with Sets</li>
<li><a href="https://issues.apache.org/jira/browse/FLINK-2248">FLINK-2248</a> Allow disabling of sdtout logging output</li>
<li><a href="https://issues.apache.org/jira/browse/FLINK-2257">FLINK-2257</a> Open and close of RichWindowFunctions is not called</li>
<li><a href="https://issues.apache.org/jira/browse/FLINK-2262">FLINK-2262</a> ParameterTool API misnamed function</li>
<li><a href="https://issues.apache.org/jira/browse/FLINK-2280">FLINK-2280</a> GenericTypeComparator.compare() does not respect ascending flag</li>
<li><a href="https://issues.apache.org/jira/browse/FLINK-2285">FLINK-2285</a> Active policy emits elements of the last window twice</li>
<li><a href="https://issues.apache.org/jira/browse/FLINK-2286">FLINK-2286</a> Window ParallelMerge sometimes swallows elements of the last window</li>
<li><a href="https://issues.apache.org/jira/browse/FLINK-2293">FLINK-2293</a> Division by Zero Exception</li>
<li><a href="https://issues.apache.org/jira/browse/FLINK-2298">FLINK-2298</a> Allow setting custom YARN application names through the CLI</li>
<li><a href="https://issues.apache.org/jira/browse/FLINK-2347">FLINK-2347</a> Rendering problem with Documentation website</li>
<li><a href="https://issues.apache.org/jira/browse/FLINK-2353">FLINK-2353</a> Hadoop mapred IOFormat wrappers do not respect JobConfigurable interface</li>
<li><a href="https://issues.apache.org/jira/browse/FLINK-2356">FLINK-2356</a> Resource leak in checkpoint coordinator</li>
<li><a href="https://issues.apache.org/jira/browse/FLINK-2361">FLINK-2361</a> CompactingHashTable loses entries</li>
<li><a href="https://issues.apache.org/jira/browse/FLINK-2362">FLINK-2362</a> distinct is missing in DataSet API documentation</li>
<li><a href="https://issues.apache.org/jira/browse/FLINK-2381">FLINK-2381</a> Possible class not found Exception on failed partition producer</li>
<li><a href="https://issues.apache.org/jira/browse/FLINK-2384">FLINK-2384</a> Deadlock during partition spilling</li>
<li><a href="https://issues.apache.org/jira/browse/FLINK-2386">FLINK-2386</a> Implement Kafka connector using the new Kafka Consumer API</li>
<li><a href="https://issues.apache.org/jira/browse/FLINK-2394">FLINK-2394</a> HadoopOutFormat OutputCommitter is default to FileOutputCommiter</li>
<li><a href="https://issues.apache.org/jira/browse/FLINK-2412">FLINK-2412</a> Race leading to IndexOutOfBoundsException when querying for buffer while releasing SpillablePartition</li>
<li><a href="https://issues.apache.org/jira/browse/FLINK-2422">FLINK-2422</a> Web client is showing a blank page if &ldquo;Meta refresh&rdquo; is disabled in browser</li>
<li><a href="https://issues.apache.org/jira/browse/FLINK-2424">FLINK-2424</a> InstantiationUtil.serializeObject(Object) does not close output stream</li>
<li><a href="https://issues.apache.org/jira/browse/FLINK-2437">FLINK-2437</a> TypeExtractor.analyzePojo has some problems around the default constructor detection</li>
<li><a href="https://issues.apache.org/jira/browse/FLINK-2442">FLINK-2442</a> PojoType fields not supported by field position keys</li>
<li><a href="https://issues.apache.org/jira/browse/FLINK-2447">FLINK-2447</a> TypeExtractor returns wrong type info when a Tuple has two fields of the same POJO type</li>
<li><a href="https://issues.apache.org/jira/browse/FLINK-2450">FLINK-2450</a> IndexOutOfBoundsException in KryoSerializer</li>
<li><a href="https://issues.apache.org/jira/browse/FLINK-2460">FLINK-2460</a> ReduceOnNeighborsWithExceptionITCase failure</li>
<li><a href="https://issues.apache.org/jira/browse/FLINK-2527">FLINK-2527</a> If a VertexUpdateFunction calls setNewVertexValue more than once, the MessagingFunction will only see the first value set</li>
<li><a href="https://issues.apache.org/jira/browse/FLINK-2540">FLINK-2540</a> LocalBufferPool.requestBuffer gets into infinite loop</li>
<li><a href="https://issues.apache.org/jira/browse/FLINK-2542">FLINK-2542</a> It should be documented that it is required from a join key to override hashCode(), when it is not a POJO</li>
<li><a href="https://issues.apache.org/jira/browse/FLINK-2555">FLINK-2555</a> Hadoop Input/Output Formats are unable to access secured HDFS clusters</li>
<li><a href="https://issues.apache.org/jira/browse/FLINK-2560">FLINK-2560</a> Flink-Avro Plugin cannot be handled by Eclipse</li>
<li><a href="https://issues.apache.org/jira/browse/FLINK-2572">FLINK-2572</a> Resolve base path of symlinked executable</li>
<li><a href="https://issues.apache.org/jira/browse/FLINK-2584">FLINK-2584</a> ASM dependency is not shaded away</li>
</ul>
</p>
</article>
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