i>[<a href='https://issues.apache.org/jira/browse/FLINK-9992'>FLINK-9992</a>] -         FsStorageLocationReferenceTest#testEncodeAndDecode failed in CI
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-13733'>FLINK-13733</a>] -         FlinkKafkaInternalProducerITCase.testHappyPath fails on Travis
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-15170'>FLINK-15170</a>] -         WebFrontendITCase.testCancelYarn fails on travis
</li>
<li>[<a href='https://issues.apache.org/jira/b