LINK-17825'>FLINK-17825</a>] -         HA end-to-end gets killed due to timeout
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-18128'>FLINK-18128</a>] -         CoordinatedSourceITCase.testMultipleSources gets stuck
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-18196'>FLINK-18196</a>] -         flink throws `NullPointerException` when executeCheckpointing
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-18222'>FLINK-18222</a>] -         &quot;Avro Confluent 