      SourceCoordinator should avoid fail job multiple times.
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-19557'>FLINK-19557</a>] -         Issue retrieving leader after zookeeper session reconnect
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-19585'>FLINK-19585</a>] -         UnalignedCheckpointCompatibilityITCase.test:97-&gt;runAndTakeSavepoint: &quot;Not all required tasks are currently running.&quot;
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-19