https://issues.apache.org/jira/browse/FLINK-19892'>FLINK-19892</a>] -         Replace __metaclass__ field with metaclass keyword
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-20049'>FLINK-20049</a>] -         Simplify handling of &quot;request split&quot;.
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-20055'>FLINK-20055</a>] -         Datadog API Key exposed in Flink JobManager logs
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-20142'>FLINK-20142</a>] - 