erator should skip key groups that don&#39;t have a defined offset
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-19750'>FLINK-19750</a>] -         Deserializer is not opened in Kafka consumer when restoring from state
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-19755'>FLINK-19755</a>] -         Fix CEP documentation error of the example in &#39;After Match Strategy&#39; section
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-19775'>FLINK-19775</a>] -    