rowse/FLINK-19361'>FLINK-19361</a>] -         Make HiveCatalog thread safe
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-19398'>FLINK-19398</a>] -         Hive connector fails with IllegalAccessError if submitted as usercode
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-19401'>FLINK-19401</a>] -         Job stuck in restart loop due to excessive checkpoint recoveries which block the JobMaster
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-19423'>FLINK-194