se/FLINK-17341'>FLINK-17341</a>] -         freeSlot in TaskExecutor.closeJobManagerConnection cause ConcurrentModificationException
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-17458'>FLINK-17458</a>] -         TaskExecutorSubmissionTest#testFailingScheduleOrUpdateConsumers
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-17677'>FLINK-17677</a>] -         FLINK_LOG_PREFIX recommended in docs is not always available
</li>
<li>[<a href='https://issues.apache.org/jira/browse/F