ERROR
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-18421'>FLINK-18421</a>] -         Elasticsearch (v6.3.1) sink end-to-end test instable
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-18468'>FLINK-18468</a>] -         TaskExecutorITCase.testJobReExecutionAfterTaskExecutorTermination fails with DuplicateJobSubmissionException
</li>
<li>[<a href='https://issues.apache.org/jira/browse/FLINK-18552'>FLINK-18552</a>] -         Update migration tests in master to cover migratio