this test is currently failing, and the travis logs aren't that helpful.
We could write the assertion like this to make the error message more helpful:
```
optionalException = ExceptionUtils.findThrowable(ee,
ConnectionClosedException.class)
if (!optionalException.isPresent()) {
throw ee;
}
```[ Full content available at: https://github.com/apache/flink/pull/6763 ] This message was relayed via gitbox.apache.org for [email protected]
