Github user tillrohrmann commented on a diff in the pull request:
https://github.com/apache/flink/pull/5579#discussion_r170866611
--- Diff:
flink-test-utils-parent/flink-test-utils/src/main/java/org/apache/flink/test/util/MiniClusterResource.java
---
@@ -62,6 +68,8 @@
private TestEnvironment executionEnvironment;
+ private ClusterClient clusterClient;
--- End diff --
The cluster client needs to be shut down as well.---
