Github user zhangminglei commented on a diff in the pull request: https://github.com/apache/flink/pull/5600#discussion_r171754724 --- Diff: flink-runtime/src/main/java/org/apache/flink/runtime/minicluster/MiniCluster.java --- @@ -178,6 +181,13 @@ public URI getRestAddress() { } } + public HighAvailabilityServices getHighAvailabilityServices() { + synchronized (lock) { + checkState(running, "MiniCluster is not yet running."); --- End diff -- I am curious about the lock in this place. Is not such a scene as follow ? Some tests or ITCase running in maven test simultaneously. And might be change this object at the same time. So, that is why we should have a lock here ?
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