Github user tillrohrmann commented on a diff in the pull request: https://github.com/apache/flink/pull/5771#discussion_r177375838 --- Diff: flink-tests/src/test/java/org/apache/flink/test/accumulators/AccumulatorLiveITCase.java --- @@ -167,6 +172,9 @@ private static void submitJobAndVerifyResults(JobGraph jobGraph) throws Exceptio NotifyingMapper.shutdownLatch.trigger(); } finally { NotifyingMapper.shutdownLatch.trigger(); + + // wait for the completion of the job + clusterClient.requestJobResult(jobGraph.getJobID()).get(); --- End diff -- It is true that this introduces a new pattern, but I think it reflects more how the future `ClusterClient` abstraction will work. The `RestClusterClient` already has these methods and uses them to implement the `ClusterClient#submitJob` call. I think it is not a big problem that some of the tests use polling and this one waits on the future. They can be refactored once we introduce the new `ClusterClient` interface. Moreover, this tests runs explicitly only with Flip-6.
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