wangyang0918 commented on issue #10010: [FLINK-10435][yarn]Client sporadically hangs after Ctrl + C URL: https://github.com/apache/flink/pull/10010#issuecomment-546838734 > Thanks for opening this pull request @wangyang0918 ! Generally it looks good. I have one question: > > What if `YarnClient#start` or `YarnClient#stop` throws an exception? Do you take them into consideration? @TisonKun Thanks for your comments. The shut down hook is a best effort clean up. And yarn client only throws `RuntimeException`. Also when we try to start the yarn client in shut down hook, another yarn client of `YarnClusterDescriptor` is running. So it should be started and stopped successfully.
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