Github user sarutak commented on the pull request: https://github.com/apache/spark/pull/1632#issuecomment-51867662 Hi @shivaram , @JoshRosen At first, I have an idea to use poll. I thought it's the easy way. But, if we use poll and catch TimeoutException, I think, ConnectionManager's state is not reset. It means, Future object should wait Promise forever.
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