Github user shijinkui commented on the issue: https://github.com/apache/flink/pull/2459 @StephanEwen I can accept "don't change it unless it is broken". I explain why I made such a insipid and too much changes PR. I have such habit, that is the code need continuous improvement and refactor until have no any improvement at this time. That's why i doesn't want to tolerate bad smell code. I think such matter belong to myself' habit. The others like this PR are generated conveniently when I read Flink code. These PRs are not important, can be close at any time. ï¼ï¼
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