Github user liyezhang556520 commented on the pull request:
https://github.com/apache/spark/pull/3089#issuecomment-61646833
Yes, you are right, the header used to be there before
[SPARK-1940](https://github.com/apache/spark/pull/895), and now it will always
be overwritten. Since this header only exists in Standalone mode. In Yarn mode,
there is no such header, So that's why I just removed it. Of course, in
consideration of postprocess with log, it would be better with more information
in log file. @srowen , if someone else also think we shall remain this command
info in stderr, I'll add it back.
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