Github user mxm commented on the pull request:
https://github.com/apache/flink/pull/796#issuecomment-110002485
It can be a backwards-compatibility problem if users used some custom
comment character. Probably negligible. Concerning the second if statement:
Apparently, there was some feature along the lines of "domain/hostname". This
is not documented at all and can be removed. We can create a separate JIRA for
that.
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