Github user HyukjinKwon commented on the issue:
https://github.com/apache/spark/pull/21537
I don't see a notable risk here. That's just to avoid string interpolation,
which makes less error-prone, which is discussed already and the code change is
small.
I hope we can move other discussions to other threads like JIRA or mailing
list so that people can see. It's quite difficult to find such discussion to me
actually.
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