Github user 10110346 commented on the issue:
https://github.com/apache/spark/pull/18156
Yes,Floating point representation is inexact .But I think if the length of
Floating point value is less than 7, it should be exact.
Evaluating 3.1415f < 3.1415, firstly, 3.1415f will be converted to
Double,this step will lead to the precision loss.
Try evaluating 3.1415f == 3.1415.toFloat. It is true.
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