Github user kconor commented on the pull request:
https://github.com/apache/spark/pull/6794#issuecomment-113395998
@JoshRosen and @davies, The other three locations don't look like bugs. In
shuffle.py, /= is frequently going to be floating point division in python 2
because batch is multiplied by 1.5 when it's not divided by 2. In rdd.py, I
could update it, but I don't think it will meaningfully change the behavior of
the method. Those fixes would also miss all the locations where integer
division is done without an equals sign (and run into the issue same issue of
whether or not it's integer division depends on the types of the inputs...)
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