Github user mateiz commented on the pull request:
https://github.com/apache/spark/pull/97#issuecomment-37777193
Hey, sorry for the late reply -- if these were only added in 2.7.4, we
shouldn't use them, since lots of people are still on Python 2.6. In that case
I suggest implementing our own heap. The algorithm isn't that hard to code and
it will be clearer than if we copy some existing implementation.
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