[sumeeta]

mrjob doesn’t contain any Cython. The author was just stating it was a challenge getting Yelp’s codebase (which contains some Cython) running on EMR.

[FraaJad]

I understood that from the article. But, in the light of recent discussion on Cython, i though it was interesting to note a "2.0" company like yelp using Cython.