Github user holdenk commented on the issue: https://github.com/apache/spark/pull/15659 That's a good question @rgbkrk - I think the closest is @davies but he has been pretty busy lately. I think its pretty clear that Spark is understaffed on Python maintainers - but it's sort of a hard cycle to fix given the current process for adding maintainers (although I'm optimistic that maybe some of the discussions from Cody's thread could perhaps help this). Many of the people who work in Python a lot (like myself & @HyukjinKwon ) are not maintainers. @JoshRosen has also done some Python work in the past but not a lot recently. Despite the lack of Python focused maintainers we are still often able to get some work in since the maintainers for each component will generally help out if your making a Python change related to their component (e.g. ML changes to Python are easier to have reviewed) - but since this is sort of core-Python it's a bit trickier. It's a bit of a stretch - but @srowen might be able to help with the review too since he does some reviews more related to the build - but not really Python. People that aren't maintainers but have some experience with Python can help with the review of course (e.g. @BryanCutler, @sethah, @HyukjinKwon ) - and it can be a useful signal to core maintainers who don't have the Python background - but at the end of the day we do need a maintainer/committer to sign off on this. I'm hoping @mateiz's interest from our discussion on the previous PR is still present and we can get him to do the review - but otherwise I'll keep looking for someone else who would feel comfortable merging this. (Of course the longer discussion around the lack of Python ecosystem focused maintainers for Spark is something I'd also love to move forward but I think that really depends on the PMC and they haven't had the interest in having those discussions in public so there isn't a lot I can do).
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