Slightly tangential, but I'd like to shamelessly plug my HDFS client library (with nice Python bindings)[0].
If you want to access files on HDFS from your Python tasks outside of your typical map / shuffle inputs from the streaming API, it might be handy? It doesn't go through the JVM (the library is in C), so it might save a little latency for short Python tasks.
[0]: https://github.com/cemeyer/hadoofus
Also, I'm pretty new to publishing my own open source libraries. If people would be so kind, I'd love some constructive criticism. Thanks HN!