title: PyMC3/Edward/Pyro on Spark?
body: <p>Has anyone tried using a python probabilistic programming library with Spark? Or does anyone have a good idea of what it would take? </p>
  
  <p>I have a feeling Edward would be simplest because there are already tools connecting Tensorflow and Spark, but still hazy about what low-level code changes would be required.</p>
  
  <p>I know distributed MCMC is still an area of active research (see <a href="https://stackoverflow.com/questions/36498491/mc-stan-on-spark">MC-Stan on Spark?</a>), so is this even reasonable to implement? Thanks!</p>