Tika in Python Azure Function
So this isnt possible at this time. To solve it, I abstracted out the tika code into a Java Function app and used that instead.
I'm trying to create a function on Azure Function Apps that is given back a PDF and uses the python tika library to parse it.
This setup works fine locally, and I have the python function set up in Azure as well, however I cannot figure out how to include Java in the environment? 
At the moment, when I try to run the code on the server I get the error message 

Unable to run java; is it installed?
  Failed to receive startup confirmation from startServer.