Investigate user environment setup

[ckadner]

We need to make sure kernels come up in a well-defined environment that is sufficiently isolated from that of other users. Considerations should include the user's home folder in HDFS or GPF and data persistence across kernel sessions.

Environments could be isolated on a ...

• kernel by kernel basis
• user by user basis
• be "fresh" each time a kernel gets launched

For Python kernels the mechanism to use could be virtualenv or Anaconda.

For Java/Scala kernels, the submitted jar files constitute the runtime environment

For R kernels it could be Renv or Packrat.

[lresende]

Possibly related: https://www.continuum.io/blog/developer-blog/self-service-open-data-science-custom-anaconda-management-packs-hortonworks-hdp