DOC: rpy2 examples started failing

[jorisvandenbossche]

The rpy2 examples in the documentation started failing recently (http://pandas-docs.github.io/pandas-docs-travis/r_interface.html) with:

In [1]: from rpy2.robjects import r, pandas2ri
---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
<ipython-input-1-79b90b86f23f> in <module>()
----> 1 from rpy2.robjects import r, pandas2ri

~/miniconda3/envs/pandas/lib/python3.6/site-packages/rpy2/robjects/__init__.py in <module>()
     14 import itertools
     15 from datetime import datetime
---> 16 import rpy2.rinterface as rinterface
     17 import rpy2.rlike.container as rlc
     18 

~/miniconda3/envs/pandas/lib/python3.6/site-packages/rpy2/rinterface/__init__.py in <module>()
     48 del(os)
     49 
---> 50 from rpy2.rinterface._rinterface import (baseenv,
     51                                          emptyenv,
     52                                          endr,

ImportError: dlopen: cannot load any more object with static TLS

However, I don't see any change in version between a recent working build and the current failing (this working one uses rpy2 2.9.1-py36mro343h14c3975_0, and this failing one 2.9.1-py36mro343h14c3975_0, so the same)

Could this be caused by installing another library?

cc @lgautier

[WillAyd]

Hmm this has been inconsistent right? Googling the error I saw a few other issues for other projects but none seemed to have a definite resolution. Here's something similar from Tensorflow:

tensorflow/models#523

A lot of the answers seemed to be doing things that "fixed" the issue without any explanation (ex: changing import order) or just restarting the system...

[jorisvandenbossche]

I think is has been rather consistently failing since some time.
But indeed, I also googled and only found such not very helpful issues as you describe ..

[TomAugspurger]

Reproduced locally from docker's base image.

Haven't narrowed things down yet. Pushing to the next release.