Fedora 30: ImportError: libnsl.so.1 when importing apache_beam in Python 3

[damccorm]

When importing apache_beam in python, it fails because it can't find libnsl.so.1.

It is fixed by running 'dnf install libnsl'.  This appears to be a dependency of Apache Arrow.

 

output:

Singularity tfx:~/tfx_image_example_gen> python
Python 3.6.9 |Anaconda, Inc.| (default, Jul 30 2019, 19:07:31)
[GCC 7.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import apache_beam
/opt/snps/envs/tfx/lib/python3.6/site-packages/apache_beam/__init__.py:84: UserWarning: Some syntactic constructs of Python 3 are not yet fully supported by Apache Beam.
'Some syntactic constructs of Python 3 are not yet fully supported by '
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/opt/snps/envs/tfx/lib/python3.6/site-packages/apache_beam/__init__.py", line 98, in <module>
from apache_beam import io
File "/opt/snps/envs/tfx/lib/python3.6/site-packages/apache_beam/io/__init__.py", line 29, in <module>
from apache_beam.io.parquetio import *
File "/opt/snps/envs/tfx/lib/python3.6/site-packages/apache_beam/io/parquetio.py", line 45, in <module>
import pyarrow as pa
File "/opt/snps/envs/tfx/lib/python3.6/site-packages/pyarrow/__init__.py", line 49, in <module>
from pyarrow.lib import cpu_count, set_cpu_count
ImportError: libnsl.so.1: cannot open shared object file: No such file or directory

Imported from Jira BEAM-8110. Original Jira may contain additional context.
Reported by: robert.lugg.