[jira] [Commented] (ARROW-3048) Import pyarrow fails if scikit-learn is installed from conda

["Uwe L. Korn (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ARROW-3048?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16582326#comment-16582326 ] 

Uwe L. Korn commented on ARROW-3048:
------------------------------------

This is because boost-cpp from defaults is installed. Please only use C++ packages only from defaults or conda-forge, don't mix the two repositorities.

> Import pyarrow fails if scikit-learn is installed from conda
> ------------------------------------------------------------
>
>                 Key: ARROW-3048
>                 URL: https://issues.apache.org/jira/browse/ARROW-3048
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: Python
>    Affects Versions: 0.10.0
>         Environment: Ubuntu 16.04
>            Reporter: Jarno Seppanen
>            Priority: Major
>
> Hi, installing both pyarrow 0.10.0 and scikit-learn 0.19.2 causes pyarrow import to break.
> Steps to reproduce
>  # cat >environment.yml <<EOF
> {code:java}
> name: asdf
> channels:
> - defaults
> - conda-forge
> dependencies:
> - python=3.6
> - pyarrow=0.10.0
> - scikit-learn=0.19.2{code}
> EOF
>  # conda env create
>  # source activate asdf
>  # python -c 'import pyarrow'
> {code:java}
> Traceback (most recent call last):
> File "<string>", line 1, in <module>
> File "/home/jarno/miniconda3/envs/asdf/lib/python3.6/site-packages/pyarrow/__init__.py", line 60, in <module>
> from pyarrow.lib import cpu_count, set_cpu_count
> ImportError: /home/jarno/miniconda3/envs/asdf/lib/python3.6/site-packages/pyarrow/../../../libparquet.so.1: undefined symbol: _ZN5boost13match_resultsIN9__gnu_cxx17__normal_iteratorIPKcSsEESaINS_9sub_matchIS5_EEEE12maybe_assignERKS9_{code}



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