# Issue might happen import PyArrow

Depending on your Linux OS, especially with Ubuntu, you might run into issue like, when you installed pyarrow by conda install

```
>>> import pyarrow
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/dv6/anaconda3/envs/spark/lib/python3.6/site-packages/pyarrow/__init__.py", line 54, in <module>
    from pyarrow.lib import cpu_count, set_cpu_count
ImportError: /home/dv6/anaconda3/envs/spark/lib/python3.6/site-packages/pyarrow/lib.cpython-36m-x86_64-linux-gnu.so: undefined symbol: _ZNK5arrow5F....                                                                             B5cxx11Ev
>>> quit()
(spark) dv6@dv6:~$ conda uninstall pyarrow
Collecting package metadata (repodata.json): done
Solving environment: done

```

I have avoided the issue with pip install pyarrow --user, after conda uninstall

```
(spark) dv6@dv6:~$ conda uninstall pyarrow
Collecting package metadata (repodata.json): done
Solving environment: done


==> WARNING: A newer version of conda exists. <==
  current version: 4.8.2
  latest version: 4.8.3

Please update conda by running

    $ conda update -n base -c defaults conda



## Package Plan ##

  environment location: /home/dv6/anaconda3/envs/spark

  removed specs:
    - pyarrow


The following packages will be REMOVED:

  pyarrow-0.11.1-py36hbbcf98d_1002
  python_abi-3.6-1_cp36m

The following packages will be SUPERSEDED by a higher-priority channel:

  ca-certificates    conda-forge::ca-certificates-2020.4.5~ --> pkgs/main::ca-ce                                                                             rtificates-2020.1.1-0
  certifi            conda-forge::certifi-2020.4.5.1-py36h~ --> pkgs/main::certi                                                                             fi-2020.4.5.1-py36_0
  openssl            conda-forge::openssl-1.1.1f-h516909a_0 --> pkgs/main::opens                                                                             sl-1.1.1f-h7b6447c_0


Proceed ([y]/n)? y

Preparing transaction: done
Verifying transaction: done
Executing transaction: done
(spark) dv6@dv6:~$ pip install pyarrow --user
Collecting pyarrow
  Downloading pyarrow-0.16.0-cp36-cp36m-manylinux2014_x86_64.whl (63.1 MB)
     |████████████████████████████████| 63.1 MB 25 kB/s
Requirement already satisfied: numpy>=1.14 in ./anaconda3/envs/spark/lib/python3                                                                             .6/site-packages (from pyarrow) (1.18.1)
Requirement already satisfied: six>=1.0.0 in ./anaconda3/envs/spark/lib/python3.                                                                             6/site-packages (from pyarrow) (1.14.0)
Installing collected packages: pyarrow
Successfully installed pyarrow-0.16.0
(spark) dv6@dv6:~$ python -c "import pyarrow"
(spark) dv6@dv6:~$ python
Python 3.6.10 |Anaconda, Inc.| (default, Jan  7 2020, 21:14:29)
[GCC 7.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>>

```


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