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Date: Tue, 15 Mar 2016 04:43:33 +0000 (UTC)
From: "Qian Xu (JIRA)" <jira@apache.org>
To: dev@arrow.apache.org
Message-ID: <JIRA.12950159.1458010830000.16859.1458017013470@Atlassian.JIRA>
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 <JIRA.12950159.1458010830435@arcas>
Subject: [jira] [Comment Edited] (ARROW-66) Maybe some missing steps in
 installation guide
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    [ https://issues.apache.org/jira/browse/ARROW-66?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15194721#comment-15194721 ] 

Qian Xu edited comment on ARROW-66 at 3/15/16 4:43 AM:
-------------------------------------------------------

[~wesmckinn] Yes. I installed pyarrow after libarrow.so is generated. I set {{ARROW_HOME=/usr/local}} not {{$HOME/local}}. 

Now I have tried another two approaches:
1. Exactly follow the instruction with {{ARROW_HOME=$HOME/local}}. 
2. Install Anaconda2 into my current user home and then try approach 1.
Both approaches have the same error message.

I believe the error comes from
{code}
from pyarrow.includes.libarrow cimport *
{code}
I'm not familiar with cython, is there anything I have missed?


was (Author: stanleyxu2005):
[~wesmckinn] Yes. I installed pyarrow after libarrow.so is generated. I set {{ARROW_HOME=/usr/local}} not {{$HOME/local}}. 

Now I have tried another two approaches:
1. Exactly follow the instruction with {{ARROW_HOME=$HOME/local}}. 
2. Install Anaconda2 into my current user home and then try approach 1.
Both approaches have the same error message.


> Maybe some missing steps in installation guide 
> -----------------------------------------------
>
>                 Key: ARROW-66
>                 URL: https://issues.apache.org/jira/browse/ARROW-66
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: Python
>         Environment: CentOS 7.0; Python 2.7.x
>            Reporter: Qian Xu
>              Labels: documentation
>
> I followed [the guide|https://github.com/apache/arrow/blob/master/python/doc/INSTALL.md] to install Arrow project from scratch. I met some issues.
> 1. First of all, I need to build the cpp part. So I setup the thirdparty dependencies. But when I {{cmake -DCMAKE_INSTALL_PREFIX=$ARROW_HOME ..}}, it shows an error at {{get_filename_component}} with {{FindGTest.cmake}}. After some digging, I noticed that I have to use *cmake 3* (instead of cmake 2).
> 2. Now I am able to install {{pyarrow}}. The installation went smooth. But when I import the module {{pyarrow}}, it says {{ImportError: No module named array}}. I haven't found any description on this error. 


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