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Qian Xu edited comment on ARROW-66 at 3/15/16 3:41 AM: ------------------------------------------------------- [~danrobinson...@gmail.com] Thanks for the tip. I have tried to install the master branch code with the following steps: {code} [qxu@localhost dev-build]$ export ARROW_HOME=/usr/local [qxu@localhost dev-build]$ cmake .. -DCMAKE_INSTALL_PREFIX=/usr/local [qxu@localhost dev-build]$ make [qxu@localhost dev-build]$ sudo make install {code} It moves forward. Now the error message is {code} [qxu@localhost dev-build]$ python Python 2.7.5 (default, Nov 20 2015, 02:00:19) [GCC 4.8.5 20150623 (Red Hat 4.8.5-4)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import pyarrow Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/lib64/python2.7/site-packages/pyarrow-0.1.0dev-py2.7-linux-x86_64.egg/pyarrow/__init__.py", line 20, in <module> from pyarrow.array import (Array, from_pylist, total_allocated_bytes, ImportError: libarrow.so: cannot open shared object file: No such file or directory {code} Where does Python looks {{libarrow.so}} for? was (Author: stanleyxu2005): [~danrobinson...@gmail.com] Thanks for the tip. I have tried to install the master branch code with the following steps: {code} [qxu@localhost dev-build]$ export ARROW_HOME=/usr/local [qxu@localhost dev-build]$ cmake .. -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/usr/local [qxu@localhost dev-build]$ make [qxu@localhost dev-build]$ sudo make install {code} It moves forward. Now the error message is {code} [qxu@localhost dev-build]$ python Python 2.7.5 (default, Nov 20 2015, 02:00:19) [GCC 4.8.5 20150623 (Red Hat 4.8.5-4)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import pyarrow Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/lib64/python2.7/site-packages/pyarrow-0.1.0dev-py2.7-linux-x86_64.egg/pyarrow/__init__.py", line 20, in <module> from pyarrow.array import (Array, from_pylist, total_allocated_bytes, ImportError: libarrow.so: cannot open shared object file: No such file or directory {code} Where does Python looks {{libarrow.so}} for? > 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. -- This message was sent by Atlassian JIRA (v6.3.4#6332)