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https://issues.apache.org/jira/browse/ARROW-4802?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Micah Kornfield updated ARROW-4802:
-----------------------------------
    Summary: [Python] Hadoop classpath discovery broken HADOOP_HOME is a 
symlink  (was: [Python] Hadoop classpath discovery broken in 0.12 when 
HADOOP_HOME is a symlin)

> [Python] Hadoop classpath discovery broken HADOOP_HOME is a symlink
> -------------------------------------------------------------------
>
>                 Key: ARROW-4802
>                 URL: https://issues.apache.org/jira/browse/ARROW-4802
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: Python
>            Reporter: Micah Kornfield
>            Priority: Major
>
> From [https://github.com/apache/arrow/issues/3748]:
> CLASSPATH discovery was recently changed in 
> [{{d911850}}|https://github.com/apache/arrow/commit/d91185000945cec96abad41a230d05d3cdefff93]
>  to resolve ARROW-2113 and ARROW-3768.
> Specifically, the logic used to find all jars under HADOOP_HOME uses the find 
> command directly
> [arrow/python/pyarrow/hdfs.py|https://github.com/apache/arrow/blob/d91185000945cec96abad41a230d05d3cdefff93/python/pyarrow/hdfs.py#L144]
> Line 144 in 
> [d911850|https://github.com/apache/arrow/commit/d91185000945cec96abad41a230d05d3cdefff93]
> | |find_args = ('find', os.environ['HADOOP_HOME'], '-name', '*.jar')|
> This will not work when HADOOP_HOME is a symlink, in which case '-L' needs to 
> be passed to the find command.
> CLASSPATH can still be set explicitly, but this is a change in behavior as 
> HADOOP_HOME symlinks worked without issue before.



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