[ARROW-6248] [Python] Use FileNotFoundError in HadoopFileSystem.open() in Python 3

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 0.14.1
• Fix Version/s: 4.0.0
• Component/s: Python
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/22633
• Assignee: Antoine Pitrou
• Reporter: Alexander Schepanovski
• Created: 15/Aug/19 11:54
• Updated: 11/Jan/23 07:45
• Resolved: 12/Apr/21 21:27

Description

When file is absent pyarrow throws 

ArrowIOError('HDFS file does not exist: ...')

which inherits from IOError and pyarrow.lib.ArrowException, it would be better if that was FileNotFoundError a subclass of IOError for this particular purpose. Also, .errno property is empty (should be 2) so one needs to match by error message to check for particular error.

P.S. There is no FileNotFoundError in Python 2, but there is .errno property there.

Issue Links

• links to: GitHub Pull Request #9949