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

["David Li (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-6248?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

David Li resolved ARROW-6248.
-----------------------------
    Resolution: Fixed

Issue resolved by pull request 9949
[https://github.com/apache/arrow/pull/9949]

> [Python] Use FileNotFoundError in HadoopFileSystem.open() in Python 3 
> ----------------------------------------------------------------------
>
>                 Key: ARROW-6248
>                 URL: https://issues.apache.org/jira/browse/ARROW-6248
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: Python
>    Affects Versions: 0.14.1
>            Reporter: Alexander Schepanovski
>            Assignee: Antoine Pitrou
>            Priority: Minor
>              Labels: pull-request-available
>             Fix For: 4.0.0
>
>          Time Spent: 1h 10m
>  Remaining Estimate: 0h
>
> When file is absent pyarrow throws 
> {code:python}
> ArrowIOError('HDFS file does not exist: ...')
> {code}
> 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.



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