[jira] [Assigned] (ARROW-7061) [C++][Dataset] FileSystemDiscovery with ParquetFileFormat should ignore files that aren't Parquet

["Francois Saint-Jacques (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-7061?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Francois Saint-Jacques reassigned ARROW-7061:
---------------------------------------------

    Assignee: Francois Saint-Jacques

> [C++][Dataset] FileSystemDiscovery with ParquetFileFormat should ignore files that aren't Parquet
> -------------------------------------------------------------------------------------------------
>
>                 Key: ARROW-7061
>                 URL: https://issues.apache.org/jira/browse/ARROW-7061
>             Project: Apache Arrow
>          Issue Type: New Feature
>          Components: C++ - Dataset
>            Reporter: Neal Richardson
>            Assignee: Francois Saint-Jacques
>            Priority: Major
>
> I got {{Invalid parquet file. Corrupt footer.}} trying to read real data. Turned out it was because I had opened the directory in macOS Finder and it had added the junk .DS_Store files. Once I deleted them, the Dataset created fine. 
> If we're creating a DataSource with Parquet files, we should ignore any non-Parquet files we encounter when scanning.



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