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https://issues.apache.org/jira/browse/ARROW-9748?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ben Kietzman reassigned ARROW-9748:
-----------------------------------

    Assignee: Weston Pace  (was: Ben Kietzman)

> [C++][Dataset] Remove Selector, ignore_prefixes from FileSystemDatasetFactory
> -----------------------------------------------------------------------------
>
>                 Key: ARROW-9748
>                 URL: https://issues.apache.org/jira/browse/ARROW-9748
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: C++
>    Affects Versions: 1.0.0
>            Reporter: Ben Kietzman
>            Assignee: Weston Pace
>            Priority: Major
>              Labels: dataset
>             Fix For: 3.0.0
>
>
> Currently FileSystemDatasetFactory can be constructed with an explicit 
> listing of files or with a {{fs::FileSelector}}. Since the selector does not 
> support sophisticated selection criteria, 
> {{FileSystemFactoryOptions::selector_ignore_prefixes}} to allow users to 
> exclude undesired files such as {{_metadata}} or {{.DS_STORE}}.
> The selector + ignored prefixes mechanism is inflexible with numerous edge 
> cases ( ARROW-9644 ARROW-9573 ). Furthermore, implementing more advanced file 
> selection logic in dataset discovery prevents it from being reused by other 
> consumers of the file system api.
> Remove FileSystemDatasetFactory's constructor-from-selector, optionally 
> adding that functionality directly to {{fs::FileSelector}}. An explicit 
> listing of files for use in construction of a FileSystemDatasetFactory can 
> then be assembled using an {{fs::FileSelector}} and/or other globbing 
> libraries, with arbitrary inclusion logic.



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