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https://issues.apache.org/jira/browse/ARROW-8283?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17128383#comment-17128383
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Francois Saint-Jacques edited comment on ARROW-8283 at 6/8/20, 3:24 PM:
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[~jorisvandenbossche] This filtering is done on the [python
side.|https://github.com/apache/arrow/blob/master/python/pyarrow/_dataset.pyx#L458-L478]
This is due to the fact that the FileSystemDataset constructor accepts a
path_or_selector. The C++ variant only accepts a vector of fragments, maybe we
should align both?
was (Author: fsaintjacques):
[~jorisvandenbossche] This filtering is done on the [python
side.|https://github.com/apache/arrow/blob/master/python/pyarrow/_dataset.pyx#L458-L478]
This is due to the fact that the FileSystemDataset constructor accepts a
path_or_selector.
> [Python][Dataset] Non-existent files are silently dropped in
> pa.dataset.FileSystemDataset
> -----------------------------------------------------------------------------------------
>
> Key: ARROW-8283
> URL: https://issues.apache.org/jira/browse/ARROW-8283
> Project: Apache Arrow
> Issue Type: Improvement
> Components: Python
> Reporter: Uwe Korn
> Priority: Critical
> Labels: dataset
> Fix For: 1.0.0
>
>
> When passing a list of files to the constructor of
> {{pyarrow.dataset.FileSystemDataset}}, all files that don't exist are
> silently dropped immediately (i.e. no fragments are created for them).
> Instead, I would expect that fragments will be created for them but an error
> is thrown when one tries to read the fragment with the non-existent file.
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