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https://issues.apache.org/jira/browse/ARROW-8058?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ben Kietzman resolved ARROW-8058.
---------------------------------
Resolution: Fixed
Issue resolved by pull request 6687
[https://github.com/apache/arrow/pull/6687]
> [C++][Python][Dataset] Provide an option to toggle validation and schema
> inference in FileSystemDatasetFactoryOptions
> ---------------------------------------------------------------------------------------------------------------------
>
> Key: ARROW-8058
> URL: https://issues.apache.org/jira/browse/ARROW-8058
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++ - Dataset, Python
> Affects Versions: 0.16.0
> Reporter: Ben Kietzman
> Assignee: Francois Saint-Jacques
> Priority: Major
> Labels: pull-request-available
> Fix For: 0.17.0
>
> Time Spent: 2h
> Remaining Estimate: 0h
>
> This can be costly and is not always necessary.
> At the same time we could move file validation into the scan tasks; currently
> all files are inspected as the dataset is constructed, which can be expensive
> if the filesystem is slow. We'll be performing the validation multiple times
> but the check will be cheap since at scan time we'll be reading the file into
> memory anyway.
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