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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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Francois Saint-Jacques reassigned ARROW-8058:
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Assignee: Francois Saint-Jacques
> [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
> Fix For: 1.0.0
>
>
> 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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