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https://issues.apache.org/jira/browse/ARROW-8163?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17635972#comment-17635972
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Apache Arrow JIRA Bot commented on ARROW-8163:
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This issue was last updated over 90 days ago, which may be an indication it is
no longer being actively worked. To better reflect the current state, the issue
is being unassigned per [project
policy|https://arrow.apache.org/docs/dev/developers/bug_reports.html#issue-assignment].
Please feel free to re-take assignment of the issue if it is being actively
worked, or if you plan to start that work soon.
> [C++][Dataset] Allow FileSystemDataset's file list to be lazy
> -------------------------------------------------------------
>
> Key: ARROW-8163
> URL: https://issues.apache.org/jira/browse/ARROW-8163
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++
> Affects Versions: 0.16.0
> Reporter: Ben Kietzman
> Assignee: Pavel Solodovnikov
> Priority: Major
> Labels: dataset
>
> A FileSystemDataset currently requires a full listing of files it contains on
> construction, so a scan cannot start until all files in the dataset are
> discovered. Instead it would be ideal if a large dataset could be constructed
> with a lazy file listing so that scans can start immediately.
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