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https://issues.apache.org/jira/browse/SPARK-57354?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18087761#comment-18087761
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Calvin Qin commented on SPARK-57354:
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https://github.com/apache/spark/pull/56374
> Add data source option to list hidden files
> -------------------------------------------
>
> Key: SPARK-57354
> URL: https://issues.apache.org/jira/browse/SPARK-57354
> Project: Spark
> Issue Type: New Feature
> Components: Spark Core
> Affects Versions: 4.2.0
> Reporter: Calvin Qin
> Priority: Major
>
> Spark's file-based data sources skip hidden files and directories (names who
> start with `_` or `.` (and files ending in `._COPYING_`) during file listing
> and partition discovery. This filter is always on, with no way to override
> it.
> This adds a way to opt out of the filter, with a per-read data source option
> `listHiddenFiles` and a session config `spark.sql.files.listHiddenFiles`
> (default false)
> When true, hidden files and directories are listed. False maintains default
> behavior. The per-read option takes precedent over the session config.
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