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https://issues.apache.org/jira/browse/SPARK-25349?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16890623#comment-16890623
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Weichen Xu commented on SPARK-25349:
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I will work on this. Thanks!
> Support sample pushdown in Data Source V2
> -----------------------------------------
>
> Key: SPARK-25349
> URL: https://issues.apache.org/jira/browse/SPARK-25349
> Project: Spark
> Issue Type: Story
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Xiangrui Meng
> Priority: Major
>
> Support sample pushdown would help file-based data source implementation save
> I/O cost significantly if it can decide whether to read a file or not.
>
> cc: [~cloud_fan]
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