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https://issues.apache.org/jira/browse/SPARK-23846?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16422579#comment-16422579
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Apache Spark commented on SPARK-23846:
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User 'MaxGekk' has created a pull request for this issue:
https://github.com/apache/spark/pull/20959
> samplingRatio for schema inferring of CSV datasource
> ----------------------------------------------------
>
> Key: SPARK-23846
> URL: https://issues.apache.org/jira/browse/SPARK-23846
> Project: Spark
> Issue Type: New Feature
> Components: SQL
> Affects Versions: 2.3.0
> Reporter: Maxim Gekk
> Priority: Major
>
> The JSON datasource has the option - `samplingRatio` which allows to reduce
> amount of data loaded for schema inferring. It would be useful having the
> same for CSV datasource.
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