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https://issues.apache.org/jira/browse/SPARK-25241?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16608216#comment-16608216
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Apache Spark commented on SPARK-25241:
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User 'MaxGekk' has created a pull request for this issue:
https://github.com/apache/spark/pull/22367
> Configurable empty values when reading/writing CSV files
> --------------------------------------------------------
>
> Key: SPARK-25241
> URL: https://issues.apache.org/jira/browse/SPARK-25241
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 2.3.1, 2.4.0
> Reporter: Mario Molina
> Priority: Minor
>
> There is an option in the CSV parser to set values when we have empty values
> in the CSV files or in our dataframes.
> Currently, this option cannot be configured and always sets a default value
> (empty string for reading and `""` for writing).
> I think it'd be interesting to enable this option in the CSV reader/writer to
> allow customizing these empty values.
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