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https://issues.apache.org/jira/browse/SPARK-16462?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15369103#comment-15369103
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Apache Spark commented on SPARK-16462:
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User 'lw-lin' has created a pull request for this issue:
https://github.com/apache/spark/pull/14118
> Spark 2.0 CSV does not cast null values to certain data types properly
> ----------------------------------------------------------------------
>
> Key: SPARK-16462
> URL: https://issues.apache.org/jira/browse/SPARK-16462
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.0.0
> Reporter: Liwei Lin
>
> When casting given string datum to specified type, CSV should return {{null}}
> for nullable types if {{datum == options.nullValue}}.
> However, for certain data types like {{Boolean}}, {{TimestampType}},
> {{DateType}}, CSV in 2.0 does not return {{null}} for some "empty" datum.
> This is a regression comparing to 1.6.
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