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https://issues.apache.org/jira/browse/SPARK-41815?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17653748#comment-17653748
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Ruifeng Zheng commented on SPARK-41815:
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similar to the issue in `createDataFrame`
https://issues.apache.org/jira/browse/SPARK-41814
> Column.isNull returns nan instead of None
> -----------------------------------------
>
> Key: SPARK-41815
> URL: https://issues.apache.org/jira/browse/SPARK-41815
> Project: Spark
> Issue Type: Sub-task
> Components: Connect
> Affects Versions: 3.4.0
> Reporter: Hyukjin Kwon
> Priority: Major
>
> {code}
> File "/.../spark/python/pyspark/sql/connect/column.py", line 99, in
> pyspark.sql.connect.column.Column.isNull
> Failed example:
> df.filter(df.height.isNull()).collect()
> Expected:
> [Row(name='Alice', height=None)]
> Got:
> [Row(name='Alice', height=nan)]
> {code}
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