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https://issues.apache.org/jira/browse/SPARK-41814?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17653736#comment-17653736
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Ruifeng Zheng commented on SPARK-41814:
---------------------------------------
this issue is due to:
1, the conversion from rows to pd.DataFrame, which automatically convert null
to NaN
2, then the conversion from pd.DataFrame to pa.Table, which convert NaN to null
> Column.eqNullSafe fails on NaN comparison
> -----------------------------------------
>
> Key: SPARK-41814
> URL: https://issues.apache.org/jira/browse/SPARK-41814
> 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 115, in
> pyspark.sql.connect.column.Column.eqNullSafe
> Failed example:
> df2.select(
> df2['value'].eqNullSafe(None),
> df2['value'].eqNullSafe(float('NaN')),
> df2['value'].eqNullSafe(42.0)
> ).show()
> Expected:
> +----------------+---------------+----------------+
> |(value <=> NULL)|(value <=> NaN)|(value <=> 42.0)|
> +----------------+---------------+----------------+
> | false| true| false|
> | false| false| true|
> | true| false| false|
> +----------------+---------------+----------------+
> Got:
> +----------------+---------------+----------------+
> |(value <=> NULL)|(value <=> NaN)|(value <=> 42.0)|
> +----------------+---------------+----------------+
> | true| false| false|
> | false| false| true|
> | true| false| false|
> +----------------+---------------+----------------+
> {code}
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