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https://issues.apache.org/jira/browse/SPARK-24007?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xiao Li resolved SPARK-24007.
-----------------------------
Resolution: Fixed
Fix Version/s: 2.4.0
2.3.1
2.2.2
> EqualNullSafe for FloatType and DoubleType might generate a wrong result by
> codegen.
> ------------------------------------------------------------------------------------
>
> Key: SPARK-24007
> URL: https://issues.apache.org/jira/browse/SPARK-24007
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.0.2, 2.1.2, 2.2.1, 2.3.0
> Reporter: Takuya Ueshin
> Assignee: Takuya Ueshin
> Priority: Major
> Labels: correctness
> Fix For: 2.2.2, 2.3.1, 2.4.0
>
>
> {{EqualNullSafe}} for {{FloatType}} and {{DoubleType}} might generate a wrong
> result by codegen.
> {noformat}
> scala> val df = Seq((Some(-1.0d), None), (None, Some(-1.0d))).toDF()
> df: org.apache.spark.sql.DataFrame = [_1: double, _2: double]
> scala> df.show()
> +----+----+
> | _1| _2|
> +----+----+
> |-1.0|null|
> |null|-1.0|
> +----+----+
> scala> df.filter("_1 <=> _2").show()
> +----+----+
> | _1| _2|
> +----+----+
> |-1.0|null|
> |null|-1.0|
> +----+----+
> {noformat}
> The result should be empty but the result remains two rows.
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