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fix: Fix NaN values in Spark collect_set aggregate function #12335

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fix: Fix NaN values in Spark collect_set aggregate function #12335

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@rui-mo rui-mo commented Feb 14, 2025 •
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In Spark collect_set aggregate function, NaN values are considered distinct.

spark.sql("SELECT collect_set(col) FROM VALUES (1), (1), (cast('NaN' as double)), (cast('NaN' as double)) AS tab(col)").show()
+----------------+
|collect_set(col)|
+----------------+
| [1.0, NaN, NaN]|
+----------------+

Fixes #12336.

@facebook-github-bot facebook-github-bot added the CLA Signed This label is managed by the Facebook bot. Authors need to sign the CLA before a PR can be reviewed. label Feb 14, 2025
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zhli1142015
zhli1142015 approved these changes Feb 15, 2025
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LGTM

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@zhli1142015 zhli1142015 zhli1142015 approved these changes

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Unexpected result in the Spark collect_set aggregate function
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