Maxim Gekk created SPARK-31553:
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Summary: Wrong result of isInCollection for large collections
Key: SPARK-31553
URL: https://issues.apache.org/jira/browse/SPARK-31553
Project: Spark
Issue Type: Bug
Components: SQL
Affects Versions: 3.0.0, 3.1.0
Reporter: Maxim Gekk
If the size of a collection passed to isInCollection is bigger than
spark.sql.optimizer.inSetConversionThreshold, the method can return wrong
results for some inputs. For example:
{code:scala}
val set = (0 to 20).map(_.toString).toSet
val data = Seq("1").toDF("x")
println(set.contains("1"))
data.select($"x".isInCollection(set).as("isInCollection")).show()
{code}
{code}
true
+--------------+
|isInCollection|
+--------------+
| false|
+--------------+
{code}
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