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https://issues.apache.org/jira/browse/SPARK-48718?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Wenchen Fan resolved SPARK-48718.
---------------------------------
Fix Version/s: 4.0.0
Assignee: Xinyi Yu
Resolution: Fixed
> Got incastable error when deserializer in cogroup is resolved during
> application of DeduplicateRelation rule
> ------------------------------------------------------------------------------------------------------------
>
> Key: SPARK-48718
> URL: https://issues.apache.org/jira/browse/SPARK-48718
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 4.0.0
> Reporter: Xinyi Yu
> Assignee: Xinyi Yu
> Priority: Major
> Fix For: 4.0.0
>
>
> When running the following commands:
>
>
> {code:java}
> val lhs = spark.createDataFrame(
> List(Row(123L)).asJava,
> StructType(Seq(StructField("GROUPING_KEY", LongType)))
> )
> val rhs = spark.createDataFrame(
> List(Row(0L, 123L)).asJava,
> StructType(Seq(StructField("ID", LongType), StructField("GROUPING_KEY",
> LongType)))
> ) val lhsKV = lhs.groupByKey((r: Row) => r.getAs[Long]("GROUPING_KEY"))
> val rhsKV = rhs.groupByKey((r: Row) => r.getAs[Long]("GROUPING_KEY"))
> val cogrouped = lhsKV.cogroup(rhsKV)(
> (a: Long, b: Iterator[Row], c: Iterator[Row]) => Iterator(0L)
> )
> val joined = rhs.join(cogrouped, col("ID") === col("value"), "left")
> {code}
>
>
> It gets an error:
> {code:java}
> java.lang.ClassCastException:
> org.apache.spark.sql.catalyst.expressions.objects.AssertNotNull cannot be
> cast to org.apache.spark.sql.catalyst.analysis.UnresolvedDeserializer {code}
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