LuciferYang commented on code in PR #50494:
URL: https://github.com/apache/spark/pull/50494#discussion_r2028512692
##########
sql/core/src/test/scala/org/apache/spark/sql/DatasetOptimizationSuite.scala:
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@@ -45,9 +46,9 @@ class DatasetOptimizationSuite extends QueryTest with
SharedSparkSession {
// serializers. The first `structFields` is aligned with first serializer
and ditto
// for other `structFields`.
private def testSerializer(df: DataFrame, structFields: Seq[Seq[String]]*):
Unit = {
- val serializer = df.queryExecution.optimizedPlan.collect {
+ val serializer = df.queryExecution.optimizedPlan.collectFirst {
case s: SerializeFromObject => s
- }.head
+ }.get
Review Comment:
Just like in the previous case, I suggest changing it to
```
val serializerOpt = df.queryExecution.optimizedPlan.collectFirst {
case s: SerializeFromObject => s
}
assert(serializerOpt.isDefined)
val serializer = serializerOpt.get
```
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