andygrove commented on code in PR #931:
URL: https://github.com/apache/datafusion-comet/pull/931#discussion_r1752490805
##########
spark/src/test/scala/org/apache/comet/exec/CometExecSuite.scala:
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@@ -1650,6 +1650,16 @@ class CometExecSuite extends CometTestBase {
spark.catalog.cacheTable("abc")
val df = spark.sql("SELECT * FROM abc").groupBy("key").count()
checkSparkAnswerAndOperator(df, includeClasses =
Seq(classOf[CometSparkToColumnarExec]))
+ df.collect()
Review Comment:
nit: it would be good to add a comment explaining why we need this call to
collect
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