Github user kiszk commented on a diff in the pull request: https://github.com/apache/spark/pull/20779#discussion_r173613316 --- Diff: sql/core/src/test/scala/org/apache/spark/sql/execution/WholeStageCodegenSuite.scala --- @@ -307,4 +309,47 @@ class WholeStageCodegenSuite extends QueryTest with SharedSQLContext { // a different query can result in codegen cache miss, that's by design } } + + test("SPARK-23598: Avoid compilation error with a lot of aggregation operations") { + withSQLConf(SQLConf.SHUFFLE_PARTITIONS.key -> "1") { + val df = Seq((8, "bat"), (15, "mouse"), (5, "horse")).toDF("age", "name") + .groupBy("name").agg(avg("age").alias("age")).groupBy("name").agg(avg("age").alias("age")) --- End diff -- I tried it, but failed.
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