Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/21291#discussion_r188868610
--- Diff:
sql/core/src/test/scala/org/apache/spark/sql/execution/debug/DebuggingSuite.scala
---
@@ -34,14 +34,13 @@ class DebuggingSuite extends SparkFunSuite with
SharedSQLContext {
test("debugCodegen") {
val res =
codegenString(spark.range(10).groupBy("id").count().queryExecution.executedPlan)
--- End diff --
can we change to `groupBy('id * 2)`? We should try our best to keep what to
test, and keep 2 the shuffle in this query.
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