maropu commented on a change in pull request #25274: [SPARK-28537][SQL]
DebugExec cannot debug broadcast or columnar related queries.
URL: https://github.com/apache/spark/pull/25274#discussion_r307981077
##########
File path:
sql/core/src/test/scala/org/apache/spark/sql/execution/debug/DebuggingSuite.scala
##########
@@ -48,4 +50,25 @@ class DebuggingSuite extends SparkFunSuite with
SharedSQLContext {
assert(res.forall{ case (subtree, code) =>
subtree.contains("Range") && code.contains("Object[]")})
}
+
+ test("debug() or broadcast and columnar") {
+ val rightDF = spark.range(10)
+ val leftDF = spark.range(10)
+ val joinedDF = leftDF.join(rightDF, leftDF("id") === rightDF("id"))
+ Try {
Review comment:
How about checking the actual output like this?
```
assert(joinedDF.queryExecution.sparkPlan.collect { case _:
BroadcastHashJoinExec => true }.nonEmpty)
val output = new java.io.ByteArrayOutputStream()
Console.withOut(output) {
joinedDF.debug()
}
assert(output.toString.contains("BroadcastHashJoin"))
```
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