cloud-fan commented on a change in pull request #32084:
URL: https://github.com/apache/spark/pull/32084#discussion_r718092179
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File path:
sql/core/src/test/scala/org/apache/spark/sql/execution/adaptive/AdaptiveQueryExecSuite.scala
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@@ -1705,6 +1705,89 @@ class AdaptiveQueryExecSuite
}
}
+ test("SPARK-34980: Support coalesce partition through union") {
+ def checkResultPartition(
+ df: Dataset[Row],
+ numUnion: Int,
+ numShuffleReader: Int,
+ numPartition: Int): Unit = {
+ df.collect()
+ assert(collect(df.queryExecution.executedPlan) {
+ case u: UnionExec => u
+ }.size == numUnion)
+ assert(collect(df.queryExecution.executedPlan) {
+ case r: AQEShuffleReadExec => r
+ }.size === numShuffleReader)
+ assert(df.rdd.partitions.length === numPartition)
+ }
+
+ Seq(true, false).foreach { combineUnionEnabled =>
+ val combineUnionConfig = if (combineUnionEnabled) {
+ "" -> ""
Review comment:
this will set a config whose key is an empty string. I think it's safer
to do `SQLConf.OPTIMIZER_EXCLUDED_RULES.key -> ""`
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