rednaxelafx commented on a change in pull request #24735: [SPARK-27871][SQL]
LambdaVariable should use per-query unique IDs instead of globally unique IDs
URL: https://github.com/apache/spark/pull/24735#discussion_r288692135
##########
File path:
sql/core/src/test/scala/org/apache/spark/sql/DatasetOptimizationSuite.scala
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@@ -166,4 +164,42 @@ class DatasetOptimizationSuite extends QueryTest with
SharedSQLContext {
checkAnswer(df, Seq(Row("1"), Row("2"), Row("3")))
}
}
+
+ test("SPARK-27871: Dataset encoder should benefit from codegen cache") {
+ def checkCodegenCache(createDataset: () => Dataset[_]): Unit = {
+ val count1 = CodegenMetrics.METRIC_COMPILATION_TIME.getCount()
Review comment:
My earlier PR that added the whole-stage codegen ID used another metric for
the same purpose:
https://github.com/apache/spark/commit/e57f394818b0a62f99609e1032fede7e981f306f#diff-0314224342bb8c30143ab784b3805d19R296
Should we try to make them use the exact same logic for checking whether or
not codegen cache was hit?
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