HyukjinKwon commented on a change in pull request #30476:
URL: https://github.com/apache/spark/pull/30476#discussion_r529105230
##########
File path:
sql/core/src/test/scala/org/apache/spark/sql/execution/SubExprEliminationBenchmark.scala
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@@ -108,11 +110,81 @@ object SubExprEliminationBenchmark extends
SqlBasedBenchmark {
}
}
+ def withFilter(rowsNum: Int, numIters: Int): Unit = {
+ val benchmark = new Benchmark("from_json as subExpr in Filter", rowsNum,
output = output)
+
+ withTempPath { path =>
+ prepareDataInfo(benchmark)
+ val numCols = 1000
+ val schema = writeWideRow(path.getAbsolutePath, rowsNum, numCols)
+
+ val predicate = (0 until numCols).map { idx =>
+ (from_json('value, schema).getField(s"col$idx") >=
Literal(100000)).expr
+ }.asInstanceOf[Seq[Expression]].reduce(Or)
+
+ // We only benchmark subexpression performance under
codegen/non-codegen, so disabling
+ // json optimization.
+ benchmark.addCase("subexpressionElimination off, codegen on", numIters)
{ _ =>
+ withSQLConf(
+ SQLConf.SUBEXPRESSION_ELIMINATION_ENABLED.key -> "false",
+ SQLConf.WHOLESTAGE_CODEGEN_ENABLED.key -> "true",
+ SQLConf.CODEGEN_FACTORY_MODE.key -> "CODEGEN_ONLY",
+ SQLConf.JSON_EXPRESSION_OPTIMIZATION.key -> "false") {
+ val df = spark.read
+ .text(path.getAbsolutePath)
+ .where(Column(predicate))
+ df.collect()
Review comment:
Can we use `write.format("noop").save()`?
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