beliefer commented on a change in pull request #28081: [SPARK-31315][SQL][TEST]
SQLQueryTestSuite: Display the total compile time for generated java code
URL: https://github.com/apache/spark/pull/28081#discussion_r401313895
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File path: sql/core/src/test/scala/org/apache/spark/sql/SQLQueryTestSuite.scala
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@@ -667,6 +669,13 @@ class SQLQueryTestSuite extends QueryTest with
SharedSparkSession {
// For debugging dump some statistics about how much time was spent in
various optimizer rules
logWarning(RuleExecutor.dumpTimeSpent())
+
+ val codegenInfo =
+ s"""
+ |=== Metrics of Whole Codegen ===
+ |Total compile time: ${CodeGenerator.compileTime.sum.toDouble /
NANOS_PER_SECOND} seconds
Review comment:
At first, I wanted to use` CodegenMetrics.METRIC_COMPILATION_TIME` to do
this. After many experiments, I found that
`CodegenMetrics.METRIC_COMPILATION_TIME` is only effective for a single test
case, and cannot play a role in the whole life cycle of `SQLQueryTestSuite`.
I checked the type of ` CodegenMetrics.METRIC_COMPILATION_TIME` is
`Histogram` and the it only preserves 1028 elements.
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