Github user davies commented on a diff in the pull request:
https://github.com/apache/spark/pull/13065#discussion_r87040958
--- Diff:
sql/core/src/test/scala/org/apache/spark/sql/execution/benchmark/MiscBenchmark.scala
---
@@ -124,12 +124,124 @@ class MiscBenchmark extends BenchmarkBase {
}
benchmark.run()
- /**
+ /*
model name : Westmere E56xx/L56xx/X56xx (Nehalem-C)
collect limit: Best/Avg Time(ms) Rate(M/s)
Per Row(ns) Relative
-------------------------------------------------------------------------------------------
collect limit 1 million 833 / 1284 1.3
794.4 1.0X
collect limit 2 millions 3348 / 4005 0.3
3193.3 0.2X
*/
}
+
+ ignore("generate explode") {
+ val N = 1 << 24
+ runBenchmark("generate explode array", N) {
+ val df = sparkSession.range(N).selectExpr(
+ "id as key",
+ "array(rand(), rand(), rand(), rand(), rand()) as values")
+ df.selectExpr("key", "explode(values) value").count()
+ }
+
+ /*
+ Java HotSpot(TM) 64-Bit Server VM 1.8.0_92-b14 on Mac OS X 10.11.6
+ Intel(R) Core(TM) i7-4980HQ CPU @ 2.80GHz
+
+ generate explode array: Best/Avg Time(ms)
Rate(M/s) Per Row(ns) Relative
+
------------------------------------------------------------------------------------------------
+ generate explode array wholestage off 6920 / 7129 2.4
412.5 1.0X
+ generate explode array wholestage on 623 / 646 26.9
37.1 11.1X
--- End diff --
Could you post the result before and after this patch? so we can know
what's the improvement come from this patch.
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
