wangyum commented on a change in pull request #29642:
URL: https://github.com/apache/spark/pull/29642#discussion_r511606498
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/parquet/ParquetFilters.scala
##########
@@ -597,12 +599,26 @@ class ParquetFilters(
createFilterHelper(pred, canPartialPushDownConjuncts = false)
.map(FilterApi.not)
- case sources.In(name, values) if canMakeFilterOn(name, values.head)
- && values.distinct.length <= pushDownInFilterThreshold =>
Review comment:
Sort performance:
```scala
import org.apache.spark.benchmark.Benchmark
val N = 20000000
val array = Range(1, N).map(_.%(10000000)).toArray
val benchmark = new Benchmark(s"Benchmark distinct", valuesPerIteration = N,
minNumIters = 30)
benchmark.addCase("array.sorted") { _ =>
array.sorted
}
benchmark.addCase("array.distinct") { _ =>
array.distinct
}
benchmark.run()
```
```
Java HotSpot(TM) 64-Bit Server VM 1.8.0_251-b08 on Mac OS X 10.15.6
Intel(R) Core(TM) i9-9980HK CPU @ 2.40GHz
Benchmark distinct: Best Time(ms) Avg Time(ms)
Stdev(ms) Rate(M/s) Per Row(ns) Relative
------------------------------------------------------------------------------------------------------------------------
array.sorted 296 821
NaN 67.7 14.8 1.0X
array.distinct 3005 3933
330 6.7 150.2 0.1X
```
----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
[email protected]
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
