Github user dongjoon-hyun commented on a diff in the pull request:
https://github.com/apache/spark/pull/22652#discussion_r223195444
--- Diff:
sql/catalyst/src/test/scala/org/apache/spark/sql/HashByteArrayBenchmark.scala
---
@@ -19,15 +19,23 @@ package org.apache.spark.sql
import java.util.Random
-import org.apache.spark.benchmark.Benchmark
+import org.apache.spark.benchmark.{Benchmark, BenchmarkBase}
import org.apache.spark.sql.catalyst.expressions.{HiveHasher, XXH64}
import org.apache.spark.unsafe.Platform
import org.apache.spark.unsafe.hash.Murmur3_x86_32
/**
* Synthetic benchmark for MurMurHash 3 and xxHash64.
+ * To run this benchmark:
+ * {{{
+ * 1. without sbt: bin/spark-submit --class <this class> <spark catalyst
test jar>
--- End diff --
It seems that we missed this because we thought this is a legacy guide
which has been worked before.
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