Github user tejasapatil commented on a diff in the pull request: https://github.com/apache/spark/pull/15047#discussion_r81014894 --- Diff: sql/catalyst/src/test/scala/org/apache/spark/sql/HashByteArrayBenchmark.scala --- @@ -59,90 +59,110 @@ object HashByteArrayBenchmark { } } + benchmark.addCase("HiveHasher") { _: Int => + for (_ <- 0L until iters) { + var sum = 0L + var i = 0 + while (i < numArrays) { + sum += HiveHasher.hashUnsafeBytes(arrays(i), Platform.BYTE_ARRAY_OFFSET, length) + i += 1 + } + } + } + benchmark.run() } def main(args: Array[String]): Unit = { /* - Intel(R) Core(TM) i7-4750HQ CPU @ 2.00GHz - Hash byte arrays with length 8: Best/Avg Time(ms) Rate(M/s) Per Row(ns) Relative - ------------------------------------------------------------------------------------------- - Murmur3_x86_32 11 / 12 185.1 5.4 1.0X - xxHash 64-bit 17 / 18 120.0 8.3 0.6X + Intel(R) Core(TM) i7-4558U CPU @ 2.80GHz + Hash byte arrays with length 8: Best/Avg Time(ms) Rate(M/s) Per Row(ns) Relative + ------------------------------------------------------------------------------------------------ + Murmur3_x86_32 11 / 12 198.9 5.0 1.0X + xxHash 64-bit 16 / 19 130.1 7.7 0.7X + HiveHasher 0 / 0 282254.6 0.0 1419.0X --- End diff -- @hvanhovell : Thanks for pointing this out. At first I printed the `sum` but that had lot of noise on console so moved `sum` out of the loop (both showed similar results).
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