[GitHub] [spark] cloud-fan commented on a change in pull request #32496: [SPARK-35207][SQL] Normalize hash function behavior with negative zero

[GitBox <gi...@apache.org>]

cloud-fan commented on a change in pull request #32496:
URL: https://github.com/apache/spark/pull/32496#discussion_r631622732



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File path: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/hash.scala
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@@ -369,11 +369,25 @@ abstract class HashExpression[E] extends Expression {
   protected def genHashBoolean(input: String, result: String): String =
     genHashInt(s"$input ? 1 : 0", result)
 
-  protected def genHashFloat(input: String, result: String): String =
-    genHashInt(s"Float.floatToIntBits($input)", result)
+  protected def genHashFloat(input: String, result: String): String = {
+    s"""
+       |if(Float.floatToIntBits($input) == Float.floatToIntBits(-0.0f)) {

Review comment:
       +1




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