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Posted to reviews@spark.apache.org by GitBox <gi...@apache.org> on 2021/05/13 03:38:28 UTC

[GitHub] [spark] dongjoon-hyun commented on a change in pull request #32527: [SPARK-35384][SQL] Improve performance for InvokeLike.invoke

dongjoon-hyun commented on a change in pull request #32527:
URL: https://github.com/apache/spark/pull/32527#discussion_r631540103



##########
File path: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/objects/objects.scala
##########
@@ -127,13 +128,18 @@ trait InvokeLike extends Expression with NonSQLExpression {
       arguments: Seq[Expression],
       input: InternalRow,
       dataType: DataType): Any = {
-    val args = arguments.map(e => e.eval(input).asInstanceOf[Object])
-    if (needNullCheck && args.exists(_ == null)) {
+    var i = 0
+    val len = arguments.length
+    while (i < len) {
+      evaluatedArgs(i) = arguments(i).eval(input).asInstanceOf[Object]

Review comment:
       I guess it's aims to reuse `Array[Object]` itself and only changes the values of array.

##########
File path: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/objects/objects.scala
##########
@@ -127,13 +128,18 @@ trait InvokeLike extends Expression with NonSQLExpression {
       arguments: Seq[Expression],
       input: InternalRow,
       dataType: DataType): Any = {
-    val args = arguments.map(e => e.eval(input).asInstanceOf[Object])
-    if (needNullCheck && args.exists(_ == null)) {
+    var i = 0
+    val len = arguments.length
+    while (i < len) {
+      evaluatedArgs(i) = arguments(i).eval(input).asInstanceOf[Object]

Review comment:
       I guess it aims to reuse `Array[Object]` itself and only changes the values of array.




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