maropu commented on a change in pull request #20965: [SPARK-21870][SQL] Split
aggregation code into small functions
URL: https://github.com/apache/spark/pull/20965#discussion_r316926173
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/aggregate/HashAggregateExec.scala
##########
@@ -255,6 +255,41 @@ case class HashAggregateExec(
""".stripMargin
}
+ // Splits aggregate code into small functions because the most of JVM
implementations
+ // can not compile too long functions. Note that different from
`CodeGenerator.splitExpressions`,
+ // we will extract input variables from references and subexpression
elimination states
+ // for each aggregate expression, then pass them to it.
+ private def splitAggregateExpressions(
+ context: CodegenContext,
+ aggregateExpressions: Seq[Expression],
+ codes: Seq[String],
+ subExprs: Map[Expression, SubExprEliminationState],
+ bufferInput: Option[(String, DataType)] = None): Seq[String] = {
Review comment:
Ur, I see. I replaced it with VariableValue. Thanks!
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