Github user mgaido91 commented on a diff in the pull request: https://github.com/apache/spark/pull/19811#discussion_r156930498 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/codegen/CodeGenerator.scala --- @@ -189,15 +255,37 @@ class CodegenContext { def declareMutableStates(): String = { // It's possible that we add same mutable state twice, e.g. the `mergeExpressions` in // `TypedAggregateExpression`, we should call `distinct` here to remove the duplicated ones. - mutableStates.distinct.map { case (javaType, variableName, _) => + val inlinedStates = mutableStates.distinct.map { case (javaType, variableName) => s"private $javaType $variableName;" - }.mkString("\n") + } + + val arrayStates = mutableStateArrayMap.flatMap { case (javaType, mutableStateArrays) => + val numArrays = mutableStateArrays.arrayNames.size + mutableStateArrays.arrayNames.zipWithIndex.map { case (arrayName, index) => + val length = if (index + 1 == numArrays) { + mutableStateArrays.getCurrentIndex + } else { + CodeGenerator.MUTABLESTATEARRAY_SIZE_LIMIT --- End diff -- sorry, stupid question.
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