Github user kiszk commented on a diff in the pull request:
https://github.com/apache/spark/pull/20153#discussion_r160472490
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/ColumnarBatchScan.scala
---
@@ -137,4 +147,25 @@ private[sql] trait ColumnarBatchScan extends
CodegenSupport {
""".stripMargin
}
+ private def produceRows(ctx: CodegenContext, input: String): String = {
+ val numOutputRows = metricTerm(ctx, "numOutputRows")
+ val row = ctx.freshName("row")
+
+ ctx.INPUT_ROW = row
+ ctx.currentVars = null
+ // Always provide `outputVars`, so that the framework can help us
build unsafe row if the input
+ // row is not unsafe row, i.e. `needsUnsafeRowConversion` is true.
+ val outputVars = output.zipWithIndex.map{ case (a, i) =>
--- End diff --
nit: `map {`
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