mengxr commented on a change in pull request #24816: [SPARK-27968]
ArrowEvalPythonExec.evaluate shouldn't eagerly read the first row
URL: https://github.com/apache/spark/pull/24816#discussion_r291326122
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/python/ArrowEvalPythonExec.scala
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@@ -86,28 +86,11 @@ case class ArrowEvalPythonExec(udfs: Seq[PythonUDF],
resultAttrs: Seq[Attribute]
sessionLocalTimeZone,
pythonRunnerConf).compute(batchIter, context.partitionId(), context)
- new Iterator[InternalRow] {
-
- private var currentIter = if (columnarBatchIter.hasNext) {
- val batch = columnarBatchIter.next()
Review comment:
This is the line that eagerly reads.
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