HyukjinKwon commented on a change in pull request #23746: [SPARK-26761][SQL][R]
Vectorized R gapply() implementation
URL: https://github.com/apache/spark/pull/23746#discussion_r255298042
##########
File path: core/src/main/scala/org/apache/spark/api/r/RRunner.scala
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@@ -91,28 +91,70 @@ private[spark] class RRunner[U](
}
try {
- return new Iterator[U] {
- def next(): U = {
- val obj = _nextObj
- if (hasNext) {
- _nextObj = read()
- }
- obj
+ newReaderIterator(dataStream, errThread)
+ } catch {
+ case e: Exception =>
+ throw new SparkException("R computation failed with\n " +
errThread.getLines(), e)
+ }
+ }
+
+ protected def newReaderIterator(
Review comment:
Codes here are almost not changed. I just exposed some method to inherit it
in ArrowRRunner. This code needs refactoring as a common parent like
PythonRunner but I don't target it here.
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