Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/11628#discussion_r55650167
--- Diff: core/src/main/scala/org/apache/spark/rdd/PipedRDD.scala ---
@@ -133,23 +136,30 @@ private[spark] class PipedRDD[T: ClassTag](
// Start a thread to feed the process input from our parent's iterator
new Thread("stdin writer for " + command) {
override def run() {
- TaskContext.setTaskContext(context)
val out = new PrintWriter(proc.getOutputStream)
- // scalastyle:off println
- // input the pipe context firstly
- if (printPipeContext != null) {
- printPipeContext(out.println(_))
- }
- for (elem <- firstParent[T].iterator(split, context)) {
- if (printRDDElement != null) {
- printRDDElement(elem, out.println(_))
- } else {
- out.println(elem)
+ try {
+ TaskContext.setTaskContext(context)
--- End diff --
(Did this need to move?)
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