Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/12309#discussion_r60732084
--- Diff: core/src/main/scala/org/apache/spark/rdd/PipedRDD.scala ---
@@ -144,7 +142,8 @@ private[spark] class PipedRDD[T: ClassTag](
new Thread(s"stdin writer for $command") {
override def run(): Unit = {
TaskContext.setTaskContext(context)
- val out = new PrintWriter(proc.getOutputStream)
+ val out = new PrintWriter(new BufferedWriter(
--- End diff --
OK, I personally think this is good to merge if we also update the Java API
to include an overload of this method that exposes all of these args, including
the new one.
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