Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/6404#discussion_r31016417
--- Diff:
sql/hive/src/main/scala/org/apache/spark/sql/hive/execution/ScriptTransformation.scala
---
@@ -58,11 +58,12 @@ case class ScriptTransformation(
child.execute().mapPartitions { iter =>
val cmd = List("/bin/bash", "-c", script)
val builder = new ProcessBuilder(cmd)
+ builder.redirectErrorStream(true)
--- End diff --
Isn't this pushing stderr into stdout? that mixes error output with the
program output.
I'm not arguing against consuming stderr, but maybe against pouring into
stdout.
BTW is this still an issue with `ProcessBuilder`? I know it was a problem
in Java back in the day; you had to consume the streams or face deadlock. I
imagine it still is but I haven't written code for `ProcessBuilder` in a long
time.
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