Github user tgravescs commented on a diff in the pull request:
https://github.com/apache/spark/pull/15009#discussion_r100320712
--- Diff:
resource-managers/yarn/src/main/scala/org/apache/spark/deploy/yarn/Client.scala
---
@@ -1149,13 +1179,23 @@ private object Client extends Logging {
// Set an env variable indicating we are running in YARN mode.
// Note that any env variable with the SPARK_ prefix gets propagated
to all (remote) processes
System.setProperty("SPARK_YARN_MODE", "true")
+
+ val threadEnabled: Boolean =
conf.get(SparkLauncher.LAUNCHER_INTERNAL_THREAD_ENABLED).
--- End diff --
wouldn't hurt to have a comment here explaining this and below if for
loading the conf. I think ideally both cases would pass the conf but we can
do the other later
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