Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/21977#discussion_r211752765
--- Diff:
resource-managers/yarn/src/main/scala/org/apache/spark/deploy/yarn/Client.scala
---
@@ -91,6 +91,13 @@ private[spark] class Client(
private val executorMemoryOverhead =
sparkConf.get(EXECUTOR_MEMORY_OVERHEAD).getOrElse(
math.max((MEMORY_OVERHEAD_FACTOR * executorMemory).toLong,
MEMORY_OVERHEAD_MIN)).toInt
+ private val isPython = sparkConf.get(IS_PYTHON_APP)
--- End diff --
That's not really documented but as Holden says, it exists. Livy does that
- but Livy actually goes ahead and sets the internal `spark.yarn.isPython`
property, so it would actually take advantage of this code...
Not sure how others do it, but all the ways I thought on how to expose this
as an option were pretty hacky, so I think it's ok to leave things like this
for now.
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