Github user tgravescs commented on a diff in the pull request:
https://github.com/apache/spark/pull/21468#discussion_r193842887
--- Diff:
resource-managers/yarn/src/main/scala/org/apache/spark/deploy/yarn/Client.scala
---
@@ -813,8 +813,14 @@ private[spark] class Client(
if (pythonPath.nonEmpty) {
val pythonPathStr = (sys.env.get("PYTHONPATH") ++ pythonPath)
.mkString(ApplicationConstants.CLASS_PATH_SEPARATOR)
- env("PYTHONPATH") = pythonPathStr
- sparkConf.setExecutorEnv("PYTHONPATH", pythonPathStr)
+ val newValue =
--- End diff --
good questions
- precedence: So right now you can work around this issue by exporting
PYTHONPATH before you launch spark-submit, I think this is something that could
just be in someone's env on the launcher box and might not be what you want in
a yarn container. I would think that specifying explicit pythonpath via
spark.yarn.appMasterEnv would take precedence over that since you explicitly
configured. Now the second question is where that fails with the py-files and
that one isn't as clear to me since like you said its explicitly specified.
Maybe we do py-files then spark.yarn.appMasterEnv.PYTHONPATH and then last env
PYTHONPATH. that is different from the way it is now though. thoughts?
- agree this should not be reflected in the executors so if it is we
shouldn't do that. We should make sure the spark. executorEnv.PYTHONPATH works
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