Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/3233#discussion_r24356487
--- Diff: yarn/src/main/scala/org/apache/spark/deploy/yarn/Client.scala ---
@@ -318,6 +314,13 @@ private[spark] class Client(
env("SPARK_YARN_STAGING_DIR") = stagingDir
env("SPARK_USER") =
UserGroupInformation.getCurrentUser().getShortUserName()
+ // Propagate SPARK_HOME to the containers. This is needed for pyspark
to
+ // work, since the executor's PYTHONPATH is built based on the location
+ // of SPARK_HOME.
+
sparkConf.getOption("spark.home").orElse(sys.env.get("SPARK_HOME")).foreach {
path =>
+ env("SPARK_HOME") = path
+ }
--- End diff --
It's not entirely related to the patch. But without this I just could not
run pyspark apps on yarn as part of testing. I couldn't for the life of me find
out how SPARK_HOME propagated to executors before.
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