Github user lianhuiwang commented on a diff in the pull request:
https://github.com/apache/spark/pull/3976#discussion_r23904612
--- Diff:
yarn/src/test/scala/org/apache/spark/deploy/yarn/YarnClusterSuite.scala ---
@@ -98,6 +121,9 @@ class YarnClusterSuite extends FunSuite with
BeforeAndAfterAll with Matchers wit
}
fakeSparkJar = File.createTempFile("sparkJar", null, tempDir)
+ val sparkHome = sys.props.getOrElse("spark.test.home",
fail("spark.test.home is not set!"))
--- End diff --
Because PythonRunner should use sparkPythonPath that contains pyspark
library, here i add SPARK_HOME to env of executor and driver. if we do not add
this env, python in executor or driver cannot work. @sryza
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