Github user vanzin commented on the pull request:
https://github.com/apache/spark/pull/539#issuecomment-41698742
Hi Tom.
SPARK_YARN_APP_NAME works fine. What doesn't work is when you do not set
that env variable; in that case, the app name in the RM will always be "Spark",
instead of the app name set in your app's SparkConf instance. Unless you
explicitly set the app name using a JVM system property
("-Dspark.app.name=foo").
So:
- set SPARK_YARN_APP_NAME: works fine
- pass "-Dspark.app.name=foo" in command line: works fine
- do "new SparkConf().setAppName("foo")": does not work (RM app name is
"Spark")
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