Markus,

On Tue, Nov 11, 2014 at 10:40 AM, M. Dale <medale94@yahoo.com> wrote:
  I never tried to use this property. I was hoping someone else would jump in. When I saw your original question I remembered that Hadoop has something similar. So I searched and found the link below. A quick JIRA search seems to indicate that there is another property:

https://issues.apache.org/jira/browse/SPARK-2996

Maybe that property will work with yarn: spark.yarn.user.classpath.first

Thank you very much! That property does in fact load the classes from my jar file first when running on YARN, great!

However, in local[N] mode, neither that one nor the spark.files.userClassPathFirst one works. So when using spark-submit with "--master local[3]" instead of "--master yarn-cluster", the value for spark.files.userClassPathFirst is displayed correctly, but the classes are still loaded from the wrong jar...
 
Tobias