Github user vanzin commented on the pull request:
https://github.com/apache/spark/pull/3233#issuecomment-71944450
> The new spark.driver.userClassPathFirst property seems a little strange
to me in that, IIUC, it only takes effect when the driver is started through
the application master.
That's incorrect. It applies both in client and cluster mode - thus the
changes in `SparkSubmit.scala`. The use case for it is when a user app wants to
use a different version of some library that is in the Spark assembly; for
example, this could allow you to use your own version of Jetty without Spark
having to shade/relocate it.
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
