Spark 3 FAQs

Can I install only one or two Spark versions?

Yes! You can install any combination of the three versions based on your requirements. Installation is independent and modular.

Which Spark version should I use for new applications?

Spark 3.5.5 is recommended for all new applications. It provides the latest features, best performance, and will receive future updates.

Can I upgrade an existing Spark installation to this multi-version setup?

Yes, but requires careful planning:

Do I need separate YARN queues for different Spark versions?

Not required, but recommended for:

How do I choose between Spark versions at runtime?

Use different spark-submit paths or set SPARK_HOME environment variable to the desired version's client directory.

What happens to existing Spark applications after installing multiple versions?

Existing applications continue to work. You control which version each application uses by specifying the appropriate SPARK_HOME.

Can different versions run on the same YARN cluster?

Yes! All versions submit jobs to the same YARN ResourceManager. YARN schedules containers regardless of Spark version.