Answer by SergiyKolesnikov for Spark Error - Unsupported class file major version

For Debian 10 'buster' users, Java 8 JRE is available in the nvidia-openjdk-8-jre package.

Install it with

sudo apt install nvidia-openjdk-8-jre

Then set JAVA_HOME when running pyspark, e.g.:

JAVA_HOME=/usr/lib/jvm/nvidia-java-8-openjdk-amd64/ pyspark