Github user andreweduffy commented on the issue:
https://github.com/apache/spark/pull/13953
@petermaxlee can you give an example of how it can "get into a lot of
problems"? The use case seems weird if you're usually developing on hardware
that you control, but makes more sense if you're developing a Spark application
and then want to give it to someone to run on their own cluster. It integrates
with `SparkLauncher` so that you can spawn cluster jobs that use the correct
version of Java without forcing the recipient of the app to futz with their
cluster.
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