Github user vanzin commented on the issue:
https://github.com/apache/spark/pull/19981
> It's possible that people writing Spark applications with Spark SQL
dependency, but not using SQL
Yes, and the SQL listener will ignore all the events, as it should even in
the case that SQL was used, because users are allowed to run SQL and non-SQL
workloads in the same application.
> I do think we should only create the SQL tab when users actually use SQL
functions.
Create or show? If it's not shown the user-visible behavior is the same,
isn't it? That was the second of my suggestions.
> because of this behavior change.
The behavior change is all internal and not visible to users, and that was
the goal of the change.
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