tgravescs opened a new pull request, #41703:
URL: https://github.com/apache/spark/pull/41703
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### What changes were proposed in this pull request?
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https://issues.apache.org/jira/browse/SPARK-44134
With resource aware scheduling, if you specify a default value in the
spark-defaults.conf, a user can't override that to set it to 0.
Meaning spark-defaults.conf has something like:
spark.executor.resource.{resourceName}.amount=1
spark.task.resource.{resourceName}.amount =1
If the user tries to override when submitting an application with
spark.executor.resource.{resourceName}.amount=0 and
spark.task.resource.{resourceName}.amount =0, the applicatoin fails to submit.
it should submit and just not try to allocate those resources. This worked back
in Spark 3.0 but was broken when the stage level scheduling feature was added.
Here I fixed it by simply removing any task resources from the list if they
are set to 0.
Note I also fixed a typo in the exception message when no executor resources
are specified but task resources are.
### Why are the changes needed?
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Fix a bug described above
### Does this PR introduce _any_ user-facing change?
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no api changes
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Added unit test and then ran manually on standalone and YARN clusters to
verify overriding the configs now works.
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