Github user zsxwing commented on the issue:
https://github.com/apache/spark/pull/16936
I agreed with @srowen. Streaming should not need to know the details about
the mode, and when someone changes other modules, they won't know these codes
inside streaming. I would like to see a cleaner solution.
In addition, when there are not enough resources in a cluster, even if the
user sets a large core number, they will still not be able to run the streaming
job. Hence, they should always be aware of this limitation of Streaming
receivers, and it seems not worth to fix this issue.
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