[SPARK-36360][Streaming] Delete appName from StreamingSource sourceName #33632
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What changes were proposed in this pull request?
This pull request proposes to exclude the appName from the sourceName in StreamingSource following the example of the other sources, e.g.
ExecutorMetricsSource
.Why are the changes needed?
The StreamingSource includes the appName in its sourceName. However, the appName should not be handled by the StreamingSource. It is already handled by the MetricsSystem. See all other MetricSources, e.g. ExecutorMetricsSource.
Why is this important? See this part from the documentation:
This is only possible if the MetricsSystem handles the namespace which it does. But the StreamingSource additionally adds the appName in its sourceName, thus there is no way to configure a namespace that does not include the appName.
Does this PR introduce any user-facing change?
The proposed change conforms to the documentation. See here.
How was this patch tested?
No tests added.