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Missing "stream" metric label in Streams Mode

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Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
35/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
go
Domain
observability

Research direction

Start by tracing the Streams Mode metrics path for processor_resources and compare it with the processor metrics shown in the issue. Done means processor_resources metrics include the stream label and resource-type pipeline processors emit the expected processor metrics.

Written by the indexing model from the issue text.

Description

needs investigation observability

In Streams Mode, the stream label is missing from processor_resources. Without this label, differentiating metrics across multiple streams becomes impossible.
It would be greatly appreciated to have entries for the pipeline processors of type resource, which currently do not emit any metrics. This would certainly serve as a workaround.

processor_received{instance="worker-2", path="root.pipeline.processors.0", stream="abc"} 21
processor_received{instance="worker-2", path="root.pipeline.processors.15", stream="abc"} 0
processor_received{instance="worker-2", path="root.pipeline.processors.16", stream="abc"} 0
...
processor_received{instance="worker-2", path="root.processor_resources.branch.processors.0"} 21
processor_received{instance="worker-2", path="root.processor_resources.branch.processors.0.try.0"} 21
processor_received{instance="worker-2", path="root.processor_resources.branch.processors.0.try.1"} 18
...
Dominant language
Go
Stars
571
Forks
121
Avg merge
1d 13h
Merged PRs (30d)
15

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