Sean Quah created KAFKA-19445:
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             Summary: Group coordinator and share coordinator runtime metrics 
are aliased
                 Key: KAFKA-19445
                 URL: https://issues.apache.org/jira/browse/KAFKA-19445
             Project: Kafka
          Issue Type: Bug
          Components: group-coordinator
            Reporter: Sean Quah
            Assignee: Sean Quah


Both the group coordinator and share coordinator runtime metrics use the same 
sensor names and so end up with the same {{Sensors}}. These sensors have both 
the group and share coordinator metrics as children. When data is reported to a 
sensor, the data gets added to all the child metrics of the sensor, so both the 
group coordinator and share coordinator metrics end up adding together and have 
identical values.

We can fix this by ensuring that {{GroupCoordinatorRuntimeMetrics}} and 
{{ShareCoordinatorRuntimeMetrics}} use different {{Sensors}}.



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