Dongnuo Lyu created KAFKA-18655:
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Summary: Implement the consumer group size counter with scheduled
task
Key: KAFKA-18655
URL: https://issues.apache.org/jira/browse/KAFKA-18655
Project: Kafka
Issue Type: Sub-task
Reporter: Dongnuo Lyu
Assignee: Dongnuo Lyu
During testing we discovered that the empty group count is not updated in group
conversion, but when the new group is transition to other state, the empty
group count is decremented. This could result in negative empty group count.
We can have a new consumer group count implementation that follows the pattern
we did for the classic group count. The timeout task periodically refreshes the
metrics based on the current groups soft state.
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