Chia-Ping Tsai created KAFKA-9730:
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Summary: add tag "partition" to BrokerTopicMetrics so as to
observe the metrics of partition in the same broker
Key: KAFKA-9730
URL: https://issues.apache.org/jira/browse/KAFKA-9730
Project: Kafka
Issue Type: Improvement
Reporter: Chia-Ping Tsai
Assignee: Chia-Ping Tsai
```Partitioner``` enable us to dispatch the data to the specify partition as we
wish. However, we can't observe the partition metrics if they are on the same
broker. The root cause is that the key of topic metrics doesn't contain
"partition" so all partitions on the same broker are merged into single metrics
(see attachment).
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