[jira] [Created] (KAFKA-8392) Kafka broker leaks metric when partition leader moves to another node.

["Kamal Chandraprakash (JIRA)" <ji...@apache.org>]

Kamal Chandraprakash created KAFKA-8392:
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             Summary: Kafka broker leaks metric when partition leader moves to another node.
                 Key: KAFKA-8392
                 URL: https://issues.apache.org/jira/browse/KAFKA-8392
             Project: Kafka
          Issue Type: Bug
          Components: metrics
    Affects Versions: 2.2.0
            Reporter: Kamal Chandraprakash


When a partition leader moves from one node to another due to an imbalance in leader.imbalance.per.broker.percentage, the old leader broker still emits the static metric value.

Steps to reproduce:
1. Create a cluster with 3 nodes.
2. Create a topic with 2 partitions and RF=3
3. Generate some data using the console producer.
4. Move any one of the partition from one node to another using reassign-partitions and preferred-replica-election script.
5. Generate some data using the console producer.
6. Now all the 3 nodes emit bytesIn, bytesOut and MessagesIn for that topic.

Is it the expected behavior?



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