DL1231 opened a new pull request, #21573:
URL: https://github.com/apache/kafka/pull/21573
Partition-level `ExpiresPerSec` metrics in `DelayedProduceMetrics` and
`DelayedRemoteListOffsets` are never removed, leading to metric accumulation
over time.
This patch adds `removePartitionMetrics` to both classes and calls it from
`ReplicaManager` in two paths:
- `stopPartitions()`, partition deletion and controlled shutdown.
- `applyLocalFollowersDelta()`, leader-to-follower transitions.
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