Guozhang Wang created KAFKA-3881:
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Summary: Remove the replacing logic from "." to "_" in Fetcher
Key: KAFKA-3881
URL: https://issues.apache.org/jira/browse/KAFKA-3881
Project: Kafka
Issue Type: Bug
Components: metrics, consumer
Reporter: Guozhang Wang
Assignee: Ismael Juma
The logic of replacing "." to "_" in metrics names / tags was originally
introduced in the core package's metrics since Graphite treats "." as hierarchy
separators (see KAFKA-1902); for the client metrics, it is supposed that the
GraphiteReported should take care of this itself rather than letting Kafka
metrics to special handle for it. In addition, right now only consumer Fetcher
had replace, but producer Sender does not have it actually.
So we should consider removing this logic in the consumer Fetcher's metrics
package. NOTE that this is a public API backward incompatible change.
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