Daniel Wojda created KAFKA-6176:
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Summary: numDroppedMessages metric should not be incremented when
no data are lost
Key: KAFKA-6176
URL: https://issues.apache.org/jira/browse/KAFKA-6176
Project: Kafka
Issue Type: Bug
Components: metrics
Affects Versions: 1.0.0
Reporter: Daniel Wojda
Priority: Minor
Mirror Maker can be configured to not lose the data when producing failed.
However when Mirror Maker is configured correctly and no messages are lost,
*numDroppedMessages* metric is increased in case of producer failure. It is
misleading for people who monitor Mirror Maker.
Could we increase that metric when messages are really dropped? Or at least
change the name to "numProducerFailuers"?
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