KAFKA-19936: avoid counting duplicated records in metrics #21242
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Signed-off-by: PoAn Yang <payang@apache.org>
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This PR fixes an issue where duplicated idempotent records were being
incorrectly counted in broker topic metrics (
bytesInRateandmessagesInRate). When a producer retries sending records that havealready been successfully written to the log, these duplicate records
should not be counted again in the metrics.