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https://issues.apache.org/jira/browse/KAFKA-2306?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14617252#comment-14617252
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Guozhang Wang commented on KAFKA-2306:
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Thanks for the patch. Committed to trunk.
> New producer should emit metrics for buffer exhaustion
> ------------------------------------------------------
>
> Key: KAFKA-2306
> URL: https://issues.apache.org/jira/browse/KAFKA-2306
> Project: Kafka
> Issue Type: Bug
> Reporter: Dong Lin
> Assignee: Dong Lin
> Fix For: 0.8.3
>
> Attachments: KAFKA-2306.patch, KAFKA-2306_2015-07-06_14:54:01.patch,
> KAFKA-2306_2015-07-06_18:21:43.patch, KAFKA-2306_2015-07-07_10:47:10.patch
>
>
> In the old producer we have droppedMessageRate that allows user to monitor
> the number of messages dropped when buffer is full and block on buffer full
> is set to false. This metric is useful in operation. However, in the new
> producer we don't have this a metric.
> The "errors" sensor in new-producers measures per-record error that is not
> limited to those caused by BufferExhaustedException. Thus it is not good
> enough.
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