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https://issues.apache.org/jira/browse/KAFKA-6514?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16354625#comment-16354625
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Ismael Juma commented on KAFKA-6514:
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Thanks for the JIRA [~allenxwang]. Agreed that this would be useful. A couple
of comments/questions:
# For compatibility reasons, we may consider keeping the metric without a
version and add new metrics with the version tag.
# We need a simple KIP since this affects metrics, which are public interfaces.
# Given that the KIP freeze for 1.1.0 was on 23 January
([https://cwiki.apache.org/confluence/pages/viewpage.action?pageId=75957546),]
this would have to target the next release.
> Add API version as a tag for the RequestsPerSec metric
> ------------------------------------------------------
>
> Key: KAFKA-6514
> URL: https://issues.apache.org/jira/browse/KAFKA-6514
> Project: Kafka
> Issue Type: Improvement
> Components: core
> Affects Versions: 1.0.0
> Reporter: Allen Wang
> Priority: Major
>
> After we upgrade broker to a new version, one important insight is to see how
> many clients have been upgraded so that we can switch the message format when
> most of the clients have also been updated to the new version to minimize the
> performance penalty.
> RequestsPerSec with the version tag will give us that insight.
>
>
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