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https://issues.apache.org/jira/browse/KAFKA-8995?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17049817#comment-17049817
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ASF GitHub Bot commented on KAFKA-8995:
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guozhangwang commented on pull request #8208: KAFKA-8995: delete all topics
before recreating
URL: https://github.com/apache/kafka/pull/8208
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> Add new metric on broker to illustrate produce request compression percentage
> -----------------------------------------------------------------------------
>
> Key: KAFKA-8995
> URL: https://issues.apache.org/jira/browse/KAFKA-8995
> Project: Kafka
> Issue Type: Improvement
> Components: core
> Reporter: Jun Rao
> Assignee: Guozhang Wang
> Priority: Major
> Labels: needs-kip
>
> When `compression.type` is set to `producer`, we would accept produce request
> and use its encoded compression to apply to the logs; otherwise we would
> recompress the message according to the configured compression type before
> appending. There are pros and cons to recompress the data: you pay more CPU
> to recompress, but you reduce the storage cost.
> In practice, if the incoming produce requests are not compressed, then
> compressing before appending maybe more beneficial, otherwise just keep them
> as if `producer` config maybe better. Adding a metric to expose the incoming
> requests' compression in percentage would be a helpful data point to help
> operators selecting their compression policy.
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