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https://issues.apache.org/jira/browse/KAFKA-4005?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15823556#comment-15823556
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Ewen Cheslack-Postava commented on KAFKA-4005:
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I agree this would be useful, but moving out of the target versions since we 
haven't had any sort of PR for a couple of versions -- let's move it back in to 
a target version when we have a real solution.

> Add per topic compression ratio in broker and consumer.
> -------------------------------------------------------
>
>                 Key: KAFKA-4005
>                 URL: https://issues.apache.org/jira/browse/KAFKA-4005
>             Project: Kafka
>          Issue Type: Improvement
>          Components: clients, core
>            Reporter: Jiangjie Qin
>            Assignee: Jiangjie Qin
>
> Currently we only have compression ratio metric on the producer side. It 
> would be very useful to have that in the brokers and consumers for each topic 
> as well. 
> On the broker side, the compression ratio can be potentially depending on the 
> produce request or the final message written to the disk. It is probably more 
> useful to use the compression ratio of the messages we finally writes to 
> disk. If the messages are compressed in different compression type, we can 
> maintain the compression ratio for each type separately.
> The consumer side compression ratio would be for each topic and compression 
> type combination as well.



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