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https://issues.apache.org/jira/browse/KAFKA-12469?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17882931#comment-17882931
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Iacopo Talevi commented on KAFKA-12469:
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We are experiencing the same problem. In our case, the topic is called
‘user.test.sviluppi’, in the producer metrics (on the right in the attached
image) the name is correct while in the consumer metrics (on the left in the
attached image) the dots are replaced by underscores. In our architecture we
use Dynatrace agent to capture the metrics and this renaming does not allow us
to link producer and consumer because for Dynatrace they integrate different
topics. The behaviour can also be replicated with JConsole and with clients of
various versions (see attached image).
!JConsole - Kafka Client.png!
> The topic names in the metrics do not retain their format when extracting
> through JMX.
> --------------------------------------------------------------------------------------
>
> Key: KAFKA-12469
> URL: https://issues.apache.org/jira/browse/KAFKA-12469
> Project: Kafka
> Issue Type: Bug
> Components: consumer, metrics
> Reporter: Rafał Chmielewski
> Priority: Major
> Attachments: JConsole - Kafka Client.png
>
>
> I have topic names that have a period in the name:
> product.order
> product.offering.price
>
> However, for the metrics issued by JMX by a program that is a consumer of
> Kafka messages, the dots are replaced with an underscore:
> kafka.consumer<type=consumer-fetch-manager-metrics,
> client-id=consumer-export-4, topic=product_offering_price,
> partition=1><>records-lead
>
> This creates a problem if I want to calculate the customer's lag in relation
> to the number of messages on Kafka.
>
> But for the producer, this problem doesn't occur:
> kafka.producer<type=producer-topic-metrics,
> client-id=bss.data.verification.pi_1,
> topic=product.offering.price><>record-send-total
>
> As a consumer I use Akka Alpakka. But I think it's using Apache library to
> connect to Kafka and report metrics via JMX.
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