[
https://issues.apache.org/jira/browse/KAFKA-12469?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17897284#comment-17897284
]
Apoorv Mittal commented on KAFKA-12469:
---------------------------------------
I have checked with kafka-clients version 3.3.2 which has been released in
Jan-2023 and it also outputs the topic names as in current kafka trunk i.e.
kafka-producer outputs topic names with `.` being replaced while kafka-consumer
does replace `.` with `_`. If we need to fix this then we have to deprecate
older metrics and output new kafka-consumer metrics without replacement. I
think it should require a KIP. Adding [~chia7712] [~schofielaj] [~junrao] for
feedback, I can write the KIP if we require.
> 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
> Assignee: Apoorv Mittal
> 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.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
