[ 
https://issues.apache.org/jira/browse/KAFKA-17161?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Doug Hoard updated KAFKA-17161:
-------------------------------
    Description: 
*Summary*

When exporting JMX metrics from a server, REST Jersey metric names are 
inconsistent, resulting in two metrics different metrics with the same value.
{code:java}
v3.topics-partitions-reassignment.list.request-total
v3.topics.partitions-reassignment.list.request-total{code}
Dash (-) versus period ({{{}.{}}}) between {{topics}} and {{partitions}}

This most likely affects older versions.

*Test scenario*

Install Kafka 3.6.2 with the Prometheus JMX Exporter v1.0.1 and collect 
metrics. The exporter adds an "_objectname" for metrics that map to the same 
Prometheus name.

*Example exporter output*


{noformat}
# HELP kafka_rest_jersey_metrics_v3_topics_partitions_reassignment_list_request 
The request count using a cumulative counter 
kafka.rest:name=null,type=jersey-metrics,attribute=v3.topics.partitions-reassignment.list.request-total
# TYPE kafka_rest_jersey_metrics_v3_topics_partitions_reassignment_list_request 
untyped
kafka_rest_jersey_metrics_v3_topics_partitions_reassignment_list_request{_objectname="kafka.rest<type=jersey-metrics><>v3.topics-partitions-reassignment.list.request-total"}
 0.0
kafka_rest_jersey_metrics_v3_topics_partitions_reassignment_list_request{_objectname="kafka.rest<type=jersey-metrics><>v3.topics.partitions-reassignment.list.request-total"}
 0.0
{noformat}


  was:
*Summary*

When exporting JMX metrics from a server, REST Jersey metric names are 
inconsistent, resulting in two metrics different metrics with the same value.
{code:java}
v3.topics-partitions-reassignment.list.request-total
v3.topics.partitions-reassignment.list.request-total{code}
Dash (-) versus period ({{{}.{}}}) between {{topics}} and {{partitions}}

This most likely affects older versions.

*Test scenario*

Install Kafka 3.6.2 with the Prometheus JMX Exporter v1.0.1 and collect 
metrics. The exporter adds an "_objectname" for metrics that map to the same 
Prometheus name.

Example exporter output
{code:java}
# HELP kafka_rest_jersey_metrics_v3_topics_partitions_reassignment_list_request 
The request count using a cumulative counter 
kafka.rest:name=null,type=jersey-metrics,attribute=v3.topics.partitions-reassignment.list.request-total
# TYPE kafka_rest_jersey_metrics_v3_topics_partitions_reassignment_list_request 
untyped
kafka_rest_jersey_metrics_v3_topics_partitions_reassignment_list_request{_objectname="kafka.rest<type=jersey-metrics><>v3.topics-partitions-reassignment.list.request-total"}
 0.0
kafka_rest_jersey_metrics_v3_topics_partitions_reassignment_list_request{_objectname="kafka.rest<type=jersey-metrics><>v3.topics.partitions-reassignment.list.request-total"}
 0.0 {code}


> REST Jersey metric names are inconsistent
> -----------------------------------------
>
>                 Key: KAFKA-17161
>                 URL: https://issues.apache.org/jira/browse/KAFKA-17161
>             Project: Kafka
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 3.6.2
>            Reporter: Doug Hoard
>            Priority: Minor
>
> *Summary*
> When exporting JMX metrics from a server, REST Jersey metric names are 
> inconsistent, resulting in two metrics different metrics with the same value.
> {code:java}
> v3.topics-partitions-reassignment.list.request-total
> v3.topics.partitions-reassignment.list.request-total{code}
> Dash (-) versus period ({{{}.{}}}) between {{topics}} and {{partitions}}
> This most likely affects older versions.
> *Test scenario*
> Install Kafka 3.6.2 with the Prometheus JMX Exporter v1.0.1 and collect 
> metrics. The exporter adds an "_objectname" for metrics that map to the same 
> Prometheus name.
> *Example exporter output*
> {noformat}
> # HELP 
> kafka_rest_jersey_metrics_v3_topics_partitions_reassignment_list_request The 
> request count using a cumulative counter 
> kafka.rest:name=null,type=jersey-metrics,attribute=v3.topics.partitions-reassignment.list.request-total
> # TYPE 
> kafka_rest_jersey_metrics_v3_topics_partitions_reassignment_list_request 
> untyped
> kafka_rest_jersey_metrics_v3_topics_partitions_reassignment_list_request{_objectname="kafka.rest<type=jersey-metrics><>v3.topics-partitions-reassignment.list.request-total"}
>  0.0
> kafka_rest_jersey_metrics_v3_topics_partitions_reassignment_list_request{_objectname="kafka.rest<type=jersey-metrics><>v3.topics.partitions-reassignment.list.request-total"}
>  0.0
> {noformat}



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