Some attributes of target_info may be repeated and are separated by colons.

[halleystar]

Component(s)

pkg/translator/prometheusremotewrite

What happened?

Description

Some attributes of target_info may be repeated and separated by colons. Also, if I turn off target_info, it will delete the target_info I generated on the client side.

Steps to Reproduce

Use java-auto-instrumentation and use prometheus exporter。 The metric list will contain the target_info metric by default. AND then Enabling target_info in prometheusremotewrite will cause the label in the final target_info metric to be repeated. However, if target_info is turned off, there will be no target_info in the output metric list.

Expected Result

Actual Result

Collector version

0.105.0

Environment information

Environment

OS: (e.g., "Ubuntu 20.04")
Compiler(if manually compiled): (e.g., "go 14.2")

OpenTelemetry Collector configuration

No response

Log output

No response

Additional context

No response

[github-actions]

Pinging code owners:

• pkg/translator/prometheusremotewrite: @Aneurysm9

See Adding Labels via Comments if you do not have permissions to add labels yourself.

[github-actions]

This issue has been inactive for 60 days. It will be closed in 60 days if there is no activity. To ping code owners by adding a component label, see Adding Labels via Comments, or if you are unsure of which component this issue relates to, please ping @open-telemetry/collector-contrib-triagers. If this issue is still relevant, please ping the code owners or leave a comment explaining why it is still relevant. Otherwise, please close it.

Pinging code owners:

• pkg/translator/prometheusremotewrite: @Aneurysm9 @dashpole

See Adding Labels via Comments if you do not have permissions to add labels yourself.

[dashpole]

The Prometheus receiver should be turning the target_info metric from the prometheus endpoint into the resource of the OTel metric, which should then be turned back into target_info in the PRW exporter. So this sounds like a bug in the prometheus receiver.

Can you share the full scrape output from the application?