How can all DogStatsD metrics coming via UDS be tagged with the same tags as with autodiscovery?

Tagging DogStatsD metrics via UDS (Unix Domain Socket) with the same tags as those provided by autodiscovery is achieved by enabling origin detection. When you set DD_DOGSTATSD_ORIGIN_DETECTION=true, it allows DogStatsD to automatically associate incoming metrics with the relevant configuration based on the service and environment. This means that any application emitting metrics will automatically gain the appropriate tags that have been defined in your autodiscovery configuration. This automation simplifies the process of maintaining consistent tagging across metrics emitted from various sources, ensuring accurate grouping and filtering when analyzing data in Datadog.

The other options either disable this functionality or do not pertain to the context of automatic tagging with autodiscovery tags. For instance, setting DD_DOGSTATSD_ORIGIN_DETECTION=false would prevent metrics from being tagged automatically, which goes against the intent of tagging all DogStatsD metrics consistently with autodiscovery tags.