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    ioolkos
    @ioolkos
    jep, it's the default tracer. Would the default tracer not sample a call as above?
    Tristan Sloughter
    @tsloughter
    ok. no, it should
    ioolkos
    @ioolkos
    ok, thanks
    ioolkos
    @ioolkos
    Btw do exporters have to fully implements those return values? https://github.com/open-telemetry/opentelemetry-erlang/blob/0e448fd368bce65f812b8d8fea6f345176ce6ad0/apps/opentelemetry/src/otel_exporter.erl#L28
    Tristan Sloughter
    @tsloughter
    no, they can return any subset
    ioolkos
    @ioolkos
    I put above example in a minimal app: https://github.com/ioolkos/otel_example/. I still must be missing some basic step in the setup, as I don't see that span exported.
    Tristan Sloughter
    @tsloughter
    oh, I bet the sampler arg isn't working
    becuase the way it is setup in your _app is slightly wrong
    yea
    @ioolkos you need to load and set the env variable before starting opentelemetry https://gist.github.com/tsloughter/7ff0ce8bfb0a884560de82e6b2a331a6
    ioolkos
    @ioolkos
    @tsloughter ah man, of course.
    thanks!
    Tristan Sloughter
    @tsloughter
    ok, hm, the sampler arg does work
    but still requires moving set_env of course
    ioolkos
    @ioolkos
    yeah, I can still set the sampler dynamically
    Tristan Sloughter
    @tsloughter
    oh, yea, so the processors weren't setup
    ioolkos
    @ioolkos
    jep
    Tristan Sloughter
    @tsloughter
    that was the issue before
    ok
    ioolkos
    @ioolkos
    exactly
    Tristan Sloughter
    @tsloughter
    better to just put this stuff in a sys.config and add the apps to applications in the .app.src :)
    ioolkos
    @ioolkos
    sure, just wanted to be as dynamic and explicit as possible
    great stuff :)
    Tristan Sloughter
    @tsloughter
    cool
    ioolkos
    @ioolkos
    thanks for your help
    ioolkos
    @ioolkos
    I noticed ?set_status(?OTEL_STATUS_OK) doesn't set status.code to 1 in opentelemetry-collector pipeline to jaeger. Always stays 'unset' and 0 in jaeger. But I guess that's an issue of the collector, not otel-erlang. (and there's also a set of deprecated status codes, it seems)
    Peter Saxton
    @CrowdHailer
    Howdy. Was just wondering if I could ask for a few more pointers. Relating to your comment in this issue. https://github.com/open-telemetry/opentelemetry-erlang/issues/160#issuecomment-734831168 stdout exporter is in the example config.exs. I'm looking at the example and can't see where the stdout exporter is set up. Looked at both the phoenix application https://github.com/opentelemetry-beam/opentelemetry-examples/blob/master/phoenix_backend/config/config.exs and the plug application that doesn't have a config file
    Tristan Sloughter
    @tsloughter
    "tdout exporter is in the example config.exs."
    ?
    Peter Saxton
    @CrowdHailer
    I've figured that part out. Was just asking for clarification on the linked comment on github.
    I now have a mostly functioning setup here https://github.com/did-app/glance/pull/2/files
    All that's let is to send the traces to somewhere I can usefully view them. i.e. replace the stdout exporter.
    What would anyone recommend using for local development.
    Peter Saxton
    @CrowdHailer
    I see a datadog setup in the examples repo but cant work out if the locally running agent will show my traces or if I need to send them to an account I have with datadog
    Peter Saxton
    @CrowdHailer
    So it looks like Jaeger and zipkin are my choices for running a collector and ui locally.
    Tristan Sloughter
    @tsloughter
    yea
    Peter Saxton
    @CrowdHailer
    I've also moved on to using the opentelemetry_exporter I can only find docs on jaeger about supporting protobuf.
    From what it says here https://www.jaegertracing.io/docs/1.21/getting-started/ I "think" I need to point the opentelemetry_exporter to use localhost: 14250
    What I'm not sure about is if model.proto means that it accepts the opentelemetry http_protobuf format. I'm guessing it does.
    Tristan Sloughter
    @tsloughter
    hm, don't know. but you can use the zipkin exporter to write to jaeger
    if you don't want to have to to the collector to get to jaeger
    Peter Saxton
    @CrowdHailer
    The zipkin exporter doesn't work with {opentelemetry, 0.5.0}
    What would you use to look at traces generated locally?
    Or perhaps more relevant what services or local things can will accept what https://github.com/open-telemetry/opentelemetry-erlang/tree/master/apps/opentelemetry_exporter is sending
    Tristan Sloughter
    @tsloughter
    not sure what else exists, opentelemetry collector might have a visualization option in its contrib repo
    Tristan Sloughter
    @tsloughter
    and the update to the zipkin exporter to 0.5.0 shouldn't be much to change
    Chulki Lee
    @chulkilee
    Hi - I'm working on improving docs - open-telemetry/opentelemetry-erlang#176 - and I have a few questions. 1) I see this gitter room is mentioned in one of README. Is this the place to join? Then I'll add it to all README
    Chulki Lee
    @chulkilee
    Also.. do we have benchmark? seems like c25ac353602cf1ce8d655e2f5c7e850e147151ce removed code from samples.
    Tristan Sloughter
    @tsloughter
    if I remember correctly the benchmarks were removed because the particular ones didn't make sense anymore and none have been added since
    this gitter is like the official opentelemetry channel for the Erlang SIG. but discussion also happens through the Erlang Ecosystem Foundation observability working group channel in the Erlang slack