it'd be nice to have some opencensus integration in dagster -- both having dagster emit traces+metrics but also perhaps a helper to thread trace context via the dagster context

Yeah, we’re doing some exploratory work right now on how we want to ship metrics to external systems like Datadog, Prometheus, etc. - @sashank can likely share a bit on this

we have most of our internal code instrumented with opencensus already and it'd be nice to, for example, tie spans into a common root span representing the run -- we can work around this I think but especially if we're crossing process boundaries like with a remote executor having the ability to pass along custom context content becomes relevant