Tracer and OkHttp: what happen when apply sampler for both of them? about dd-sdk-android

[xgouchet]

Hi @alecarnevale and thanks for contacting us.

Regarding the sampling rates from the AndroidTracer and the TracingInterceptor, they are as you thought cumulative.
The former one simply asks how many spans (out of all the one the tracer receives) should be kept, and the latter asks how many network requests should have a span created for it.

And indeed the sampling works as Head Based sampling, as describe in the documentation you're mentionning. In theory the DeterministicSampler should give you the same sampling on both Android and the Backend, assuming we use the same Deterministic sampling algorithm (our Android implementation uses the same implementation as our Backend Java Agent).

[alecarnevale]

Hi @xgouchet thanks for your reply, that's all clear now.