[GitHub] [couchdb] iilyak commented on issue #2934: OpenTracing being sunset for OpenTelemetry

[GitBox <gi...@apache.org>]

iilyak commented on issue #2934:
URL: https://github.com/apache/couchdb/issues/2934#issuecomment-641431616


   Few points which would probably make https://github.com/open-telemetry/opentelemetry-erlang-api unsuitable for us:
   - it looks like it uses `gen_server` based backend for storing spans. This would be prohibitively slow for our case. 
   - it uses `persistent_term` feature which was introduced in OTP 21.2. 
   - Requires OTP 21.3 or above.
   - the https://github.com/opentelemetry-beam/opentelemetry_exporter uses chatterbox and we know it is buggy https://github.com/joedevivo/chatterbox/issues/136 (we had to remove GRPC support for that reason from `couch_eval` and `ateles`)
     - there might be a way to disable GRPC by using `http_protobuf` configuration option
   - the https://github.com/opentelemetry-beam/opentelemetry_exporter making assumption about which http client to use (it is using httpc) and we might want to plug ibrowse. I am not sure if it is currently possible.


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