feat: don't use opentelemetry async trace exporter (#2576)

Co-authored-by: kodiakhq[bot] <49736102+kodiakhq[bot]@users.noreply.github.com>

Cargo.lock

@@ -2656,8 +2656,6 @@ dependencies = [
  "pin-project",
  "rand 0.8.4",
  "thiserror",
- "tokio",
- "tokio-stream",
 ]
 
 [[package]]
@@ -2672,7 +2670,6 @@ dependencies = [
  "opentelemetry-semantic-conventions",
  "thiserror",
  "thrift",
- "tokio",
 ]
 
 [[package]]

trace_exporters/Cargo.toml

@@ -11,8 +11,8 @@ async-trait = "0.1"
 chrono = { version = "0.4" }
 futures = "0.3"
 observability_deps = { path = "../observability_deps" }
-opentelemetry = { version = "0.16", features = ["rt-tokio"] }
-opentelemetry-jaeger = { version = "0.15", optional = true, features = ["rt-tokio"] }
+opentelemetry = { version = "0.16" }
+opentelemetry-jaeger = { version = "0.15", optional = true }
 snafu = "0.6"
 structopt = { version = "0.3.23" }
 tokio = { version = "1.11", features = ["macros", "time", "sync", "rt"] }

trace_exporters/src/lib.rs

@@ -124,7 +124,7 @@ fn jaeger_exporter(config: &TracingConfig) -> Result<Arc<dyn TraceCollector>> {
     let exporter = opentelemetry_jaeger::new_pipeline()
         .with_agent_endpoint(agent_endpoint)
         .with_service_name(&config.traces_exporter_jaeger_service_name)
-        .init_async_exporter(opentelemetry::runtime::Tokio {})
+        .init_sync_exporter()
         .map_err(|source| Error::TraceExporter { source })?;
 
     Ok(Arc::new(otel::OtelExporter::new(exporter)))