wdengw commented on issue #886: Got IllegalArgumentExceptions when calling SpanBuilder.asChildOf() URL: https://github.com/apache/incubator-skywalking/issues/886#issuecomment-370829788 The fix does eliminated the exception. Traces are record and shown on UI. But the traces are not able go across distributed services, it only work for local traces. I am curious that the {code} public <C> SpanContext extract(Format<C> format, C carrier) { return new SkywalkingContext(); } {code} Doesn't take any information form the carrier to create the context. The OpenTracing API spec expect that, for HTTP request, HTTP headers are used to pass TraceContext across machines. How does Skywalking manage to pass TraceContext between remote services?
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