candyleer commented on issue #1196: Complex span info for AsyncHttpClient and exception URL: https://github.com/apache/incubator-skywalking/issues/1196#issuecomment-387708818 @wu-sheng the work flow of `Async http client` can be drawed as: ![image](https://user-images.githubusercontent.com/11530760/39812286-98832838-53be-11e8-9358-488f5299cc2d.png) there are 3 thread to work ,so it's hard to start the local span in main thread ,the data is transfer by queue but not `new Thread()` directly, so do you have any proposal for this to trace? I can trace `thread-3` ,but it's hard to trace `main` to `thread-3` especially it's based on queue.
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