[GitHub] [skywalking] wallezhang edited a comment on issue #6730: pulsar plugin breaks trace on the consumer size

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

wallezhang edited a comment on issue #6730:
URL: https://github.com/apache/skywalking/issues/6730#issuecomment-818381991


   > @wallezhang Seems the problem is related to passing the span across threads. Have you tried to get the `ContextCarrier` from the properties of the message?
   > 
   > ```
   > ContextCarrier carrier = new ContextCarrier();
   >             CarrierItem next = carrier.items();
   >             while (next.hasNext()) {
   >                 next = next.next();
   >                 next.setHeadValue(msg.getProperty(next.getHeadKey()));
   >             }
   > ```
   > 
   > Then you can use the carrier to create a span or other operations
   > 
   > ```
   > ContextManager.createEntrySpan(<operationName>, carrier);
   > ```
   
   Why not pass the span in the message across the thread? E.g. enhance the `callMessageListener` method, which is already in the listener thread, so that we can directly pass the span in the message


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