codelipenghui commented on issue #6730:
URL: https://github.com/apache/skywalking/issues/6730#issuecomment-817768403
@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);
```
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