Fix agent start failed in async mode when profiling is enabled (#360)

Author: tsonglew

CHANGELOG.md

@@ -11,6 +11,7 @@
   - Fix pulsar client does not support init arguments other than service_url (#351)
   - Fix outdated make dev-fix rule in CodeStyle.md (#350)
   - Fix TestClient for fastapi cause the req.client None error (#355)
+  - Fix agent start failed in async mode when profiling is enabled (#360)
 
 ### 1.1.0
 

skywalking/command/command_service.py

@@ -68,11 +68,11 @@ def receive_command(self, commands: Commands):
 class CommandServiceAsync:
 
     def __init__(self):
-        self._commands = AsyncQueue()  # type: AsyncQueue
         # don't execute same command twice
         self._command_serial_number_cache = CommandSerialNumberCache()
 
     async def dispatch(self):
+        self._commands = AsyncQueue()  # type: AsyncQueue
         while True:
             # block until a command is available
             command = await self._commands.get()  # type: BaseCommand