[GitHub] [pulsar] bruth opened a new issue #4231: Close blocks if called twice in Go Client

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

bruth opened a new issue #4231: Close blocks if called twice in Go Client
URL: https://github.com/apache/pulsar/issues/4231
 
 
   **Describe the bug**
   Calling `Client.Close()` twice blocks due to the presumably since the underlying [`CloseAsync`](https://github.com/apache/pulsar/blob/master/pulsar-client-go/pulsar/c_producer.go#L287-L291) blocks.
   
   **To Reproduce**
   Initialize a client and call `Close` twice successively. The second call will block indefinitely.
   
   **Expected behavior**
   Subsequent calls to `Close` should be a no-op or at least an error statement the client is already closed.
   
   **Screenshots**
   n/a
   
   **Desktop (please complete the following information):**
    - macOS when using the Go client
    - Linux (the apachepulsar/pulsar Docker image) for the Pulsar server
   
   **Additional context**
   n/a

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