wolfstudy opened a new issue #553:
URL: https://github.com/apache/pulsar-client-go/issues/553
**Describe the bug**
A clear and concise description of what the bug is.
**To Reproduce**
```
package main
import (
"context"
"fmt"
"log"
"github.com/apache/pulsar-client-go/pulsar"
)
func main() {
client, err := pulsar.NewClient(pulsar.ClientOptions{
URL: "pulsar://localhost:6000",
ListenerName: "custom:xxxx/vpc-xxxxxx/subnet-xxxxxx",
Authentication:
pulsar.NewAuthenticationToken("eyJrZxxxxxxxxxxx"),
})
if err != nil {
log.Fatal(err)
}
defer client.Close()
reader, err := client.CreateReader(pulsar.ReaderOptions{
Topic: "persistent://test-tenant/test-ns/test-topic",
StartMessageID: pulsar.EarliestMessageID(),
})
if err != nil {
log.Fatal(err)
}
defer reader.Close()
for reader.HasNext() {
msg, err := reader.Next(context.Background())
if err != nil {
log.Fatal(err)
}
fmt.Printf("Received message msgId: %#v -- content: '%s'\n",
msg.ID(), string(msg.Payload()))
}
}
```
**Expected behavior**
We can create the reader successfully
**Screenshots**
<img width="1271" alt="bdcb83d8-758d-4545-91f8-3ba1ac7685a7"
src="https://user-images.githubusercontent.com/20965307/123574245-15127f00-d802-11eb-88c7-8190742154df.png";>
**Desktop (please complete the following information):**
- OS: Mac OS
- Go Version: master
---
But this topic already exists, it is normal to use producer or consumer
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