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Posted to commits@pulsar.apache.org by "zhangbiao2009 (via GitHub)" <gi...@apache.org> on 2024/09/25 17:45:21 UTC

[I] Got " Failed to create consumer at reconnect" when stop pulsar broker first and restart it later [pulsar-client-go]

zhangbiao2009 opened a new issue, #1290:
URL: https://github.com/apache/pulsar-client-go/issues/1290

   #### Expected behavior
   
   Expect no error happens.
   
   #### Actual behavior
   
   <img width="1631" alt="image" src="https://github.com/user-attachments/assets/0fc0f71e-c433-4cc7-81af-99d5e8ed9928">
   
   #### Steps to reproduce
   
   1. run the go example program
   2. stop pulsar broker
   3. observe the output of go example, start pulsar broker **after** you see this error message: `error="dial tcp [::1]:6650: connect: connection refused" remote_addr="pulsar://localhost:6650"`
   4. you can see the `Failed to create consumer at reconnect` now.
   
   program example to reproduce:
   
   ```
   package main
   
   import (
   	"context"
   	"fmt"
   	"log"
   
   	"net/http"
   	_ "net/http/pprof"
   
   	"github.com/apache/pulsar-client-go/pulsar"
   )
   
   func main() {
   
   	go func() {
   		log.Println(http.ListenAndServe("localhost:6060", nil))
   	}()
   
   	// Create a Pulsar client
   	client, err := pulsar.NewClient(pulsar.ClientOptions{
   		URL: "pulsar://localhost:6650",
   	})
   	if err != nil {
   		log.Fatalf("Could not create Pulsar client: %v", err)
   	}
   	defer client.Close()
   
   	consumer, err := client.Subscribe(pulsar.ConsumerOptions{
   		Topic:            "my-topic",
   		SubscriptionName: "my-subscription",
   		Type:             pulsar.KeyShared,
   	})
   	if err != nil {
   		fmt.Printf("Could not create consumer: %v\n", err)
   		return
   	}
   	go func() {
   		for {
   			msg, err := consumer.Receive(context.Background())
   			if err != nil {
   				log.Printf("Error receiving message: %v", err)
   				break
   			}
   
   			// Process the message
   			fmt.Printf("Received message msgId: %v -- content: '%s'\n",
   				msg.ID(), string(msg.Payload()))
   
   			// Acknowledge the message
   			consumer.Ack(msg)
   		}
   	}()
   
   	// Keep the main function alive to allow the goroutine to run
   	select {}
   }
   
   ```
   
   #### System configuration
   Macbook Pro 2021
   pulsar go sdk version: 0.13.1

   pulsar broker version: latest docker image. I run it with this command:
   `docker run -it \
       -p 6650:6650 \
       -p 8080:8080 \
       apachepulsar/pulsar:latest \
       bin/pulsar standalone`
   
   
   


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