afire007 edited a comment on issue #6712: Pulsar Go Client Producer 2.4.1, 
2.4.2 does not round robin messages by default when sending messages to multi 
partitioned topics
URL: https://github.com/apache/pulsar/issues/6712#issuecomment-612936403
 
 
   @sijie We are not sending any message keys when producing to the partitioned 
topic.  Below is the configuration we are using when sending data to the 
broker.  This applies to both non-persistent and persistent topics
   
   ```
   client, err := pulsar.NewClient(pulsar.ClientOptions{
                URL: pulsarBroker,
                Authentication: tls_auth,
                TLSTrustCertsFilePath: pulsarSslCACertFile,
                TLSAllowInsecureConnection: TLSAllowInsecureConnection,
                TLSValidateHostname : TLSValidateHostname,
                MessageListenerThreads: 1,
                IOThreads: 1,
        })
   
        producer, err := client.CreateProducer(pulsar.ProducerOptions{
                Topic: pulsarTopic,
                CompressionType: pulsar.LZ4,
                BatchingMaxMessages: uint(10000),
                Batching: true,
                MaxPendingMessages: 10000,
                MessageRoutingMode: pulsar.RoundRobinDistribution,
                BlockIfQueueFull: true,
                BatchingMaxPublishDelay: time.Duration(1)*time.Millisecond,
        })
   ```
   
   ```
   //Send Message Sync to Broker
   msg := pulsar.ProducerMessage{
                            Payload: metric, //Metric is a byte[]
                        }
   err := producer.Send(context.Background(), msg)
   ```
   

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