初始化的主要代码如下：

	config := sarama.NewConfig()
	config.Producer.RequiredAcks = sarama.WaitForAll // Wait for all in-sync replicas to ack the message
	config.Producer.Retry.Max = 10                   // Retry up to 10 times to produce the message
	config.Producer.Return.Successes = true
	config.Producer.Compression = sarama.CompressionSnappy // Compress messages
	config.Producer.Partitioner = sarama.NewRandomPartitioner
	config.Producer.Return.Errors = true
	producer, err := sarama.NewSyncProducer(brokerList, config)
	if err != nil {
		log.Printf("sarama.NewSyncProducer fail:%+v\n", err)
		return err
	}

生产消息的主要代码如下：

	msg := sarama.ProducerMessage{
		Topic: monitorInstance.topic,
		Value: sarama.StringEncoder(resportString),
		//Key: sarama.StringEncoder("monitor_data"),
	}
	partition, offset, err := (*producer).SendMessage(&msg)
	if err != nil {
		log.Printf("kafka SendMessage fail:%+v\n", err)
		return
	}
	log.Printf("Your data is stored with unique identifier important/%d/%d\n", partition, offset)

尝试了以下办法都不行：
1.把producer从async修改为sync
2.增加msg中的key
3.尝试更换topic

最后发现是这个问题：
config.Producer.Compression = sarama.CompressionSnappy
注释掉这一行后正常。

难道就不能加压缩？问了腾讯云的工程师，得到了解决：
config.Version = sarama.V2_1_0_0
config.Producer.Compression = sarama.CompressionSnappy