9092] buffer.memory = 33554432 client.dns.lookup = use_all_dns_ips client.id = producer o.a.kafka.common.utils.AppInfoParser : Kafka startTimeMs: 1630936274181 2021-09-06 21:51:14.190 INFO 20561 --- [ad | producer -2] org.apache.kafka.clients.Metadata : [Producer clientId=producer-2] Cluster ID: R99s2cu-SoWrPuhulozybg 14.192 INFO 20561 --- [nio-7780-exec-3] o.a.k.clients.producer.KafkaProducer : [Producer clientId=producer 20561 --- [nio-7780-exec-3] o.a.kafka.common.utils.AppInfoParser : App info kafka.producer for producer
如果客户端不设置,则 KafkaProducer 会自动生成一个非空字符串,内容形式如“producer-1”、“producer-2”,即字符串“producer-”与数字的拼接。
new Thread(new OrderProducer(), "producer-1").start(); new Thread(new OrderProducer(), "producer
如果客户端不设置, 则 KafkaProducer 会自动生成一个形如“producer-I”、“producer-2” 的字符串。