我正在使用Kafka Stream库进行流应用程序。我想设置kafka消费者组ID。然后，我将Kafka流配置如下所示。
streamsCopnfiguration.put(StreamsConfig.APPLICATION_ID_CONFIG, "JoinTestApp");
streamsCopnfiguration.put(StreamsConfig.CLIENT_ID_CONFIG, "JonTestClientId1");
streamsCopnfiguration.put(StreamsConfig.COMMIT_INTERVAL_MS_CONFIG, 10 * 1000);
streamsCopnfiguration.put(StreamsConfig.BOOTSTRAP_SERVERS_CONFIG, bootstreapServer);
streamsCopnfiguration.put(StreamsConfig.DEFAULT_KEY_SERDE_CLASS_CONFIG, Serdes.String().getClass().getName());
streamsCopnfiguration.put(StreamsConfig.DEFAULT_VALUE_SERDE_CLASS_CONFIG, Serdes.Bytes().getClass().getName());
streamsCopnfiguration.put(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, "earliest");
streamsCopnfiguration.put(StreamsConfig.consumerPrefix("group.id"), "groupId1");
// streamsCopnfiguration.put(ConsumerConfig.GROUP_ID_CONFIG, "groupId1");
但是，我的控制台日志kafka使用者配置未设置group.id。只需流应用ID。
2019-03-19 17:17:03,206 [main] INFO org.apache.kafka.clients.consumer.ConsumerConfig - ConsumerConfig values:
auto.commit.interval.ms = 5000
auto.offset.reset = earliest
bootstrap.servers = [....]
check.crcs = true
client.dns.lookup = default
client.id = JonTestClientId111-StreamThread-1-consumer
connections.max.idle.ms = 540000
default.api.timeout.ms = 60000
enable.auto.commit = false
exclude.internal.topics = true
fetch.max.bytes = 52428800
fetch.max.wait.ms = 500
fetch.min.bytes = 1
group.id = JoinTestApp
heartbeat.interval.ms = 3000
interceptor.classes = [] …