template.send("seekExample", i % 3, "some_key", "test#" + i); } ... Result Since callbacks are registered per thread in a single listener class that implements AbstractConsumerSeekAware, seeking offsets is performed regardless of the consumer group ID. (In this case, Listener(id: ...
publicConsumerRecord<String, String>seekAndPoll(String topic,intpartition,longoffset){TopicPartitiontp=newTopicPartition(topic, partition); consumer.assign(Collections.singleton(tp)); System.out.println("assignment:"+ consumer.assignment());// 这里是有分配到分区的consumer.seek(tp, offset); ConsumerRec...
消费者代码KafkaConsumerExample.java: packagecom.bijian.test;importorg.apache.kafka.clients.consumer.ConsumerRecord;importorg.apache.kafka.clients.consumer.ConsumerRecords;importorg.apache.kafka.clients.consumer.KafkaConsumer;importjava.util.Arrays;importjava.util.Properties;publicclassKafkaConsumerExample {public...
Using the .Seek() API to Read the Messages at a Specific Offset The following example code demonstrates how we can use the .seek() API to read the data at a specific offset: import java.util.Arrays; import java.util.Properties; import org.apache.kafka.clients.consumer.ConsumerConfig; impor...
有个需求,需要频繁seek到指定partition的指定offset,然后poll,且只poll一次,目的是为了快速将指定offset的消息拉取出来。 通常的poll写法是,将poll逻辑放在死循环里,第一次拉不到,第二次继续。如果offset上有消息,就一定能消费到: consumer.subscribe("topics"); ...
//e.g 1 :指定offset, 这里需要自己维护offset,方便重试。 Map<Integer, Long>partitionBeginOffsetMap=getPartitionOffset(consumer,topicStr,true); Map<Integer, Long>partitionEndOffsetMap=getPartitionOffset(consumer,topicStr,false); consumer.seek(newTopicPartition(topicStr,0),0); ...
("value.deserializer", "org.apache.kafka.common.serialization.StringDeserializer"); props.put("enable.auto.commit", "true"); props.put("auto.commit.interval.ms", "1000"); // 设置自动提交偏移量的间隔时间,单位毫秒 KafkaConsumer<String, String> consumer = new KafkaConsumer<>(props); consumer...
KafkaConsumer类属于io.vertx.kafka.client.consumer包,在下文中一共展示了KafkaConsumer类的15个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Java代码示例。 示例1: exampleSubscribe
如果您没有提交偏移量并且auto.commit.enable属性为false，那么当mongo调用失败时，您只需等待您认为必要...
#创建消费者,消费消息:/export/servers/kafka_2.11-1.0.0/bin/kafka-console-consumer.sh --bootstrap-server node01:9092,node02:9092,node03:9092 --topic oc_itheima_topic --consumer-property group.id=my-consumer-g --partition 0 --offset 0 ...