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commit offset in kafka

Anjali Sharma answered on January 31, 2023 Popularity 7/10 Helpfulness 2/10

answer commit offset in kafka

commit offset in kafka

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Committing an offset for a partition is the action of saying that the offset has been processed so that Kafka cluster won't send the committed records for the same partition.

Committed offset is important in case of a consumer recovery or rebalancing (we will learn more about rebalancing in a next tutorial).May 9, 2563 BE

public class ManualConsumer {

    public static void main(String[] args) throws Exception {

        String topicName = "SupplierTopic";
        String groupName = "SupplierTopicGroup";

        Properties props = new Properties();
        props.put("bootstrap.servers", "localhost:9092,localhost:9093");
        props.put("group.id", groupName);
        props.put("key.deserializer", "org.apache.kafka.common.serialization.StringDeserializer");
        props.put("value.deserializer", "SupplierDeserializer");
        props.put("enable.auto.commit", "false");

        KafkaConsumer<String, Supplier> consumer = null;

        try {
            consumer = new KafkaConsumer<>(props);
            consumer.subscribe(Arrays.asList(topicName));

            while (true) {
                ConsumerRecords<String, Supplier> records = consumer.poll(100);
                for (ConsumerRecord<String, Supplier> record : records) {
                    System.out.println("Supplier id= " + String.valueOf(record.value().getID()) +
                            " Supplier  Name = " + record.value().getName() +
                            " Supplier Start Date = " + record.value().getStartDate().toString());
                }
                consumer.commitAsync();
            }
        } catch (Exception ex) {
            ex.printStackTrace();
        } finally {
            consumer.commitSync();
            consumer.close();
        }
    }
}

https://www.learningjournal.guru/courses/kafka/kafka-foundation-training/offset-management/

Popularity 7/10 Helpfulness 2/10 Language java

Source: Grepper

Tags: commit java offset

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Contributed on Jan 31 2023

Anjali Sharma

0 Answers Avg Quality 2/10

commit offset in kafka

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