我正在尝试用java实现一个kafka生产者-消费者。下面是片段。我知道这不是一个好的代码(可能会扼杀整个异步的使用),我只想一个手上和测试。
public void publishMessage(RequestFeedback requestFeedback) {
LOGGER.info("Going to push Feedback:{}", requestFeedback);
try {
ProducerRecord<Object, Object> record = new ProducerRecord<>(TOPIC_NAME,
objectMapper.writeValueAsString(requestFeedback));
Future<RecordMetadata> recordMetadataFuture = producer.send(record);
try {
RecordMetadata recordMetadata = recordMetadataFuture.get();
LOGGER.info("Record:{} pushed successfully to Kafka with offset:{}",
record,recordMetadata.offset());
} catch (InterruptedException e) {
e.printStackTrace();
} catch (ExecutionException e) {
e.printStackTrace();
}
} catch (JsonProcessingException e) {
LOGGER.error("Error in converting object:{} into JSON String because of:",
requestFeedback, e);
}
}
日志:
{
"@timestamp": "2017-08-09T15:20:47.839+00:00",
"@version": 1,
"message": "Record:ProducerRecord(topic=FEEDBACK_SENTIMENT, partition=null, key=null, value={\"id\":8,\"instanceId\":7,\"userId\":61,\"userResponseId\":12,\"feedbackText\":\"Hello\"} pushed successfully to Kafka with offset:-1",
"logger_name": "com.kafkaProducer.v3.utils.kafka.FeedbackProducer",
"thread_name": "main",
"level": "INFO",
"level_value": 20000,
"HOSTNAME": "Shubhams-MacBook-Pro.local",
"app_name": "kafkaProducer",
"log_type": "app"
}
问题是偏移量是-1。当我检查消费者日志的偏移量时,情况就不同了。我错过了什么?
暂无答案!
目前还没有任何答案,快来回答吧!