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我有一个只订阅一个主题的 Kafka 消费者。在某个时间点，正常工作后，我在日志中收到以下消息：

Line 25694: 2017-05-15 17:59:53.656 [INFO ] [MeasureConsumerExecutor] AbstractCoordinator - Attempt to heart beat failed since the group is rebalancing, try to re-join group.
Line 25739: 2017-05-15 18:01:39.745 [INFO ] [MeasureConsumerExecutor] AbstractCoordinator - Marking the coordinator 2147483647 dead.
Line 25740: 2017-05-15 18:01:39.745 [WARN ] [MeasureConsumerExecutor] ConsumerCoordinator - Auto offset commit failed: null
Line 25766: 2017-05-15 18:10:52.539 [INFO ] [MeasureConsumerExecutor] AbstractCoordinator - Marking the coordinator 2147483647 dead.
Line 25789: 2017-05-15 18:25:51.036 [INFO ] [MeasureConsumerExecutor] AbstractCoordinator - Marking the coordinator 2147483647 dead.
Line 25790: 2017-05-15 18:25:52.241 [WARN ] [MeasureConsumerExecutor] ConsumerCoordinator - Auto offset commit failed: null
Line 25796: 2017-05-15 18:31:10.354 [INFO ] [MeasureConsumerExecutor] AbstractCoordinator - Marking the coordinator 2147483647 dead.
Line 25797: 2017-05-15 18:31:24.101 [INFO ] [MeasureConsumerExecutor] EventConsumer - run() - WARN - msg: KafkaConsumer will be CLOSED!

我的代码非常简单：

private final AtomicBoolean closed = new AtomicBoolean(false); ...
...
...
try {   
        while (!closed.get()) {
            ConsumerRecords<String, Message> records = kafkaConsumer.poll(Long.MAX_VALUE);
            for (ConsumerRecord<String, Message> record : records) {
                Message message = record.value();
                messageArrived(message);
            }
        }
        logger.info("run() - NOTIFY - msg: idConsumer = [{}] HAS !closed.get() = [{}]", consumerId, !closed.get());
    } catch (WakeupException wakeupException) {
        logger.error("run() - ERROR - msg: Error on Consumer [{}] caused by = [{}]", getConsumerId(), wakeupException.getMessage(), wakeupException);
        // Ignore exception if closing 
        if (!closed.get()) 
            throw wakeupException;
    } catch (KafkaException kafkaException) {
        logger.error("run() - ERROR - msg: Error on Consumer [" + getConsumerId() + "] caused by = [" + kafkaException.getMessage() + "]", kafkaException);
    } catch (Exception exception) {
        logger.error("run() - ERROR - msg: Error on Consumer [" + getConsumerId() + "] caused by = [" + exception.getMessage() + "]", exception);
    } finally {
        logger.info("run() - WARN - msg: KafkaConsumer will be CLOSED!");
        if (null != kafkaConsumer) {
            kafkaConsumer.close();
        }
    }
}

奇怪的是，我得到了最后一个 WARN 日志（“KafkaConsumer 将被关闭”）而没有进入异常日志（显然没有异常），并且“关闭”变量没有被更改。

我有多个消费者在不同的主题上并行运行，但我认为这不相关。代理位于同一子网中的不同物理机器上。

你能否给我一些关于这里发生的事情的提示以及我如何处理这个问题以防止消费者断开连接或至少能够从中恢复？

提前非常感谢。

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