python - 使用Python阅读特定的Kafka主题

我有3个分区的主题，我正在尝试使用以下代码从每个特定分区中读取

from kafka import KafkaConsumer, TopicPartition

brokers = 'localhost:9092'
topic = 'b3'

m = KafkaConsumer(topic, bootstrap_servers=['localhost:9092'])
par = TopicPartition(topic=topic, partition=1)
m.assign(par)

但我收到此错误：

    raise IllegalStateError(self._SUBSCRIPTION_EXCEPTION_MESSAGE)
kafka.errors.IllegalStateError: IllegalStateError: You must choose only one way to configure your consumer: (1) subscribe to specific topics by name, (2) subscribe to topics matching a regex pattern, (3) assign itself specific topic-partitions.

有人可以帮我吗？

最佳答案

您可以从KafkaConsumer（）中删除topic参数，然后重试吗？

例：

# manually assign the partition list for the consumer
from kafka import TopicPartition, KafkaConsumer
consumer = KafkaConsumer(bootstrap_servers='localhost:1234')
consumer.assign([TopicPartition('foobar', 2)])
msg = next(consumer)

参考：http://kafka-python.readthedocs.io/en/master/