错误 运行 消费者时出现未知错误:org.apache.kafka.common.errors.SerializationException:未知魔法字节
ERROR Unknown error when running consumer: org.apache.kafka.common.errors.SerializationException: Unknown magic byte
我正在尝试从 python 向 kafka 消费者发送消息。但是出现错误 ERROR Unknown error when running consumer: org.apache.kafka.common.errors.SerializationException: Unknown magic byte!
Python 正在从 Twitter api 正确获取数据,但无法将消息发送给消费者。
任何建议都会有所帮助。
代码:
from tweepy.streaming import StreamListener
from tweepy import OAuthHandler
from tweepy import Stream
from kafka import KafkaProducer
access_token = "xxxx"
access_token_secret = "xxxx"
consumer_key = "xxxx"
consumer_secret = "xxxx"
class StdOutListener(StreamListener):
def on_data(self, data):
producer.send("twitter", data.encode('utf-8'))
print (data)
return True
def on_error(self, status):
print (status)
producer = KafkaProducer(bootstrap_servers='127.0.0.1:9092')
l = StdOutListener()
auth = OAuthHandler(consumer_key, consumer_secret)
auth.set_access_token(access_token, access_token_secret)
stream = Stream(auth, l)
stream.filter(track="Bitcoin")
消费者:
kafka-avro-console-consumer --bootstrap-server 127.0.0.1:9092 --topic twitter
我也试过提供属性,
afka-avro-console-consumer --bootstrap-server 127.0.0.1:9092 --topic twitter --property print.key=true --property print.value=true --value-deserializer io.confluent.kafka.serializers.KafkaAvroDeserializer --key-deserializer org.apache.kafka.common.serialization.StringDeserializer
错误:
[2020-08-14 07:23:52,305] ERROR Unknown error when running consumer: (kafka.tools.ConsoleConsumer$:76)
org.apache.kafka.common.errors.SerializationException: Error deserializing Protobuf message for id -1
Caused by: org.apache.kafka.common.errors.SerializationException: Unknown magic byte!
错误似乎认为它正在获取 Proto 消息
Error deserializing Protobuf message
但是你正在使用 kafka-avro-console-consumer
同时,您的代码正在发送 utf-8 编码的字符串,因此您不需要任何 Confluent 工具,只需 kafka-console-consumer
我正在尝试从 python 向 kafka 消费者发送消息。但是出现错误 ERROR Unknown error when running consumer: org.apache.kafka.common.errors.SerializationException: Unknown magic byte!
Python 正在从 Twitter api 正确获取数据,但无法将消息发送给消费者。
任何建议都会有所帮助。
代码:
from tweepy.streaming import StreamListener
from tweepy import OAuthHandler
from tweepy import Stream
from kafka import KafkaProducer
access_token = "xxxx"
access_token_secret = "xxxx"
consumer_key = "xxxx"
consumer_secret = "xxxx"
class StdOutListener(StreamListener):
def on_data(self, data):
producer.send("twitter", data.encode('utf-8'))
print (data)
return True
def on_error(self, status):
print (status)
producer = KafkaProducer(bootstrap_servers='127.0.0.1:9092')
l = StdOutListener()
auth = OAuthHandler(consumer_key, consumer_secret)
auth.set_access_token(access_token, access_token_secret)
stream = Stream(auth, l)
stream.filter(track="Bitcoin")
消费者:
kafka-avro-console-consumer --bootstrap-server 127.0.0.1:9092 --topic twitter
我也试过提供属性,
afka-avro-console-consumer --bootstrap-server 127.0.0.1:9092 --topic twitter --property print.key=true --property print.value=true --value-deserializer io.confluent.kafka.serializers.KafkaAvroDeserializer --key-deserializer org.apache.kafka.common.serialization.StringDeserializer
错误:
[2020-08-14 07:23:52,305] ERROR Unknown error when running consumer: (kafka.tools.ConsoleConsumer$:76)
org.apache.kafka.common.errors.SerializationException: Error deserializing Protobuf message for id -1
Caused by: org.apache.kafka.common.errors.SerializationException: Unknown magic byte!
错误似乎认为它正在获取 Proto 消息
Error deserializing Protobuf message
但是你正在使用 kafka-avro-console-consumer
同时,您的代码正在发送 utf-8 编码的字符串,因此您不需要任何 Confluent 工具,只需 kafka-console-consumer