kafka-python raise kafka.errors.ConsumerFetchSizeTooSmall

Question

我正在写一个简单的代码在Python 2.7中消耗apache kafka主题的消息。代码如下：

from kafka import SimpleConsumer,KafkaClient 
group = "my_group_test" 
client = KafkaClient('localhost:9092') 
cons = SimpleConsumer(client, group, "my_topic") 
messages = cons.get_messages(count=1000,block=False) 

不过是提高此异常：

Traceback (most recent call last): 
    File "<stdin>", line 1, in <module> 
    File "/usr/local/lib/python2.7/dist-packages/kafka/consumer/simple.py", line 285, in get_messages 
    update_offset=False) 
    File "/usr/local/lib/python2.7/dist-packages/kafka/consumer/simple.py", line 320, in _get_message 
    self._fetch() 
    File "/usr/local/lib/python2.7/dist-packages/kafka/consumer/simple.py", line 425, in _fetch 
    raise ConsumerFetchSizeTooSmall() 
kafka.errors.ConsumerFetchSizeTooSmall 

我怎么可能为了使此代码工作修改此参数（ConsumerFetchSize）？

Answer 1

我找到了一个解决方案， 使用SimpleConsumer中的参数max_buffer_size。

工作代码为：

#the size is adherent with my need but is totally arbitrary 
cons = SimpleConsumer(client, group, "my_topic",max_buffer_size=9932768)