kafka生产阻塞

kafka 消费比生产慢，生产一停，消费也停，说明数据没有进到kafka，那么在哪呢？

只可能在缓存里，阻塞了

import os
from pykafka import KafkaClient

import json
import base64
import logging
import time

# import logging as log
# log.basicConfig(level=log.DEBUG)
import datetime

host2='192.168.00.00:9092,192.168.00.01:9092'
class Kafka_client():
    def __init__(self,f_log):
        client = KafkaClient(hosts=host)

        print("conn kfaka ok")
        # self.topic = client.topics[b'ccat']
        self.topic = client.topics[b'test2']
        self.producer = self.topic.get_sync_producer(block_on_queue_full=False)
        self.producer.start()

    def send(self,data):
        # if self.index >=0:
        self.producer.produce(data)
        log_time = datetime.datetime.now().strftime('%m%d_%H%M%S')

        pass

    def stop(self):
        self.producer.stop()
        pass


if __name__ == '__main__':
    kafka=Kafka_client()
    # kafka.run()

    path=r"D:\data\Images/"
    files = os.listdir(path)
    index=0
    for file in files:
        img = open(path+file, 'rb')
        image_data = img.read()
        base64_data = base64.b64encode(image_data)
        kafka.send(base64_data)
        index+=1
        print(str(index))
        if index>2000:
            break
    kafka.stop()