celery配合redis出现redis.exceptions.InvalidResponse Protocol Error
说明
celery+redis实现异步任务，如果涉及到频繁的io调用，可能会出现错误redis.exceptions.InvalidResponse: Protocol Error
错误内容
redis.exceptions.InvalidResponse: Protocol Error: {, b'\"status\": \"SUCCESS\", \"result\":xxxx \"traceback\": null, \"children\": [], \"date_done\": \"2020-06-04T07:47:38.317661\", \"task_id\": \"fd4e4fa1-f8cc-4083-a287-ac2b7c7d4472\"}'\r\n"
查看redis源码
#connection.py
def read_response(self):
response = self._buffer.readline()
if not response:
raise ConnectionError(SERVER_CLOSED_CONNECTION_ERROR)
byte, response = byte_to_chr(response[0]), response[1:]
# 从redis源码中可以看出，通信的数据格式不对
if byte not in ('-', '+', ':', '$', '*'):
raise InvalidResponse("Protocol Error: %s, %s" %
(str(byte), str(response)))
原因
从redis源码中可以看出，通信的数据格式不对.
具体为什么会格式不会, 猜测可能是celery使用了pipeline, socket重连之后，数据格式发生变化
解决办法
使用evenetlet进行改造，解决socket问题
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