由Peerpymongo重置连接

我有一些文件,我必须从mongodb获取并将其设置为memcache.这是代码

import memcache
from pymongo import MongoClient

db = mongo_client.job_db.JobParsedData
jobs = db.find().sort("JobId", 1)

def set_to_memcache_raw(jobs):
    print("Setting raw message to memcache")
    count = 0
    for item in jobs:
        job_id = item.get('JobId')
        job_details = item.get('JobDetails')
        if job_id.strip():
            count += 1
            memcache_obj.set(job_id, job_details, time=72000)
            if count % 1000 == 0:
                print("Inserted {} keys in memcache".format(count))
            if count >= 1000000:
                break

但是,经过一些奇数次的迭代,代码抛出了这个错误 -

 Traceback (most recent call last):
  File "/home/dimension/.virtualenvs/docparser/lib/python3.5/site-packages/pymongo/pool.py", line 450, in receive_message
    self.sock, operation, request_id, self.max_message_size)
  File "/home/dimension/.virtualenvs/docparser/lib/python3.5/site-packages/pymongo/network.py", line 137, in receive_message
    header = _receive_data_on_socket(sock, 16)
  File "/home/dimension/.virtualenvs/docparser/lib/python3.5/site-packages/pymongo/network.py", line 164, in _receive_data_on_socket
    chunk = sock.recv(length)
ConnectionResetError: [Errno 104] Connection reset by peer

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "memcache-poc.py", line 56, in 
    elapsed = time.time() - t0
  File "memcache-poc.py", line 52, in main
    jobs = db.find(query)
  File "memcache-poc.py", line 17, in set_to_memcache_raw
    print("Setting raw message to memcache")
  File "/home/dimension/.virtualenvs/docparser/lib/python3.5/site-packages/pymongo/cursor.py", line 1114, in next
    if len(self.__data) or self._refresh():
  File "/home/dimension/.virtualenvs/docparser/lib/python3.5/site-packages/pymongo/cursor.py", line 1056, in _refresh
    self.__max_await_time_ms))
  File "/home/dimension/.virtualenvs/docparser/lib/python3.5/site-packages/pymongo/cursor.py", line 873, in __send_message
    **kwargs)
  File "/home/dimension/.virtualenvs/docparser/lib/python3.5/site-packages/pymongo/mongo_client.py", line 905, in _send_message_with_response
    exhaust)
  File "/home/dimension/.virtualenvs/docparser/lib/python3.5/site-packages/pymongo/mongo_client.py", line 916, in _reset_on_error
    return func(*args, **kwargs)
  File "/home/dimension/.virtualenvs/docparser/lib/python3.5/site-packages/pymongo/server.py", line 136, in send_message_with_response
    response_data = sock_info.receive_message(1, request_id)
  File "/home/dimension/.virtualenvs/docparser/lib/python3.5/site-packages/pymongo/pool.py", line 452, in receive_message
    self._raise_connection_failure(error)
  File "/home/dimension/.virtualenvs/docparser/lib/python3.5/site-packages/pymongo/pool.py", line 550, in _raise_connection_failure
    _raise_connection_failure(self.address, error)
  File "/home/dimension/.virtualenvs/docparser/lib/python3.5/site-packages/pymongo/pool.py", line 211, in _raise_connection_failure
    raise AutoReconnect(msg)
pymongo.errors.AutoReconnect: xxx.xxx.xxx.xxx:27017: [Errno 104] Connection reset by peer

我已经通过了诸如此类的链接

pymongo-错误

mongodb-TCP keep-alive

为什么此结果pymongo掷,autoReconnect的

它们不是上面代码中的套接字不活动的问题,因为我的jobs对象是一个迭代器,并且每次在这个对象上调用next()它将获取下一个文件(来自mongo本身)

我在Azure云上安装了mongodb,我的TCP保持活动为7200秒.我通过触发此命令获得此数字

sysctl net.ipv4.tcp_keepalive_time
7200

在这种情况下,在for循环上尝试cacth块有帮助

根据下面对从问题的信息pymongo的API文档在这里,除了需要手动处理.

exception pymongo.errors.AutoReconnect(message='', errors=None)

在与数据库的连接丢失并尝试自动重新连接时引发.

为了自动重新连接,您必须处理此异常,并认识到导致它的操作未必成功.将来的操作将尝试打开与数据库的新连接(并将继续引发此异常,直到第一次成功建立连接).

我搜索了一些现有的解决方案,请看下面的内容.

这里的代码片段用于优雅地处理PyMongo AutoReconnect异常.

使用名为MongoDBProxy自动处理AutoReconnect异常的中间件.

希望能帮助到你.