mysql.connector.errors.InterfaceError：解析EOF數據包失敗

Question

我在運行我的Django項目時遇到了這樣的問題（一週前，項目正常工作，今天發現這個問題）： 我的Django版本是1.10.2 python版本3.5.2，ubuntu 14.0上的MySQL版本是5.5。

/Users/deja/Virtualenv/python3.5/bin/python3.5 /Applications/PyCharm.app/Contents/helpers/pydev/pydevd.py --multiproc --qt-support --client 127.0.0.1 --port 60850 --file /Users/mozat/project/crawler_management_system/manage.py runserver 0.0.0.0:6380 
pydev debugger: process 81527 is connecting 

Connected to pydev debugger (build 145.1504) 
pydev debugger: process 81528 is connecting 

Performing system checks... 

System check identified no issues (0 silenced). 

You have 13 unapplied migration(s). Your project may not work properly until you apply the migrations for app(s): admin, auth, contenttypes, sessions. 
Run 'python manage.py migrate' to apply them. 
January 03, 2017 - 07:55:47 
Django version 1.10.2, using settings 'crawler_management_system.settings' 
Starting development server at http://0.0.0.0:6380/ 
Quit the server with CONTROL-C. 
Internal Server Error:/
Traceback (most recent call last): 
    File "/Users/deja/Virtualenv/python3.5/lib/python3.5/site-packages/mysql/connector/network.py", line 226, in recv_plain 
    chunk = self.sock.recv(4 - packet_len) 
socket.timeout: timed out 

During handling of the above exception, another exception occurred: 

Traceback (most recent call last): 
    File "/Users/mozat/project/crawler_management_system/crawler_management_system/mysql_utility.py", line 32, in open_db 
    raise err 
    File "/Users/mozat/project/crawler_management_system/crawler_management_system/mysql_utility.py", line 28, in open_db 
    yield cursor 
    File "/Users/mozat/project/crawler_management_system/crawler_management_system/views.py", line 40, in select_batch_records 
    cursor.execute(sql.format(table=self.table,times=times)) 
    File "/Users/deja/Virtualenv/python3.5/lib/python3.5/site-packages/mysql/connector/cursor.py", line 515, in execute 
    self._handle_result(self._connection.cmd_query(stmt)) 
    File "/Users/deja/Virtualenv/python3.5/lib/python3.5/site-packages/mysql/connector/connection.py", line 488, in cmd_query 
    result = self._handle_result(self._send_cmd(ServerCmd.QUERY, query)) 
    File "/Users/deja/Virtualenv/python3.5/lib/python3.5/site-packages/mysql/connector/connection.py", line 267, in _send_cmd 
    return self._socket.recv() 
    File "/Users/deja/Virtualenv/python3.5/lib/python3.5/site-packages/mysql/connector/network.py", line 255, in recv_plain 
    errno=2055, values=(self.get_address(), _strioerror(err))) 
mysql.connector.errors.OperationalError: 2055: Lost connection to MySQL server at '127.0.0.1:10189', system error: timed out 

During handling of the above exception, another exception occurred: 

Traceback (most recent call last): 
    File "/Users/deja/Virtualenv/python3.5/lib/python3.5/site-packages/mysql/connector/connection.py", line 710, in reset_session 
    self.cmd_reset_connection() 
    File "/Users/deja/Virtualenv/python3.5/lib/python3.5/site-packages/mysql/connector/connection.py", line 1046, in cmd_reset_connection 
    raise errors.NotSupportedError("MySQL version 5.7.2 and " 
mysql.connector.errors.NotSupportedError: MySQL version 5.7.2 and earlier does not support COM_RESET_CONNECTION. 

During handling of the above exception, another exception occurred: 

Traceback (most recent call last): 
    File "/Users/deja/Virtualenv/python3.5/lib/python3.5/site-packages/mysql/connector/protocol.py", line 267, in parse_eof 
    unpacked = struct_unpack('<xxxBBHH', packet) 
struct.error: unpack requires a bytes object of length 9 

During handling of the above exception, another exception occurred: 

Traceback (most recent call last): 
    File "/Users/deja/Virtualenv/python3.5/lib/python3.5/site-packages/django/core/handlers/exception.py", line 39, in inner 
    response = get_response(request) 
    File "/Users/deja/Virtualenv/python3.5/lib/python3.5/site-packages/django/core/handlers/base.py", line 249, in _legacy_get_response 
    response = self._get_response(request) 
    File "/Users/deja/Virtualenv/python3.5/lib/python3.5/site-packages/django/core/handlers/base.py", line 187, in _get_response 
    response = self.process_exception_by_middleware(e, request) 
    File "/Users/deja/Virtualenv/python3.5/lib/python3.5/site-packages/django/core/handlers/base.py", line 185, in _get_response 
    response = wrapped_callback(request, *callback_args, **callback_kwargs) 
    File "/Users/mozat/project/crawler_management_system/crawler_management_system/views.py", line 99, in mainpage 
    result = batch_record_repo.select_batch_records(times) 
    File "/Users/mozat/project/crawler_management_system/crawler_management_system/views.py", line 41, in select_batch_records 
    return cursor.fetchall() 
    File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/contextlib.py", line 77, in __exit__ 
    self.gen.throw(type, value, traceback) 
    File "/Users/mozat/project/crawler_management_system/crawler_management_system/mysql_utility.py", line 40, in open_db 
    connection.close() 
    File "/Users/deja/Virtualenv/python3.5/lib/python3.5/site-packages/mysql/connector/pooling.py", line 117, in close 
    cnx.reset_session() 
    File "/Users/deja/Virtualenv/python3.5/lib/python3.5/site-packages/mysql/connector/connection.py", line 713, in reset_session 
    self._database, self._charset_id) 
    File "/Users/deja/Virtualenv/python3.5/lib/python3.5/site-packages/mysql/connector/connection.py", line 661, in cmd_change_user 
    self._post_connection() 
    File "/Users/deja/Virtualenv/python3.5/lib/python3.5/site-packages/mysql/connector/abstracts.py", line 695, in _post_connection 
    self.set_charset_collation(self._charset_id) 
    File "/Users/deja/Virtualenv/python3.5/lib/python3.5/site-packages/mysql/connector/abstracts.py", line 654, in set_charset_collation 
    charset_name, collation_name)) 
    File "/Users/deja/Virtualenv/python3.5/lib/python3.5/site-packages/mysql/connector/connection.py", line 869, in _execute_query 
    self.cmd_query(query) 
    File "/Users/deja/Virtualenv/python3.5/lib/python3.5/site-packages/mysql/connector/connection.py", line 488, in cmd_query 
    result = self._handle_result(self._send_cmd(ServerCmd.QUERY, query)) 
    File "/Users/deja/Virtualenv/python3.5/lib/python3.5/site-packages/mysql/connector/connection.py", line 393, in _handle_result 
    return self._handle_eof(packet) 
    File "/Users/deja/Virtualenv/python3.5/lib/python3.5/site-packages/mysql/connector/connection.py", line 344, in _handle_eof 
    eof = self._protocol.parse_eof(packet) 
    File "/Users/deja/Virtualenv/python3.5/lib/python3.5/site-packages/mysql/connector/protocol.py", line 269, in parse_eof 
    raise errors.InterfaceError(err_msg) 
mysql.connector.errors.InterfaceError: Failed parsing EOF packet. 
[03/Jan/2017 07:56:40] "GET/HTTP/1.1" 500 172448 

有人碰巧看到同樣的問題？能否請您給我一些建議。

Answer 1

所有，沒有錯誤的MySQL和Django。這是因爲我使用複雜的SQL來訪問MySQL：

  SELECT * 
       FROM 
       (SELECT *, 
        @batch_rank := IF(@current_batch = spider , @batch_rank + 1, 1) AS batch_rank, 
        @current_batch := spider 
       FROM deja_crawler.crawl_batch_record 
       where spider in (select distinct spider from deja_crawler.crawl_batch_record where spider like '%_new' or spider like '%_update') 
       ORDER BY spider, create_time DESC) 
       ranked 
      WHERE batch_rank <= 3 

以前有沒有太多的數據，所以它的工作原理，後來，表變得巨大，並且訪問時間成本幾乎是30多歲，但表連接超時設置爲20秒，因此會導致超時錯誤。