Intermittent: pymysql.err.InternalError: Packet sequence number wrong - got 102 expected 77
|Hi list, sometimes I get the following error in mailman core's log: "pymysql.err.InternalError: Packet sequence number wrong - got 102 expected 77". I attached the full log after this mail. I check the provided link in the log (|||http://sqlalche.me/e/2j85|) and also searched for it on the internet and found the following possible reasons: 1. DB user does not have permissions at all -> I doubt that, because in general mailman is working ok 2. DB user is not allowed to connect from remote -> I doubt that too, because everything is on one host and DB user is allowed to connect from localhost 3. Multi-Threading -> pymysql is mentioned to be not thread-safe and each thread needs its own connection May this be caused by multi-threading? What do I have to do (is there anything I can do?) to solve this on my own?|||||
Kind regards Torge
||
|Full log follows: [2021-05-23 07:31:45 +0200] [8244] [ERROR] Error handling request /3.1/lists?advertised=true&count=10&page=1 Traceback (most recent call last): File "/opt/mailman/core/venv/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 1284, in _execute_context cursor, statement, parameters, context File "/opt/mailman/core/venv/lib/python3.6/site-packages/sqlalchemy/engine/default.py", line 590, in do_execute cursor.execute(statement, parameters) File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/cursors.py", line 170, in execute result = self._query(query) File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/cursors.py", line 328, in _query conn.query(q) File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/connections.py", line 517, in query self._affected_rows = self._read_query_result(unbuffered=unbuffered) File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/connections.py", line 732, in _read_query_result result.read() File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/connections.py", line 1082, in read self._read_result_packet(first_packet) File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/connections.py", line 1151, in _read_result_packet self._get_descriptions() File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/connections.py", line 1222, in _get_descriptions field = self.connection._read_packet(FieldDescriptorPacket) File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/connections.py", line 671, in _read_packet % (packet_number, self._next_seq_id)) pymysql.err.InternalError: Packet sequence number wrong - got 102 expected 77 The above exception was the direct cause of the following exception: Traceback (most recent call last): File "/opt/mailman/core/venv/lib/python3.6/site-packages/mailman/database/transaction.py", line 50, in wrapper rtn = function(*args, **kws) File "/opt/mailman/core/venv/lib/python3.6/site-packages/mailman/rest/wsgiapp.py", line 193, in __call__ return super().__call__(environ, start_response) File "falcon/api.py", line 274, in falcon.api.API.__call__ File "falcon/api.py", line 269, in falcon.api.API.__call__ File "/opt/mailman/core/venv/lib/python3.6/site-packages/mailman/rest/lists.py", line 322, in on_get resource = self._make_collection(request) File "/opt/mailman/core/venv/lib/python3.6/site-packages/mailman/rest/helpers.py", line 172, in _make_collection request, self._get_collection(request)) File "/opt/mailman/core/venv/lib/python3.6/site-packages/mailman/rest/helpers.py", line 167, in _paginate return list_start, total_size, collection[list_start:list_end] File "/opt/mailman/core/venv/lib/python3.6/site-packages/mailman/utilities/queries.py", line 42, in __getitem__ return self._query[index] File "/opt/mailman/core/venv/lib/python3.6/site-packages/sqlalchemy/orm/query.py", line 3149, in __getitem__ return list(res) File "/opt/mailman/core/venv/lib/python3.6/site-packages/sqlalchemy/orm/query.py", line 3481, in __iter__ return self._execute_and_instances(context) File "/opt/mailman/core/venv/lib/python3.6/site-packages/sqlalchemy/orm/query.py", line 3506, in _execute_and_instances result = conn.execute(querycontext.statement, self._params) File "/opt/mailman/core/venv/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 1020, in execute return meth(self, multiparams, params) File "/opt/mailman/core/venv/lib/python3.6/site-packages/sqlalchemy/sql/elements.py", line 298, in _execute_on_connection return connection._execute_clauseelement(self, multiparams, params) File "/opt/mailman/core/venv/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 1139, in _execute_clauseelement distilled_params, File "/opt/mailman/core/venv/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 1324, in _execute_context e, statement, parameters, cursor, context File "/opt/mailman/core/venv/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 1518, in _handle_dbapi_exception sqlalchemy_exception, with_traceback=exc_info[2], from_=e File "/opt/mailman/core/venv/lib/python3.6/site-packages/sqlalchemy/util/compat.py", line 178, in raise_ raise exception File "/opt/mailman/core/venv/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 1284, in _execute_context cursor, statement, parameters, context File "/opt/mailman/core/venv/lib/python3.6/site-packages/sqlalchemy/engine/default.py", line 590, in do_execute cursor.execute(statement, parameters) File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/cursors.py", line 170, in execute result = self._query(query) File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/cursors.py", line 328, in _query conn.query(q) File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/connections.py", line 517, in query self._affected_rows = self._read_query_result(unbuffered=unbuffered) File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/connections.py", line 732, in _read_query_result result.read() File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/connections.py", line 1082, in read self._read_result_packet(first_packet) File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/connections.py", line 1151, in _read_result_packet self._get_descriptions() File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/connections.py", line 1222, in _get_descriptions field = self.connection._read_packet(FieldDescriptorPacket) File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/connections.py", line 671, in _read_packet % (packet_number, self._next_seq_id)) sqlalchemy.exc.InternalError: (pymysql.err.InternalError) Packet sequence number wrong - got 102 expected 77 [SQL: SELECT mailinglist.list_id AS mailinglist_list_id, mailinglist.preferred_language AS mailinglist_preferred_language, mailingli$ FROM mailinglist WHERE mailinglist.advertised = true ORDER BY mailinglist.list_id LIMIT %(param_1)s] [parameters: {'param_1': 10}] (Background on this error at: http://sqlalche.me/e/2j85) |
Hi,
This is most probably to be fixed in the next core release via https://gitlab.com/mailman/mailman/-/merge_requests/864
It seems the same issue I've filed for PostgreSQL: https://gitlab.com/mailman/mailman/-/issues/854
You can apply the patch for now and help with its testing.
BR, Danil
пн, 24 мая 2021 г., 11:25 Torge Riedel <torgeriedel@gmx.de>:
|Hi list, sometimes I get the following error in mailman core's log: "pymysql.err.InternalError: Packet sequence number wrong - got 102 expected 77". I attached the full log after this mail. I check the provided link in the log (|||http://sqlalche.me/e/2j85|) and also searched for it on the internet and found the following possible reasons: 1. DB user does not have permissions at all -> I doubt that, because in general mailman is working ok 2. DB user is not allowed to connect from remote -> I doubt that too, because everything is on one host and DB user is allowed to connect from localhost 3. Multi-Threading -> pymysql is mentioned to be not thread-safe and each thread needs its own connection May this be caused by multi-threading? What do I have to do (is there anything I can do?) to solve this on my own?|||||
Kind regards Torge
||
|Full log follows: [2021-05-23 07:31:45 +0200] [8244] [ERROR] Error handling request /3.1/lists?advertised=true&count=10&page=1 Traceback (most recent call last): File "/opt/mailman/core/venv/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 1284, in _execute_context cursor, statement, parameters, context File "/opt/mailman/core/venv/lib/python3.6/site-packages/sqlalchemy/engine/default.py", line 590, in do_execute cursor.execute(statement, parameters) File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/cursors.py", line 170, in execute result = self._query(query) File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/cursors.py", line 328, in _query conn.query(q) File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/connections.py", line 517, in query self._affected_rows = self._read_query_result(unbuffered=unbuffered) File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/connections.py", line 732, in _read_query_result result.read() File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/connections.py", line 1082, in read self._read_result_packet(first_packet) File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/connections.py", line 1151, in _read_result_packet self._get_descriptions() File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/connections.py", line 1222, in _get_descriptions field = self.connection._read_packet(FieldDescriptorPacket) File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/connections.py", line 671, in _read_packet % (packet_number, self._next_seq_id)) pymysql.err.InternalError: Packet sequence number wrong - got 102 expected 77 The above exception was the direct cause of the following exception: Traceback (most recent call last): File "/opt/mailman/core/venv/lib/python3.6/site-packages/mailman/database/transaction.py", line 50, in wrapper rtn = function(*args, **kws) File "/opt/mailman/core/venv/lib/python3.6/site-packages/mailman/rest/wsgiapp.py", line 193, in __call__ return super().__call__(environ, start_response) File "falcon/api.py", line 274, in falcon.api.API.__call__ File "falcon/api.py", line 269, in falcon.api.API.__call__ File "/opt/mailman/core/venv/lib/python3.6/site-packages/mailman/rest/lists.py", line 322, in on_get resource = self._make_collection(request) File "/opt/mailman/core/venv/lib/python3.6/site-packages/mailman/rest/helpers.py", line 172, in _make_collection request, self._get_collection(request)) File "/opt/mailman/core/venv/lib/python3.6/site-packages/mailman/rest/helpers.py", line 167, in _paginate return list_start, total_size, collection[list_start:list_end] File "/opt/mailman/core/venv/lib/python3.6/site-packages/mailman/utilities/queries.py", line 42, in __getitem__ return self._query[index] File "/opt/mailman/core/venv/lib/python3.6/site-packages/sqlalchemy/orm/query.py", line 3149, in __getitem__ return list(res) File "/opt/mailman/core/venv/lib/python3.6/site-packages/sqlalchemy/orm/query.py", line 3481, in __iter__ return self._execute_and_instances(context) File "/opt/mailman/core/venv/lib/python3.6/site-packages/sqlalchemy/orm/query.py", line 3506, in _execute_and_instances result = conn.execute(querycontext.statement, self._params) File "/opt/mailman/core/venv/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 1020, in execute return meth(self, multiparams, params) File "/opt/mailman/core/venv/lib/python3.6/site-packages/sqlalchemy/sql/elements.py", line 298, in _execute_on_connection return connection._execute_clauseelement(self, multiparams, params) File "/opt/mailman/core/venv/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 1139, in _execute_clauseelement distilled_params, File "/opt/mailman/core/venv/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 1324, in _execute_context e, statement, parameters, cursor, context File "/opt/mailman/core/venv/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 1518, in _handle_dbapi_exception sqlalchemy_exception, with_traceback=exc_info[2], from_=e File "/opt/mailman/core/venv/lib/python3.6/site-packages/sqlalchemy/util/compat.py", line 178, in raise_ raise exception File "/opt/mailman/core/venv/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 1284, in _execute_context cursor, statement, parameters, context File "/opt/mailman/core/venv/lib/python3.6/site-packages/sqlalchemy/engine/default.py", line 590, in do_execute cursor.execute(statement, parameters) File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/cursors.py", line 170, in execute result = self._query(query) File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/cursors.py", line 328, in _query conn.query(q) File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/connections.py", line 517, in query self._affected_rows = self._read_query_result(unbuffered=unbuffered) File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/connections.py", line 732, in _read_query_result result.read() File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/connections.py", line 1082, in read self._read_result_packet(first_packet) File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/connections.py", line 1151, in _read_result_packet self._get_descriptions() File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/connections.py", line 1222, in _get_descriptions field = self.connection._read_packet(FieldDescriptorPacket) File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/connections.py", line 671, in _read_packet % (packet_number, self._next_seq_id)) sqlalchemy.exc.InternalError: (pymysql.err.InternalError) Packet sequence number wrong - got 102 expected 77 [SQL: SELECT mailinglist.list_id AS mailinglist_list_id, mailinglist.preferred_language AS mailinglist_preferred_language, mailingli$ FROM mailinglist WHERE mailinglist.advertised = true ORDER BY mailinglist.list_id LIMIT %(param_1)s] [parameters: {'param_1': 10}] (Background on this error at: http://sqlalche.me/e/2j85) |
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Am 24.05.21 um 11:38 schrieb Danil Smirnov:
You can apply the patch for now and help with its testing.
Hi Danil,
thanks for your reply. Yes, that could be a similar / the same issue. Since I have no test system available I just set the workers to 1 as mentioned.
I hope I can find some time to apply the patch and test it, but I have to find a slot when there is less to no load on the mailman installation.
Kind regards Torge
On 5/24/21 10:48 AM, Torge Riedel wrote:
Uh, I don't know why the format of my mail is totally messed up ... sorry for that.
It appears that you may have created a rich text (HTML) email and your
MUA created a text/plain alternative which wrapped and filled the
message body.
-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan
For anyone who's interested, here's a reformatted version of the traceback.
> Full log follows:
> [2021-05-23 07:31:45 +0200] [8244] [ERROR] Error handling request /3.1/lists?advertised=true&count=10&page=1
> Traceback (most recent call last):
> File "/opt/mailman/core/venv/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 1284, in _execute_context
> cursor, statement, parameters, context
> File "/opt/mailman/core/venv/lib/python3.6/site-packages/sqlalchemy/engine/default.py", line 590, in do_execute
> cursor.execute(statement, parameters)
> File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/cursors.py", line 170, in execute
> result = self._query(query)
> File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/cursors.py", line 328, in _query
> conn.query(q)
> File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/connections.py", line 517, in query
> self._affected_rows = self._read_query_result(unbuffered=unbuffered)
> File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/connections.py", line 732, in _read_query_result
> result.read()
> File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/connections.py", line 1082, in read
> self._read_result_packet(first_packet)
> File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/connections.py", line 1151, in _read_result_packet
> self._get_descriptions()
> File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/connections.py", line 1222, in _get_descriptions
> field = self.connection._read_packet(FieldDescriptorPacket)
> File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/connections.py", line 671, in _read_packet
> % (packet_number, self._next_seq_id))
> pymysql.err.InternalError: Packet sequence number wrong - got 102 expected 77
>
> The above exception was the direct cause of the following exception:
>
> Traceback (most recent call last):
> File "/opt/mailman/core/venv/lib/python3.6/site-packages/mailman/database/transaction.py", line 50, in wrapper
> rtn = function(*args, **kws)
> File "/opt/mailman/core/venv/lib/python3.6/site-packages/mailman/rest/wsgiapp.py", line 193, in __call__
> return super().__call__(environ, start_response)
> File "falcon/api.py", line 274, in falcon.api.API.__call__
> File "falcon/api.py", line 269, in falcon.api.API.__call__
> File "/opt/mailman/core/venv/lib/python3.6/site-packages/mailman/rest/lists.py", line 322, in on_get
> resource = self._make_collection(request)
> File "/opt/mailman/core/venv/lib/python3.6/site-packages/mailman/rest/helpers.py", line 172, in _make_collection
> request, self._get_collection(request))
> File "/opt/mailman/core/venv/lib/python3.6/site-packages/mailman/rest/helpers.py", line 167, in _paginate
> return list_start, total_size, collection[list_start:list_end]
> File "/opt/mailman/core/venv/lib/python3.6/site-packages/mailman/utilities/queries.py", line 42, in __getitem__
> return self._query[index]
> File "/opt/mailman/core/venv/lib/python3.6/site-packages/sqlalchemy/orm/query.py", line 3149, in __getitem__
> return list(res)
> File "/opt/mailman/core/venv/lib/python3.6/site-packages/sqlalchemy/orm/query.py", line 3481, in __iter__
> return self._execute_and_instances(context)
> File "/opt/mailman/core/venv/lib/python3.6/site-packages/sqlalchemy/orm/query.py", line 3506, in _execute_and_instances
> result = conn.execute(querycontext.statement, self._params)
> File "/opt/mailman/core/venv/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 1020, in execute
> return meth(self, multiparams, params)
> File "/opt/mailman/core/venv/lib/python3.6/site-packages/sqlalchemy/sql/elements.py", line 298, in _execute_on_connection
> return connection._execute_clauseelement(self, multiparams, params)
> File "/opt/mailman/core/venv/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 1139, in _execute_clauseelement
> distilled_params,
> File "/opt/mailman/core/venv/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 1324, in _execute_context
> e, statement, parameters, cursor, context
> File "/opt/mailman/core/venv/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 1518, in _handle_dbapi_exception
> sqlalchemy_exception, with_traceback=exc_info[2], from_=e
> File "/opt/mailman/core/venv/lib/python3.6/site-packages/sqlalchemy/util/compat.py", line 178, in raise_
> raise exception
> File "/opt/mailman/core/venv/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 1284, in _execute_context
> cursor, statement, parameters, context
> File "/opt/mailman/core/venv/lib/python3.6/site-packages/sqlalchemy/engine/default.py", line 590, in do_execute
> cursor.execute(statement, parameters)
> File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/cursors.py", line 170, in execute
> result = self._query(query)
> File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/cursors.py", line 328, in _query
> conn.query(q)
> File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/connections.py", line 517, in query
> self._affected_rows = self._read_query_result(unbuffered=unbuffered)
> File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/connections.py", line 732, in _read_query_result
> result.read()
> File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/connections.py", line 1082, in read
> self._read_result_packet(first_packet)
> File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/connections.py", line 1151, in _read_result_packet
> self._get_descriptions()
> File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/connections.py", line 1222, in _get_descriptions
> field = self.connection._read_packet(FieldDescriptorPacket)
> File "/opt/mailman/core/venv/lib/python3.6/site-packages/pymysql/connections.py", line 671, in _read_packet
> % (packet_number, self._next_seq_id))
> sqlalchemy.exc.InternalError: (pymysql.err.InternalError) Packet sequence number wrong - got 102 expected 77 [SQL: SELECT mailinglist.list_id AS mailinglist_list_id, mailinglist.preferred_language AS mailinglist_preferred_language, mailingli$ FROM mailinglist WHERE mailinglist.advertised = true ORDER BY mailinglist.list_id LIMIT %(param_1)s] [parameters: {'param_1': 10}]
> (Background on this error at: http://sqlalche.me/e/2j85)
-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan
participants (3)
-
Danil Smirnov -
Mark Sapiro -
Torge Riedel