Description:
Using the Python MySQL connector I notice that any large query I submit seems to fail with the following error:
Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/mysql/connector/network.py", line 212, in send_compressed
self.sock.sendall(zip_packet)
BlockingIOError: [Errno 35] Resource temporarily unavailable
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/threading.py", line 921, in _bootstrap_inner
self.run()
File "/Users/maldeiri/raw_data_processing/sql_retriever.py", line 22, in run
self.mysql_cursor.execute(self.sql_statement)
File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/mysql/connector/cursor.py", line 515, in execute
self._handle_result(self._connection.cmd_query(stmt))
File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/mysql/connector/connection.py", line 488, in cmd_query
result = self._handle_result(self._send_cmd(ServerCmd.QUERY, query))
File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/mysql/connector/connection.py", line 261, in _send_cmd
packet_number)
File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/site-packages/mysql/connector/network.py", line 215, in send_compressed
errno=2055, values=(self.get_address(), _strioerror(err)))
mysql.connector.errors.OperationalError: 2055: Lost connection to MySQL server at 'database_end_point:3306', system error: 35 Resource temporarily unavailable
I have tried using the compress flag setting it to both true and false, however this doesn't resolve the problem.
I know this is a problem with the connector as using the pymysql library doesn't cause any errors for the same queries, client machine and Database.
How to repeat:
Create very large Select statements, for example "select * from table_1 where column_1 in (val_1, val_2.... val_350,000)"
As I mentioned this only seems to happen when using the MySQL connector and doesn't happen with other libraries.