Hi, Kazuhiko!

On May 24, Kazuhiko Shiozaki wrote:
> Hi !
> 
> First of all, congratulations to MariaDB 10.2 GA.
> 
> mysqlclient (python binding : https://pypi.python.org/pypi/mysqlclient/1.3.10 
> ) cannot be built with MariaDB 10.2.6 like the following :
> 
> _mysql.c: In function '_mysql_ConnectionObject_ping':
> _mysql.c:1911:41: error: 'MYSQL' has no member named 'reconnect'
>   if ( reconnect != -1 ) self->connection.reconnect = reconnect;

Thanks. This is now reported as https://jira.mariadb.org/browse/MDEV-12950

> error: Setup script exited with error: command 'gcc' failed with exit status 1
> 
> This is because the change in include/mysql/mysql.h.
> 
> In MariaDB 10.2.5, it is same as mariadb-10.2.5/include/mysql.h in the source 
> tree.
> In MariaDB 10.2.6, it is same as mariadb-10.2.6/libmariadb/include/mysql.h in 
> the source tree.
> 
> Is this change intentional ? Should I contact mysqlclient developer
> for further fix of this issue ?

Yes, it was intentional, one is supposed to use

  mysql_options(mysql, MYSQL_OPT_RECONNECT, ...);

this works both in libmysqlclient and in the new libmariadb and doesn't
depend on the internal MYSQL structure.

The effect of breaking python connector (and perl DBD-mysql) was
unintentional, though. At the moment I don't know what the fix will be -
e.g. we could temporarily restore mysql->reconnect. Or we could submit
patches to python and perl connectors to use MYSQL_OPT_RECONNECT.
Or both. Or something else.

Regards,
Sergei
Chief Architect MariaDB
and secur...@mariadb.org

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