BTW: the two tables do not exist in P_S in MariaDB 10.0.8 -- Peter On Mon, Feb 24, 2014 at 4:02 PM, Peter Laursen <peter_laursen@webyog.com>wrote:
THis is probably a question that Gerog Richter (or possibly Wlad) could reply to.
I came across this bug report: http://bugs.mysql.com/bug.php?id=71801 .. files by former MySQL/Sun/Oracle supporter Veleriuy Kravtchuk
We have a 64 bit C-application compiled with MariaDB C-API (on and for Windows 64 bit). I connect to MySQL 5.6.15 and execute
SELECT * FROM `session_connect_attrs`;
/* PROCESSLIST_ID ATTR_NAME ATTR_VALUE ORDINAL_POSITION -------------- --------------- ---------- ------------------ 2 _os Windows 0 2 _client_name libmariadb 1 2 _pid 5012 2 2 _thread 4640 3 2 _platform x86 4 2 _client_version 1.1.2 5 */
With the MySQL CLI 5.6.15, you will get
/* PROCESSLIST_ID ATTR_NAME ATTR_VALUE ORDINAL_POSITION -------------- --------------- ---------- ------------------ 4 _os Win64 0 4 _client_name libmysql 1 4 _pid 4888 2 4 _thread 4320 3 4 _platform x86_64 4 4 program_name mysql 5 4 _client_version 5.6.15 6 */
The differences I notice are
* Our application populates P_S with "Windows" - not "Win64" as the 5.6.15 CLI * Our application populates 'P_S with "x86" and not "x86_64". * Our application does not populate P_S with a "program_name". But it has a name of course!
MySQL 5.6 docs at http://dev.mysql.com/doc/refman/5.6/en/performance-schema-connection-attribu... (as far as I can understand) that the client should use mysql_options() and mysql_options4() C API functions to populate P_S with all information.
I have two questions:
1) Will the first 2 differences listed require a patch in our code or in libmariadb?
2) Obviosuly the lacking program name in the P_S tables is something that we will neeed to take care of ourselves. However I think that mysql_options4() was added in MySQL 5.6 and the MariaDB API does not supprot it currently (it is targeted to be compatible with Oracle 5.5 API, I think). And to populate the program name we may need to use mysql_options4(). Am I right?