39 Commits (80928395ccd5843cbb33c8ffa6e2d0f72928f87a)

Author	SHA1	Message	Date
Rahim Kanji	989687c68a	Implemented memory usage monitoring for the prepared statement cache with the following changes: ... * Added two new variables to the 'stats_memory_metrics' table: prepare_statement_metadata_memory prepare_statement_backend_memory * Introduced corresponding variables in the Prometheus exporter to measure memory usage of prepare statement metadata and prepare statement backend.	2 years ago
René Cannaò	b912d978b0	Removing or commenting legacy/unused code	5 years ago
Javier Jaramago Fernández	9e70e3918b	Reversed adding 'first_comment' to 'compute_hash' #3427 ... Information from 'first_comment' is redundant since the comment itself is already contained in 'query' when reaching 'compute_hash'.	5 years ago
Javier Jaramago Fernández	028623c06c	Added 'first_comment' to 'MySQL_STMT_Global_info' to allow processing it during 'STMT_EXECUTE' #3427	5 years ago
René Cannaò	7b021e027a	Do not cache routing metadata for COM_STMT_EXECUTE ... From 1.3.0 till 2.0.x , when COM_STMT_PREPARE is executed and Query Processor is executed, metadata are stored in MySQL_STMT_Global_info(). These metadata include routing information. Is a prepared statement is prepared on a specific hostgroup, it will always be executed on the same hostgroup. This causes negative consequences, like the one reported in issue #2691 . This commit: * remove hostgroup_id from MySQL_STMT_Global_info() and other metadata * Query Processor is called also during COM_STMT_EXECUTE * removes hostgroup from table stats_mysql_prepared_statements_info * Query Processor do not perform any query rewrite ruding COM_STMT_EXECUTE	6 years ago
René Cannaò	528d8cac38	Improved debugging ... Added new command `PROXYSQL INTERNAL SESSION` that clients can execute to receive internal information about their own connection in JSON format. Added JSON library. Recompiled SQLite3 to support JSON. Added new column `extended_info` in `stats_mysql_processlist`. Added new mysql variable `mysql-show_processlist_extended` that determine the content of `stats_mysql_processlist.extended_info`: - 0 : no info - 1 : JSON format - 2 : JSON format with pretty printing	7 years ago
René Cannaò	0fdd52b46d	Minor memory leak fix	8 years ago
René Cannaò	e003dcca72	Incorrect PS metadata was being erased. Possible fix for #1428	8 years ago
René Cannaò	be7f687a43	Optimize when purging prepared statements	8 years ago
René Cannaò	a8e8859b79	Add rw lock to ensure metadata aren't updated while running STMT_PREPARE_RESPONSE	8 years ago
René Cannaò	7ab67dc685	Bug fix for #1333 ... Prepared statements counters are now computed at runtime instead of on-demand. Now MySQL_STMT_Manager_v14::get_metrics() doesn't depend anymore from the number of prepared stataments cached. The old code (slow code) is still present in the DEBUG version, and used to validate the new counters. That also means that DEBUG versions are way slower than non debug versions.	8 years ago
René Cannaò	3520dbbacc	Remove all references to PS handling before 1.4 ... Handling of prepared statements changed a lot in 1.4 , as a lot of code was rewritten. Old code was still present, and was possible to toggle it on and off based on PROXYSQL_STMT_V14 . Because only the new code is maintained, all references to old code are now removed, including PROXYSQL_STMT_V14	8 years ago
René Cannaò	3ddbfd826f	Purge PS metadata cache only when possible #1312	8 years ago
René Cannaò	6302628772	Data sent with STMT_SEND_LONG_DATA was lost #1283 ... Values were incorrectly set to NULL	8 years ago
René Cannaò	ea9fa03ab1	Added table stats.stats_mysql_prepared_statements_info ... This new table exports global metrics on prepared statements	8 years ago
René Cannaò	703ee8ef0f	Reset connections instead of dropping them when mysql-max_stmts_per_connection is reached ... Also fixed a memory leak associate with this feature. Cleaned up a bit of code.	8 years ago
René Cannaò	375f912ab0	Stmt_Cached and Stmt_Max_Stmt_id for PS #1198 ... In 1.4 the handling of prepared statements were rewritten to solve some design limitations. The code responsible for `Stmt_Cached` and `Stmt_Max_Stmt_id` wasn't migrated tho. Fixed now.	9 years ago
René Cannaò	59bac7f365	Reset PS metadata if they change ... Possible bug fix for #965	9 years ago
René Cannaò	080bb3d471	Big change to imporve how prepared statements work	9 years ago
René Cannaò	2f65c2e48b	Evaluate enforce_autocommit_on_reads on PS #899 ... Variable mysql-enforce_autocommit_on_reads wasn't evaluate for prepared statements.	9 years ago
René Cannaò	a6c53d0d12	Revert "Refactor header includes."	9 years ago
Maxim Bublis	30dbcc21a8	Refactor header includes. ... * reduce build time by 25%; * remove circular dependency on `cpp.h` and other headers. * fixes issue with `my_global.h` from mariadbclient which redefines `__attribute__`, that leads to broken STL and GCC intrinsics if `<algorithm>` wasn't included prior including this header; * fixes another issue with redefined `__attribute__` which leads to `_conn_exchange_t` not being aligned to cache line size; * removes `pthread_setstacksize` calls as `my_global.h` redefines `pthread_setstacksize` to be `pthread_dummy(0)` which led to stack size being never adjusted; * add missing include guards to some headers; * remove unused proxysql_hash.h header.	9 years ago
Maxim Bublis	043a321e55	Cleanup legacy codebase.	9 years ago
René Cannaò	b25239c72a	Improvements related to STMT cache ... These improvements avoid a race condition in which a prepared statement is removed from the cache before it is marked as used by the client. This race condition was noticed when running benchmark creating 7000 _unique_ prepared statements per second.	9 years ago
René Cannaò	8074e738ed	Added support for STMT_SEND_LONG_DATA #764	9 years ago
René Cannaò	1287a6edcf	Removed stmt_info from stmt_execute_metadata_t ... Was unused	9 years ago
René Cannaò	505196fd6b	Implemented recycling of stmt_id ... Once stmt_id aren't used anymore, they can be reused	10 years ago
René Cannaò	4a12260df3	Purge MySQL_STMTs_meta entries when not used ... MySQL_STMTs_meta() is aware to which session it belongs entries are removed from MySQL_STMTs_meta() when unused find_prepared_statement_by_hash() increases the client ref count Hardcoded a maximum number of statements	10 years ago
René Cannaò	016b596a0f	MySQL_STMTs_local is aware of being client or not ... The called of MySQL_STMTs_local functions doesn't must specify if it is a client or a backend. Added also a function in MySQL_Connection to make the connection aware it is a client.	10 years ago
René Cannaò	1b4afb7743	Futher development for prepared statements ... MySQL_STMT_Manager now stores 2 reference counters per statement: one for client and one for server Statement client side are removed with STMT_CLOSE command is processed Bytes sends and received are accounted globally and per server	10 years ago
René Cannaò	d9afe2b012	Prepared Statements and query digest	10 years ago
René Cannaò	e0c7ca209a	Implemented PROCESSLIST with Prepared Statements	10 years ago
René Cannaò	60c35d8f67	Continuing work on PS ... Introduced classes: * stmt_execute_metadata_t * MySQL_STMTs_meta	10 years ago
René Cannaò	a68e5721eb	Unstable changes to support prepared statements ... So far, single thread sysbench is working. Multi-threaded and resume from broken connections is still not working. It means it still needs a lot of changes.	10 years ago
René Cannaò	dc4bc5e3db	Adding some documentation/comment	10 years ago
René Cannaò	18f273210d	Drafting STMT_EXECUTE	10 years ago
René Cannaò	22dc1a017d	Code to support STMT_PREPARE ... Variable mysql-stmt_multiplexing is introduced too, but not active	10 years ago
René Cannaò	91e0bb2b82	Preparing more test case for prepared stataments	10 years ago
René Cannaò	4fb78b90ba	Drafting support for Prepared Statements	10 years ago