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| author | Andrei Elkin <andrei.elkin@mariadb.com> | 2017-11-22 17:10:34 +0200 |
|---|---|---|
| committer | Monty <monty@mariadb.org> | 2017-12-18 13:43:37 +0200 |
| commit | e972125f11d8f37bc263b113e85ed064257a92ee (patch) | |
| tree | f705082eec5bdb4f274b3e7ceee4714b86c96075 /sql/rpl_mi.h | |
| parent | abceaa75428f9b2d64ce64629d010af9aa6eae1f (diff) | |
| download | mariadb-git-e972125f11d8f37bc263b113e85ed064257a92ee.tar.gz | |
MDEV-13073 This part merges the Ali semisync related changes
and specifically the ack receiving functionality.
Semisync is turned to be static instead of plugin so its functions
are invoked at the same points as RUN_HOOKS.
The RUN_HOOKS and the observer interface remain to be removed by later
patch.
Todo:
React on killed status by repl_semisync_master.wait_after_sync(). Currently
Repl_semi_sync_master::commit_trx does not check the killed status.
There were few bugfixes found that are present in mysql and its unclear
whether/how they are covered. Those include:
Bug#15985893: GTID SKIPPED EVENTS ON MASTER CAUSE SEMI SYNC TIME-OUTS
Bug#17932935 CALLING IS_SEMI_SYNC_SLAVE() IN EACH FUNCTION CALL
HAS BAD PERFORMANCE
Bug#20574628: SEMI-SYNC REPLICATION PERFORMANCE DEGRADES WITH A HIGH NUMBER OF THREADS
Diffstat (limited to 'sql/rpl_mi.h')
| -rw-r--r-- | sql/rpl_mi.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/sql/rpl_mi.h b/sql/rpl_mi.h index 610bc77b683..14d74dc4bb7 100644 --- a/sql/rpl_mi.h +++ b/sql/rpl_mi.h @@ -311,6 +311,11 @@ class Master_info : public Slave_reporting_capability /* The parallel replication mode. */ enum_slave_parallel_mode parallel_mode; + /* + semi_ack is used to identify if the current binlog event needs an + ACK from slave, or if delay_master is enabled. + */ + int semi_ack; }; int init_master_info(Master_info* mi, const char* master_info_fname, |