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MDEV-162 Enhanced semisync replication

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Implement --semi-sync-master-wait-point=AFTER_SYNC|AFTER_COMMIT.

When AFTER_SYNC, the semi-sync wait will be done earlier, before the storage
engine commit rather than after. This means that a transaction will not be
visible on the master until at least one slave has received it.
This commit is contained in:
Jonas Oreland
2014-12-23 13:38:00 +01:00
committed by Kristian Nielsen
parent 4d8b346e07
commit 0b87de124d
29 changed files with 1735 additions and 46 deletions
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7
sql/handler.cc
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@@ -32,6 +32,7 @@
#include "sql_acl.h" // SUPER_ACL
#include "sql_base.h" // free_io_cache
#include "discover.h" // extension_based_table_discovery, etc
#include "log.h" // for assert_LOCK_log_owner
#include "log_event.h" // *_rows_log_event
#include "create_options.h"
#include "rpl_filter.h"
@@ -1479,6 +1480,12 @@ int ha_commit_trans(THD *thd, bool all)
done:
DBUG_EXECUTE_IF("crash_commit_after", DBUG_SUICIDE(););
/* documentation of which mutexes are (not) owned */
mysql_mutex_assert_not_owner(&LOCK_prepare_ordered);
assert_LOCK_log_owner(false);
mysql_mutex_assert_not_owner(&LOCK_after_binlog_sync);
mysql_mutex_assert_not_owner(&LOCK_commit_ordered);
RUN_HOOK(transaction, after_commit, (thd, FALSE));
goto end;