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Added support for BACKUP LOCK / BACKUP UNLOCK

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This commit is contained in:
Michael Widenius
2019-01-14 15:46:49 +02:00
parent 3975e22d55
commit aad0165cea
11 changed files with 186 additions and 10 deletions
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3
sql/sql_class.cc
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@ -667,6 +667,7 @@ THD::THD(my_thread_id id, bool is_wsrep_applier, bool skip_global_sys_var_lock)
main_da.init();
mdl_context.init(this);
mdl_backup_lock= 0;
/*
Pass nominal parameters to init_alloc_root only to ensure that
@ -1488,6 +1489,8 @@ void THD::cleanup(void)
mdl_context.release_transactional_locks();
backup_end(this);
backup_unlock(this);
/* Release the global read lock, if acquired. */
if (global_read_lock.is_acquired())
global_read_lock.unlock_global_read_lock(this);