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Making FLUSH TABLES WITH READ LOCK block COMMITs of existing transactions,

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in a deadlock-free manner. This splits locking the global read lock in two steps.
This fixes a consequence of this bug, known as:
BUG#4953 'mysqldump --master-data may report incorrect binlog position if using InnoDB'
And a test.
This commit is contained in:
guilhem@mysql.com
2004-08-20 16:35:23 +02:00
parent 96a000ae78
commit 5db56a106b
9 changed files with 154 additions and 21 deletions
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4
sql/sql_class.h
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@@ -478,7 +478,7 @@ public:
ulong rand_saved_seed1, rand_saved_seed2;
long dbug_thread_id;
pthread_t real_id;
uint current_tablenr,tmp_table,cond_count;
uint current_tablenr,tmp_table,cond_count,global_read_lock;
uint server_status,open_options,system_thread;
uint32 query_length;
uint32 db_length;
@@ -489,7 +489,7 @@ public:
bool set_query_id,locked,count_cuted_fields,some_tables_deleted;
bool no_errors, allow_sum_func, password, fatal_error;
bool query_start_used,last_insert_id_used,insert_id_used,rand_used;
bool in_lock_tables,global_read_lock;
bool in_lock_tables;
bool query_error, bootstrap, cleanup_done;
bool safe_to_cache_query;
bool volatile killed;