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----------------------------------------------------------
revno: 2617.69.20
committer: Konstantin Osipov <kostja@sun.com>
branch nick: 5.4-4284-1-assert
timestamp: Thu 2009-08-13 18:29:55 +0400
message:
  WL#4284 "Transactional DDL locking"
  A review fix.
  Since WL#4284 implementation separated MDL_request and MDL_ticket,
  MDL_request becamse a utility object necessary only to get a ticket.
  Store it by-value in TABLE_LIST with the intent to merge
  MDL_request::key with table_list->table_name and table_list->db
  in future.
  Change the MDL subsystem to not require MDL_requests to
  stay around till close_thread_tables().
  Remove the list of requests from the MDL context.
  Requests for shared metadata locks acquired in open_tables()
  are only used as a list in recover_from_failed_open_table_attempt(),
  which calls mdl_context.wait_for_locks() for this list.
  To keep such list for recover_from_failed_open_table_attempt(),
  introduce a context class (Open_table_context), that collects
  all requests.
  A lot of minor cleanups and simplications that became possible
  with this change.
This commit is contained in:
Konstantin Osipov
2009-12-08 12:57:07 +03:00
parent 4a8a1c568d
commit a66a2608ae
30 changed files with 566 additions and 733 deletions
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4
sql/sql_update.cc
View File

@ -226,7 +226,7 @@ int mysql_update(THD *thd,
break;
if (!need_reopen)
DBUG_RETURN(1);
close_tables_for_reopen(thd, &table_list, FALSE);
close_tables_for_reopen(thd, &table_list);
}
if (mysql_handle_derived(thd->lex, &mysql_derived_prepare) ||
@ -1149,7 +1149,7 @@ reopen_tables:
*/
cleanup_items(thd->free_list);
close_tables_for_reopen(thd, &table_list, FALSE);
close_tables_for_reopen(thd, &table_list);
goto reopen_tables;
}