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Backport of revno: 2617.69.40

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A pre-requisite patch for Bug#30977 "Concurrent statement using 
stored function and DROP FUNCTION breaks SBR".

This patch changes the MDL API by introducing a namespace for
lock keys: MDL_TABLE for tables and views and MDL_PROCEDURE
for stored procedures and functions. The latter is needed for
the fix for Bug#30977.
This commit is contained in:
Jon Olav Hauglid
2009-12-09 09:51:20 +01:00
parent 8817b0d3af
commit 4592dd2d81
13 changed files with 62 additions and 57 deletions
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2
sql/sql_handler.cc
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@ -264,7 +264,7 @@ bool mysql_ha_open(THD *thd, TABLE_LIST *tables, bool reopen)
memcpy(hash_tables->db, tables->db, dblen);
memcpy(hash_tables->table_name, tables->table_name, namelen);
memcpy(hash_tables->alias, tables->alias, aliaslen);
hash_tables->mdl_request.init(0, db, name, MDL_SHARED);
hash_tables->mdl_request.init(MDL_TABLE, db, name, MDL_SHARED);
/* add to hash */
if (my_hash_insert(&thd->handler_tables_hash, (uchar*) hash_tables))