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Merge tag 'mariadb-10.0.23' into 10.0-galera

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This commit is contained in:
Nirbhay Choubey
2015-12-19 14:24:38 -05:00
parent 18173ddfc4 90ea014585
commit dad555a09c
3579 changed files with 644330 additions and 222421 deletions
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16
sql/sql_insert.cc
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@ -2006,7 +2006,7 @@ public:
*/
MDL_request grl_protection;
Delayed_insert()
Delayed_insert(SELECT_LEX *current_select)
:locks_in_memory(0), table(0),tables_in_use(0),stacked_inserts(0),
status(0), handler_thread_initialized(FALSE), group_count(0)
{
@ -2016,7 +2016,7 @@ public:
strmake_buf(thd.security_ctx->priv_user, thd.security_ctx->user);
thd.current_tablenr=0;
thd.set_command(COM_DELAYED_INSERT);
thd.lex->current_select= 0; // for my_message_sql
thd.lex->current_select= current_select;
thd.lex->sql_command= SQLCOM_INSERT; // For innodb::store_lock()
/*
Prevent changes to global.lock_wait_timeout from affecting
@ -2193,7 +2193,7 @@ bool delayed_get_table(THD *thd, MDL_request *grl_protection_request,
*/
if (! (di= find_handler(thd, table_list)))
{
if (!(di= new Delayed_insert()))
if (!(di= new Delayed_insert(thd->lex->current_select)))
goto end_create;
thread_safe_increment32(&thread_count, &thread_count_lock);
@ -2836,6 +2836,16 @@ pthread_handler_t handle_delayed_insert(void *arg)
if (di->open_and_lock_table())
goto err;
/*
INSERT DELAYED generally expects thd->lex->current_select to be NULL,
since this is not an attribute of the current thread. This can lead to
problems if the thread that spawned the current one disconnects.
current_select will then point to freed memory. But current_select is
required to resolve the partition function. So, after fulfilling that
requirement, we set the current_select to 0.
*/
thd->lex->current_select= NULL;
/* Tell client that the thread is initialized */
mysql_cond_signal(&di->cond_client);