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Bug #27417 thd->no_trans_update.stmt lost value inside of SF-exec-stack
  
Once had been set the flag might later got reset inside of a stored routine 
execution stack.
The reason was in that there was no check if a new statement started at time 
of resetting.
The artifact affects most of binlogable DML queries. Notice, that multi-update 
is wrapped up within
  bug@27716 fix, multi-delete bug@29136.
  
Fixed with saving parent's statement flag of whether the statement modified 
non-transactional table, and unioning (merging) the value with that was gained 
in mysql_execute_command.
  
Resettling thd->no_trans_update members into thd->transaction.`member`;
Asserting code;
Effectively the following properties are held.
  
1. At the end of a substatement thd->transaction.stmt.modified_non_trans_table
   reflects the fact if such a table got modified by the substatement.
   That also respects THD::really_abort_on_warnin() requirements.
2. Eventually thd->transaction.stmt.modified_non_trans_table will be computed as
   the union of the values of all invoked sub-statements.
   That fixes this bug#27417;

Computing of thd->transaction.all.modified_non_trans_table is refined to base to 
the stmt's value for all the case including insert .. select statement which 
before the patch had an extra issue bug@28960.
Minor issues are covered with mysql_load, mysql_delete, and binloggin of insert in
to temp_table select. 
  
The supplied test verifies limitely, mostly asserts. The ultimate testing is defered
for bug@13270, bug@23333.
This commit is contained in:
gkodinov/kgeorge@magare.gmz
2007-07-30 18:27:36 +03:00
parent b6bb988d12
commit 9a0e6ec6d2
16 changed files with 368 additions and 90 deletions
Download Patch File Download Diff File Expand all files Collapse all files

31
sql/sql_delete.cc
View File

@ -315,6 +315,9 @@ cleanup:
delete select;
transactional_table= table->file->has_transactions();
if (!transactional_table && deleted > 0)
thd->transaction.stmt.modified_non_trans_table= TRUE;
/* See similar binlogging code in sql_update.cc, for comments */
if ((error < 0) || (deleted && !transactional_table))
{
@ -327,9 +330,10 @@ cleanup:
if (mysql_bin_log.write(&qinfo) && transactional_table)
error=1;
}
if (!transactional_table)
thd->no_trans_update.all= TRUE;
if (thd->transaction.stmt.modified_non_trans_table)
thd->transaction.all.modified_non_trans_table= TRUE;
}
DBUG_ASSERT(transactional_table || !deleted || thd->transaction.stmt.modified_non_trans_table);
free_underlaid_joins(thd, select_lex);
if (transactional_table)
{
@ -642,20 +646,22 @@ bool multi_delete::send_data(List<Item> &values)
if (table->triggers &&
table->triggers->process_triggers(thd, TRG_EVENT_DELETE,
TRG_ACTION_BEFORE, FALSE))
DBUG_RETURN(1);
DBUG_RETURN(1);
table->status|= STATUS_DELETED;
if (!(error=table->file->delete_row(table->record[0])))
{
deleted++;
deleted++;
if (!table->file->has_transactions())
thd->transaction.stmt.modified_non_trans_table= TRUE;
if (table->triggers &&
table->triggers->process_triggers(thd, TRG_EVENT_DELETE,
TRG_ACTION_AFTER, FALSE))
DBUG_RETURN(1);
DBUG_RETURN(1);
}
else
{
table->file->print_error(error,MYF(0));
DBUG_RETURN(1);
table->file->print_error(error,MYF(0));
DBUG_RETURN(1);
}
}
else
@ -705,6 +711,7 @@ void multi_delete::send_error(uint errcode,const char *err)
error= 1;
send_eof();
}
DBUG_ASSERT(!normal_tables || !deleted || thd->transaction.stmt.modified_non_trans_table);
DBUG_VOID_RETURN;
}
@ -732,6 +739,7 @@ int multi_delete::do_deletes()
for (; table_being_deleted;
table_being_deleted= table_being_deleted->next_local, counter++)
{
ha_rows last_deleted= deleted;
TABLE *table = table_being_deleted->table;
if (tempfiles[counter]->get(table))
{
@ -769,6 +777,8 @@ int multi_delete::do_deletes()
break;
}
}
if (last_deleted != deleted && !table->file->has_transactions())
thd->transaction.stmt.modified_non_trans_table= TRUE;
end_read_record(&info);
if (thd->killed && !local_error)
local_error= 1;
@ -807,7 +817,6 @@ bool multi_delete::send_eof()
{
query_cache_invalidate3(thd, delete_tables, 1);
}
if ((local_error == 0) || (deleted && normal_tables))
{
if (mysql_bin_log.is_open())
@ -819,9 +828,11 @@ bool multi_delete::send_eof()
if (mysql_bin_log.write(&qinfo) && !normal_tables)
local_error=1; // Log write failed: roll back the SQL statement
}
if (!transactional_tables)
thd->no_trans_update.all= TRUE;
if (thd->transaction.stmt.modified_non_trans_table)
thd->transaction.all.modified_non_trans_table= TRUE;
}
DBUG_ASSERT(!normal_tables || !deleted || thd->transaction.stmt.modified_non_trans_table);
/* Commit or rollback the current SQL statement */
if (transactional_tables)
if (ha_autocommit_or_rollback(thd,local_error > 0))