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Bug #27571 asynchronousity in setting mysql_query::error and

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Query_log_event::error_code

A query can perform completely having the local var error of mysql_$query
zero, where $query in insert, update, delete, load,
and be  binlogged with error_code e.g KILLED_QUERY while there is no
reason do to so.
That can happen because Query_log_event consults thd->killed flag to
evaluate error_code.

Fixed with implementing a scheme suggested and partly implemented at
time of bug@22725 work-on. error_status is cached immediatly after the
control leaves the main rows-loop and that instance always corresponds
to `error' the local of mysql_$query functions. The cached value
is passed to Query_log_event constructor, not the default thd->killed
which can be changed in between of the caching and the constructing.
This commit is contained in:
aelkin/elkin@koti.dsl.inet.fi
2007-10-29 15:20:59 +02:00
parent ed0ab76e28
commit 27436f0ba3
12 changed files with 509 additions and 203 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
sql/sql_delete.cc
View File

@ -38,6 +38,7 @@ bool mysql_delete(THD *thd, TABLE_LIST *table_list, COND *conds,
ha_rows deleted;
uint usable_index= MAX_KEY;
SELECT_LEX *select_lex= &thd->lex->select_lex;
THD::killed_state killed_status= THD::NOT_KILLED;
DBUG_ENTER("mysql_delete");
if (open_and_lock_tables(thd, table_list))
@ -280,8 +281,8 @@ bool mysql_delete(THD *thd, TABLE_LIST *table_list, COND *conds,
else
table->file->unlock_row(); // Row failed selection, release lock on it
}
if (thd->killed && !error)
error= 1; // Aborted
killed_status= thd->killed;
error= (killed_status == THD::NOT_KILLED)? error : 1;
thd->proc_info="end";
end_read_record(&info);
free_io_cache(table); // Will not do any harm
@ -326,7 +327,7 @@ cleanup:
if (error < 0)
thd->clear_error();
Query_log_event qinfo(thd, thd->query, thd->query_length,
transactional_table, FALSE);
transactional_table, FALSE, killed_status);
if (mysql_bin_log.write(&qinfo) && transactional_table)
error=1;
}
@ -729,7 +730,8 @@ void multi_delete::send_error(uint errcode,const char *err)
}
thd->transaction.all.modified_non_trans_table= true;
}
DBUG_ASSERT(!normal_tables || !deleted || thd->transaction.stmt.modified_non_trans_table);
DBUG_ASSERT(!normal_tables || !deleted ||
thd->transaction.stmt.modified_non_trans_table);
DBUG_VOID_RETURN;
}
@ -817,6 +819,7 @@ int multi_delete::do_deletes()
bool multi_delete::send_eof()
{
THD::killed_state killed_status= THD::NOT_KILLED;
thd->proc_info="deleting from reference tables";
/* Does deletes for the last n - 1 tables, returns 0 if ok */
@ -824,7 +827,7 @@ bool multi_delete::send_eof()
/* compute a total error to know if something failed */
local_error= local_error || error;
killed_status= (local_error == 0)? THD::NOT_KILLED : thd->killed;
/* reset used flags */
thd->proc_info="end";
@ -836,7 +839,8 @@ bool multi_delete::send_eof()
{
query_cache_invalidate3(thd, delete_tables, 1);
}
DBUG_ASSERT(!normal_tables || !deleted || thd->transaction.stmt.modified_non_trans_table);
DBUG_ASSERT(!normal_tables || !deleted ||
thd->transaction.stmt.modified_non_trans_table);
if ((local_error == 0) || thd->transaction.stmt.modified_non_trans_table)
{
if (mysql_bin_log.is_open())
@ -844,7 +848,7 @@ bool multi_delete::send_eof()
if (local_error == 0)
thd->clear_error();
Query_log_event qinfo(thd, thd->query, thd->query_length,
transactional_tables, FALSE);
transactional_tables, FALSE, killed_status);
if (mysql_bin_log.write(&qinfo) && !normal_tables)
local_error=1; // Log write failed: roll back the SQL statement
}