Skip to content

M
mariadb
Commit 27436f0b authored by aelkin/elkin@koti.dsl.inet.fi's avatar aelkin/elkin@koti.dsl.inet.fi
Browse files
Options

Bug #27571 asynchronousity in setting mysql_`query`::error and 

           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.
parent ed0ab76e
Hide whitespace changes
Inline Side-by-side
Showing with 491 additions and 185 deletions
mysql-test/r/binlog_killed.result
View file @ 27436f0b
......@@ -9,4 +9,110 @@ insert into t2 values (null, null), (null, get_lock("a", 10));
select @result /* must be zero either way */;
@result
0
delete from t1;
delete from t2;
insert into t1 values (1,1),(2,2);
begin;
update t1 set b=11 where a=2;
update t1 set b=b+10;
kill query ID;
rollback;
ERROR 70100: Query execution was interrupted
select * from t1 /* must be the same as before (1,1),(2,2) */;
a b
1 1
2 2
begin;
delete from t1 where a=2;
delete from t1 where a=2;
kill query ID;
rollback;
ERROR 70100: Query execution was interrupted
select * from t1 /* must be the same as before (1,1),(2,2) */;
a b
1 1
2 2
drop table if exists t4;
create table t4 (a int, b int) engine=innodb;
insert into t4 values (3, 3);
begin;
insert into t1 values (3, 3);
begin;
insert into t1 select * from t4 for update;
kill query ID;
rollback;
ERROR 70100: Query execution was interrupted
rollback;
select * from t1 /* must be the same as before (1,1),(2,2) */;
a b
1 1
2 2
drop table t4;
create function bug27563(n int)
RETURNS int(11)
DETERMINISTIC
begin
if n > 1 then
select get_lock("a", 10) into @a;
end if;
return n;
end|
delete from t2;
insert into t2 values (1,1), (2,2);
reset master;
select get_lock("a", 20);
get_lock("a", 20)
1
update t2 set b=b + bug27563(b) order by a;
kill query ID;
ERROR 70100: Query execution was interrupted
select * from t2 /* must be (1,2), (2,2) */;
a b
1 2
2 2
show master status /* must have the update event more to FD */;
File Position Binlog_Do_DB Binlog_Ignore_DB
master-bin.000001 211
select
(@a:=load_file("MYSQLTEST_VARDIR/tmp/binlog_killed_bug27571.binlog"))
is not null;
(@a:=load_file("MYSQLTEST_VARDIR/tmp/binlog_killed_bug27571.binlog"))
is not null
1
select 0 /* must return 0 to mean the killed query is in */;
0
0
select RELEASE_LOCK("a");
RELEASE_LOCK("a")
1
delete from t2;
insert into t2 values (1,1), (2,2);
reset master;
select get_lock("a", 20);
get_lock("a", 20)
1
delete from t2 where a=1 or a=bug27563(2) order by a;
kill query ID;
ERROR 70100: Query execution was interrupted
select * from t2 /* must be (1,2), (2,2) */;
a b
1 1
2 2
show master status /* must have the update event more to FD */;
File Position Binlog_Do_DB Binlog_Ignore_DB
master-bin.000001 98
select
(@a:=load_file("MYSQLTEST_VARDIR/tmp/binlog_killed_bug27571.binlog"))
is not null;
(@a:=load_file("MYSQLTEST_VARDIR/tmp/binlog_killed_bug27571.binlog"))
is not null
1
select 0 /* must return 0 to mean the killed query is in */;
0
0
select RELEASE_LOCK("a");
RELEASE_LOCK("a")
1
drop function bug27563;
drop table t1,t2,t3;
end of the tests
mysql-test/t/binlog_killed.test
View file @ 27436f0b
......@@ -55,194 +55,239 @@ enable_result_log;
select @result /* must be zero either way */;
# the functions are either *insensitive* to killing or killing can cause
# strange problmes with the error propagation out of SF's stack
# Bug#27563, Bug#27565, BUG#24971
#
# TODO: use if's block as regression test for the bugs or remove
#
if (0)
{
delimiter |;
create function bug27563()
RETURNS int(11)
DETERMINISTIC
begin
select get_lock("a", 10) into @a;
return 1;
end|
delimiter ;|
# the function is sensitive to killing requiring innodb though with wrong client error
# TO FIX in BUG#27565; TODO: remove --error 1105 afterwards
delimiter |;
create function bug27565()
RETURNS int(11)
DETERMINISTIC
begin
select a from t1 where a=1 into @a for update;
return 1;
end|
delimiter ;|
reset master;
--remove_file $MYSQLTEST_VARDIR/tmp/kill_query_calling_sp.binlog
### ta table case: killing causes rollback
#
# bug#27571 asynchronous setting mysql_`query`::error and Query_log_e::error_code
#
# A. autocommit ON
connection con1;
select get_lock("a", 20);
# checking that killing inside of select loops is safe as before
# killing after the loop can be only simulated - another test
connection con2;
delete from t1;
delete from t2;
insert into t1 values (1,1),(2,2);
let $ID= `select connection_id()`;
send insert into t1 values (bug27563(),1);
#
# simple update
#
connection con1;
eval kill query $ID;
begin; update t1 set b=11 where a=2;
connection con2;
# todo (re-record test): after bugs 27563,27565 got fixed affected rows will report zero
--enable_info
# todo: remove 0 return after fixing Bug#27563
--error 0,ER_QUERY_INTERRUPTED
reap; ### pb: wrong error
--disable_info
###--replace_column 2 # 5 #
### show binlog events from 98 /* nothing in binlog unless Bug#27563 */;
show master status /* must be only FD event unless Bug#27563 */;
select count(*) from t1 /* must be zero unless Bug#27563 */;
# M. multi-statement-ta
connection con2;
let $ID= `select connection_id()`;
begin;
send insert into t1 values (bug27563(),1);
send update t1 set b=b+10;
connection con1;
--replace_result $ID ID
eval kill query $ID;
rollback;
connection con2;
# todo (re-record test): after bugs 27563,27565 got fixed affected rows will report zero
--enable_info
# todo: remove 0 return after fixing Bug#27563
--error 0,ER_QUERY_INTERRUPTED
--error ER_QUERY_INTERRUPTED
reap;
--disable_info
select count(*) from t1 /* must be zero unless Bug#27563 */;
commit;
select * from t1 /* must be the same as before (1,1),(2,2) */;
#
# multi update
# commented out as Bug #31807 multi-update,delete killing does not report with ER_QUERY_INTERRUPTED
# in the way
#
# connection con1;
# begin; update t1 set b=b+10;
# connection con2;
# send update t1 as t_1,t1 as t_2 set t_1.b=11 where t_2.a=2;
### non-ta table case: killing must be recorded in binlog
# connection con1;
# --replace_result $ID ID
# eval kill query $ID;
# rollback;
reset master;
# disable_abort_on_error;
# connection con2;
# --error HY000,ER_QUERY_INTERRUPTED
# reap;
# select * from t1 /* must be the same as before (1,1),(2,2) */;
# enable_abort_on_error;
#
# simple delete
#
connection con1;
begin; delete from t1 where a=2;
connection con2;
let $ID= `select connection_id()`;
send insert into t2 values (bug27563(),1);
send delete from t1 where a=2;
connection con1;
--replace_result $ID ID
eval kill query $ID;
rollback;
connection con2;
# todo: remove 0 return after fixing Bug#27563
--error 0,ER_QUERY_INTERRUPTED
--error ER_QUERY_INTERRUPTED
reap;
select count(*) from t2 /* must be one */;
#show binlog events from 98 /* must have the insert on non-ta table */;
show master status /* must have the insert event more to FD */;
# the value of the error flag of KILLED_QUERY is tested further
select * from t1 /* must be the same as before (1,1),(2,2) */;
connection con1;
select RELEASE_LOCK("a");
#
# multi delete
# the same as for multi-update
#
# connection con1;
# begin; delete from t1 where a=2;
### test with effective killing of SF()
# connection con2;
# send delete t1 from t1 where t1.a=2;
delete from t1;
delete from t2;
insert into t1 values (1,1);
insert into t2 values (1,1);
# connection con1;
# --replace_result $ID ID
# eval kill query $ID;
# rollback;
#
# Bug#27565
# test where KILL is propagated as error to the top level
# still another bug with the error message to the user
# todo: fix reexecute the result file after fixing
#
begin; update t1 set b=0 where a=1;
# connection con2;
# --error 0,ER_QUERY_INTERRUPTED
# reap;
# select * from t1 /* must be the same as before (1,1),(2,2) */;
#
# insert select
#
connection con1;
--disable_warnings
drop table if exists t4;
--enable_warnings
create table t4 (a int, b int) engine=innodb;
insert into t4 values (3, 3);
begin; insert into t1 values (3, 3);
connection con2;
let $ID= `select connection_id()`;
send update t2 set b=bug27565()-1 where a=1;
begin;
send insert into t1 select * from t4 for update;
connection con1;
--replace_result $ID ID
eval kill query $ID;
commit;
rollback;
connection con2;
# todo: fix Bug #27565 killed query of SF() is not reported correctly and
# remove 1105 (wrong)
#--error ER_QUERY_INTERRUPTED
--error 1105,ER_QUERY_INTERRUPTED
reap; ### pb: wrong error
select * from t1 /* must be: (1,0) */;
select * from t2 /* must be as before: (1,1) */;
--error ER_QUERY_INTERRUPTED
reap;
rollback;
select * from t1 /* must be the same as before (1,1),(2,2) */;
drop table t4; # cleanup for the sub-case
###
## non-ta table case: killing must be recorded in binlog
###
delimiter |;
create function bug27563(n int)
RETURNS int(11)
DETERMINISTIC
begin
if n > 1 then
select get_lock("a", 10) into @a;
end if;
return n;
end|
delimiter ;|
## bug#22725 with effective and propagating killing
#
# top-level ta-table
connection con1;
delete from t3;
# update
#
delete from t2;
insert into t2 values (1,1), (2,2);
reset master;
begin; update t1 set b=0 where a=1;
connection con1;
select get_lock("a", 20);
connection con2;
let $ID= `select connection_id()`;
# the query won't perform completely since the function gets interrupted
send insert into t3 values (0,0),(1,bug27565());
send update t2 set b=b + bug27563(b) order by a;
connection con1;
--replace_result $ID ID
eval kill query $ID;
rollback;
connection con2;
# todo: fix Bug #27565 killed query of SF() is not reported correctly and
# remove 1105 (wrong)
#--error ER_QUERY_INTERRUPTED
--error 1105,ER_QUERY_INTERRUPTED
reap; ### pb: wrong error
select count(*) from t3 /* must be zero */;
show master status /* nothing in binlog */;
# top-level non-ta-table
--error ER_QUERY_INTERRUPTED
reap;
select * from t2 /* must be (1,2), (2,2) */;
show master status /* must have the update event more to FD */;
# a proof the query is binlogged with an error
--exec $MYSQL_BINLOG --start-position=98 $MYSQLTEST_VARDIR/log/master-bin.000001 > $MYSQLTEST_VARDIR/tmp/binlog_killed_bug27571.binlog
--replace_result $MYSQLTEST_VARDIR MYSQLTEST_VARDIR
eval select
(@a:=load_file("$MYSQLTEST_VARDIR/tmp/binlog_killed_bug27571.binlog"))
is not null;
--replace_result $MYSQL_TEST_DIR MYSQL_TEST_DIR
let $error_code= `select @a like "%#%error_code=0%" /* must return 0*/`;
eval select $error_code /* must return 0 to mean the killed query is in */;
# cleanup for the sub-case
connection con1;
select RELEASE_LOCK("a");
--remove_file $MYSQLTEST_VARDIR/tmp/binlog_killed_bug27571.binlog
#
# delete
#
delete from t2;
insert into t2 values (1,1), (2,2);
reset master;
begin; update t1 set b=0 where a=1;
connection con1;
select get_lock("a", 20);
connection con2;
let $ID= `select connection_id()`;
# the query won't perform completely since the function gets intrurrupted
send insert into t2 values (0,0),(1,bug27565()) /* non-ta t2 */;
send delete from t2 where a=1 or a=bug27563(2) order by a;
connection con1;
--replace_result $ID ID
eval kill query $ID;
rollback;
connection con2;
# todo: fix Bug #27565 killed query of SF() is not reported correctly and
# remove 1105 (wrong)
#--error ER_QUERY_INTERRUPTED
--error 1105,ER_QUERY_INTERRUPTED
reap; ### pb: wrong error
--error ER_QUERY_INTERRUPTED
reap;
select * from t2 /* must be (1,2), (2,2) */;
show master status /* must have the update event more to FD */;
select count(*) from t2 /* count must be one */;
show master status /* insert into non-ta must be in binlog */;
# a proof the query is binlogged with an error
--exec $MYSQL_BINLOG --start-position=98 $MYSQLTEST_VARDIR/log/master-bin.000001 > $MYSQLTEST_VARDIR/tmp/binlog_killed_bug27571.binlog
--replace_result $MYSQLTEST_VARDIR MYSQLTEST_VARDIR
eval select
(@a:=load_file("$MYSQLTEST_VARDIR/tmp/binlog_killed_bug27571.binlog"))
is not null;
--replace_result $MYSQL_TEST_DIR MYSQL_TEST_DIR
let $error_code= `select @a like "%#%error_code=0%" /* must return 0*/`;
eval select $error_code /* must return 0 to mean the killed query is in */;
# cleanup for the sub-case
connection con1;
select RELEASE_LOCK("a");
--remove_file $MYSQLTEST_VARDIR/tmp/binlog_killed_bug27571.binlog
#
# load data - see simulation tests
#
# bug#27571 cleanup
drop function bug27563;
drop function bug27565;
}
system rm $MYSQLTEST_VARDIR/tmp/kill_query_calling_sp.binlog ;
#
# common cleanup
#
drop table t1,t2,t3;
--echo end of the tests
mysql-test/t/binlog_killed_bug27571-master.opt 0 → 100644
View file @ 27436f0b
--loose-debug=d,stop_after_row_loop_done
mysql-test/t/binlog_killed_bug27571.test 0 → 100644
View file @ 27436f0b
--source include/have_innodb.inc
--source include/not_embedded.inc
--source include/have_log_bin.inc
#
# bug#27571 asynchronous setting mysql_`query`::error and Query_log_e::error_code
#
# Checking that if killing happens inbetween of the end of rows loop and
# recording into binlog that will not lead to recording any error incl
# the killed error.
#
connect (looser, localhost, root,,);
connect (killer, localhost, root,,);
create table t1 (a int auto_increment, b int, PRIMARY KEY (a)) ENGINE=InnoDB;
delete from t1;
insert into t1 values (1,1),(2,2);
reset master;
connection looser;
let $ID= `select connection_id()`;
send update t1 set b=11 where a=2;
connection killer;
sleep 1; # let 1 second for the update to get to the sleeping point
--replace_result $ID ID
eval kill query $ID;
connection looser;
--error 0 # zero even though the query must be got killed while it was sleepin for 5 secs
reap;
#
# this is another possible artifact. The killed error was not caught
# as that is logical as killing was not effective:
# data are ok and well as binlog event is without killed error (further).
# The reason of the following `show error' is to prove that
# killing simulation was effective
#
show errors;
connection killer;
# nothing is rolled back
select * from t1 where a=2 /* must be 11 */;
# a proof the query is binlogged with an error
--exec $MYSQL_BINLOG --start-position=98 $MYSQLTEST_VARDIR/log/master-bin.000001 > $MYSQLTEST_VARDIR/tmp/binlog_killed_bug27571.binlog
--replace_result $MYSQLTEST_VARDIR MYSQLTEST_VARDIR
eval select
(@a:=load_file("$MYSQLTEST_VARDIR/tmp/binlog_killed_bug27571.binlog"))
is not null;
--replace_result $MYSQL_TEST_DIR MYSQL_TEST_DIR
let $error_code= `select @a like "%#%error_code=0%"`;
eval select $error_code /* must return 1*/;
#
# cleanup
#
drop table t1;
--echo end of the tests
mysql-test/t/binlog_killed_simulate-master.opt 0 → 100644
View file @ 27436f0b
--loose-debug=d,simulate_kill_bug27571
mysql-test/t/binlog_killed_simulate.test 0 → 100644
View file @ 27436f0b
#
# bug#27571 asynchronous setting mysql_$query()'s local error and
# Query_log_event::error_code
#
--disable_warnings
drop table if exists t1,t2;
--enable_warnings
#
# Checking that killing upon successful row-loop does not affect binlogging
#
create table t1 (a int) engine=MyISAM;
insert into t1 set a=1;
reset master;
update t1 set a=2 /* will be "killed" after work has been done */;
# a proof the query is binlogged with no error
--exec $MYSQL_BINLOG --start-position=98 $MYSQLTEST_VARDIR/log/master-bin.000001 > $MYSQLTEST_VARDIR/tmp/binlog_killed_bug27571.binlog
--replace_result $MYSQLTEST_VARDIR MYSQLTEST_VARDIR
eval select
(@a:=load_file("$MYSQLTEST_VARDIR/tmp/binlog_killed_bug27571.binlog"))
is not null;
--replace_result $MYSQL_TEST_DIR MYSQL_TEST_DIR
let $error_code= `select @a like "%#%error_code=0%" /* must return 1 */`;
eval select $error_code /* must return 1 as query completed before got killed*/;
# cleanup for the sub-case
system rm $MYSQLTEST_VARDIR/tmp/binlog_killed_bug27571.binlog;
#
# Checking that killing inside of row-loop for LOAD DATA into
# non-transactional table affects binlogging
#
create table t2 (a int, b int) ENGINE=MyISAM;
reset master;
--error ER_QUERY_INTERRUPTED
load data infile '../std_data_ln/rpl_loaddata.dat' into table t2 /* will be "killed" in the middle */;
# a proof the query is binlogged with an error
source include/show_binlog_events.inc;
--exec $MYSQL_BINLOG --start-position=98 $MYSQLTEST_VARDIR/log/master-bin.000001 > $MYSQLTEST_VARDIR/tmp/binlog_killed_bug27571.binlog
--replace_result $MYSQLTEST_VARDIR MYSQLTEST_VARDIR
eval select
(@a:=load_file("$MYSQLTEST_VARDIR/tmp/binlog_killed_bug27571.binlog"))
is not null;
--replace_result $MYSQL_TEST_DIR MYSQL_TEST_DIR
let $error_code= `select @a like "%#%error_code=0%" /* must return 0*/`;
eval select $error_code /* must return 0 to mean the killed query is in */;
# cleanup for the sub-case
system rm $MYSQLTEST_VARDIR/tmp/binlog_killed_bug27571.binlog;
drop table t1,t2;
--echo end of the tests
sql/log_event.cc
View file @ 27436f0b
......@@ -4994,12 +4994,13 @@ int Begin_load_query_log_event::get_create_or_append() const
#ifndef MYSQL_CLIENT
Execute_load_query_log_event::
Execute_load_query_log_event(THD* thd_arg, const char* query_arg,
ulong query_length_arg, uint fn_pos_start_arg,
uint fn_pos_end_arg,
enum_load_dup_handling dup_handling_arg,
bool using_trans, bool suppress_use):
ulong query_length_arg, uint fn_pos_start_arg,
uint fn_pos_end_arg,
enum_load_dup_handling dup_handling_arg,
bool using_trans, bool suppress_use,
THD::killed_state killed_err_arg):
Query_log_event(thd_arg, query_arg, query_length_arg, using_trans,
suppress_use),
suppress_use, killed_err_arg),
file_id(thd_arg->file_id), fn_pos_start(fn_pos_start_arg),
fn_pos_end(fn_pos_end_arg), dup_handling(dup_handling_arg)
{
......
sql/log_event.h
View file @ 27436f0b
......@@ -1619,10 +1619,12 @@ public:
#ifndef MYSQL_CLIENT
Execute_load_query_log_event(THD* thd, const char* query_arg,
ulong query_length, uint fn_pos_start_arg,
uint fn_pos_end_arg,
enum_load_dup_handling dup_handling_arg,
bool using_trans, bool suppress_use);
ulong query_length, uint fn_pos_start_arg,
uint fn_pos_end_arg,
enum_load_dup_handling dup_handling_arg,
bool using_trans, bool suppress_use,
THD::killed_state
killed_err_arg= THD::KILLED_NO_VALUE);
#ifdef HAVE_REPLICATION
void pack_info(Protocol* protocol);
int exec_event(struct st_relay_log_info* rli);
......
sql/sql_delete.cc
View file @ 27436f0b
......@@ -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
}
......
sql/sql_insert.cc
View file @ 27436f0b
......@@ -2936,6 +2936,7 @@ bool select_insert::send_eof()
{
int error, error2;
bool changed, transactional_table= table->file->has_transactions();
THD::killed_state killed_status= thd->killed;
DBUG_ENTER("select_insert::send_eof");
error= (!thd->prelocked_mode) ? table->file->end_bulk_insert():0;
......@@ -2964,7 +2965,7 @@ bool select_insert::send_eof()
if (!error)
thd->clear_error();
Query_log_event qinfo(thd, thd->query, thd->query_length,
transactional_table, FALSE);
transactional_table, FALSE, killed_status);
mysql_bin_log.write(&qinfo);
}
if ((error2=ha_autocommit_or_rollback(thd,error)) && ! error)
......
sql/sql_load.cc
View file @ 27436f0b
......@@ -85,7 +85,8 @@ static int read_sep_field(THD *thd, COPY_INFO &info, TABLE_LIST *table_list,
#ifndef EMBEDDED_LIBRARY
static bool write_execute_load_query_log_event(THD *thd,
bool duplicates, bool ignore,
bool transactional_table);
bool transactional_table,
THD::killed_state killed_status);
#endif /* EMBEDDED_LIBRARY */
/*
......@@ -135,6 +136,7 @@ bool mysql_load(THD *thd,sql_exchange *ex,TABLE_LIST *table_list,
char *tdb= thd->db ? thd->db : db; // Result is never null
ulong skip_lines= ex->skip_lines;
bool transactional_table;
THD::killed_state killed_status= THD::NOT_KILLED;
DBUG_ENTER("mysql_load");
#ifdef EMBEDDED_LIBRARY
......@@ -404,7 +406,16 @@ bool mysql_load(THD *thd,sql_exchange *ex,TABLE_LIST *table_list,
free_blobs(table); /* if pack_blob was used */
table->copy_blobs=0;
thd->count_cuted_fields= CHECK_FIELD_IGNORE;
/*
simulated killing in the middle of per-row loop
must be effective for binlogging
*/
DBUG_EXECUTE_IF("simulate_kill_bug27571",
{
error=1;
thd->killed= THD::KILL_QUERY;
};);
killed_status= (error == 0)? THD::NOT_KILLED : thd->killed;
/*
We must invalidate the table in query cache before binlog writing and
ha_autocommit_...
......@@ -446,7 +457,8 @@ bool mysql_load(THD *thd,sql_exchange *ex,TABLE_LIST *table_list,
{
if (thd->transaction.stmt.modified_non_trans_table)
write_execute_load_query_log_event(thd, handle_duplicates,
ignore, transactional_table);
ignore, transactional_table,
killed_status);
else
{
Delete_file_log_event d(thd, db, transactional_table);
......@@ -477,7 +489,8 @@ bool mysql_load(THD *thd,sql_exchange *ex,TABLE_LIST *table_list,
read_info.end_io_cache();
if (lf_info.wrote_create_file)
write_execute_load_query_log_event(thd, handle_duplicates,
ignore, transactional_table);
ignore, transactional_table,
killed_status);
}
#endif /*!EMBEDDED_LIBRARY*/
if (transactional_table)
......@@ -504,7 +517,8 @@ err:
/* Not a very useful function; just to avoid duplication of code */
static bool write_execute_load_query_log_event(THD *thd,
bool duplicates, bool ignore,
bool transactional_table)
bool transactional_table,
THD::killed_state killed_err_arg)
{
Execute_load_query_log_event
e(thd, thd->query, thd->query_length,
......@@ -512,7 +526,7 @@ static bool write_execute_load_query_log_event(THD *thd,
(char*)thd->lex->fname_end - (char*)thd->query,
(duplicates == DUP_REPLACE) ? LOAD_DUP_REPLACE :
(ignore ? LOAD_DUP_IGNORE : LOAD_DUP_ERROR),
transactional_table, FALSE);
transactional_table, FALSE, killed_err_arg);
return mysql_bin_log.write(&e);
}
......
sql/sql_update.cc
View file @ 27436f0b
......@@ -134,6 +134,7 @@ int mysql_update(THD *thd,
SELECT_LEX *select_lex= &thd->lex->select_lex;
bool need_reopen;
List<Item> all_fields;
THD::killed_state killed_status= THD::NOT_KILLED;
DBUG_ENTER("mysql_update");
LINT_INIT(timestamp_query_id);
......@@ -519,43 +520,26 @@ int mysql_update(THD *thd,
table->file->unlock_row();
thd->row_count++;
}
/*
Caching the killed status to pass as the arg to query event constuctor;
The cached value can not change whereas the killed status can
(externally) since this point and change of the latter won't affect
binlogging.
It's assumed that if an error was set in combination with an effective
killed status then the error is due to killing.
*/
killed_status= thd->killed; // get the status of the volatile
// simulated killing after the loop must be ineffective for binlogging
DBUG_EXECUTE_IF("simulate_kill_bug27571",
{
thd->killed= THD::KILL_QUERY;
};);
error= (killed_status == THD::NOT_KILLED)? error : 1;
if (!transactional_table && updated > 0)
thd->transaction.stmt.modified_non_trans_table= TRUE;
/*
todo bug#27571: to avoid asynchronization of `error' and
`error_code' of binlog event constructor
The concept, which is a bit different for insert(!), is to
replace `error' assignment with the following lines
killed_status= thd->killed; // get the status of the volatile
Notice: thd->killed is type of "state" whereas the lhs has
"status" the suffix which translates according to WordNet: a state
at a particular time - at the time of the end of per-row loop in
our case. Binlogging ops are conducted with the status.
error= (killed_status == THD::NOT_KILLED)? error : 1;
which applies to most mysql_$query functions.
Event's constructor will accept `killed_status' as an argument:
Query_log_event qinfo(..., killed_status);
thd->killed might be changed after killed_status had got cached and this
won't affect binlogging event but other effects remain.
Open issue: In a case the error happened not because of KILLED -
and then KILLED was caught later still within the loop - we shall
do something to avoid binlogging of incorrect ER_SERVER_SHUTDOWN
error_code.
*/
if (thd->killed && !error)
error= 1; // Aborted
end_read_record(&info);
free_io_cache(table); // If ORDER BY
delete select;
......@@ -587,7 +571,7 @@ int mysql_update(THD *thd,
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; // Rollback update
}
......@@ -1522,6 +1506,11 @@ void multi_update::send_error(uint errcode,const char *err)
*/
if (mysql_bin_log.is_open())
{
/*
THD::killed status might not have been set ON at time of an error
got caught and if happens later the killed error is written
into repl event.
*/
Query_log_event qinfo(thd, thd->query, thd->query_length,
transactional_tables, FALSE);
mysql_bin_log.write(&qinfo);
......@@ -1709,10 +1698,19 @@ err2:
bool multi_update::send_eof()
{
char buff[STRING_BUFFER_USUAL_SIZE];
THD::killed_state killed_status= THD::NOT_KILLED;
thd->proc_info="updating reference tables";
/* Does updates for the last n - 1 tables, returns 0 if ok */
/*
Does updates for the last n - 1 tables, returns 0 if ok;
error takes into account killed status gained in do_updates()
*/
int local_error = (table_count) ? do_updates(0) : 0;
/*
if local_error is not set ON until after do_updates() then
later carried out killing should not affect binlogging.
*/
killed_status= (local_error == 0)? THD::NOT_KILLED : thd->killed;
thd->proc_info= "end";
/* We must invalidate the query cache before binlog writing and
......@@ -1740,7 +1738,7 @@ bool multi_update::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) && trans_safe)
local_error= 1; // Rollback update
}
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment
GitLab Nexedi Edition | About GitLab | About Nexedi | 沪ICP备2021021310号-2 | 沪ICP备2021021310号-7