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Commit d4746422 authored by Vicențiu Ciorbaru's avatar Vicențiu Ciorbaru
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MDEV-10092: Server crashes in in ha_heap::rnd_pos / Table_read_cursor::get_next 

The bug was caused by several issues.
2 problems in seek_io_cache. Due to wrong offsets used, we would end up
seeking way too much (first change), or over the intended seek point
(second change). Fixing it requires correctly detecting available data
in buffer (first change), and not using "IO_SIZE alligned" reads. The
second is needed because _my_b_cache_read adjusts the pos_in_file itself
based on read_pos and read_end. Pretending buffer is empty when we want
to force a read will aleviate this problem.

Secondly, the big-table cursors didn't repect the interface definitions
of always returning the rownumber that Table_read_cursor::fetch() would activate.

At the same time, next(), prev() and move_to() should not perform any
row activation.
parent 9fe9fb68
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Inline Side-by-side
Showing with 477 additions and 28 deletions
mysql-test/r/win_big-mdev-10092.result 0 → 100644
View file @ d4746422
#
# MDEV-10092: Server crashes in in ha_heap::rnd_pos / Table_read_cursor::get_next
#
CREATE TABLE `orders` (
`o_orderkey` int(11) NOT NULL,
`o_custkey` double DEFAULT NULL,
`o_orderstatus` char(1) DEFAULT NULL,
`o_totalprice` double DEFAULT NULL,
`o_orderDATE` date DEFAULT NULL,
`o_orderpriority` char(15) DEFAULT NULL,
`o_clerk` char(15) DEFAULT NULL,
`o_shippriority` int(11) DEFAULT NULL,
`o_comment` varchar(79) DEFAULT NULL,
KEY `i_o_orderdate` (`o_orderDATE`),
KEY `i_o_custkey` (`o_custkey`)
) DEFAULT CHARSET=latin1;
create procedure add_data()
begin
INSERT INTO `orders` VALUES (593793,3220,'O',181553.02,'1996-10-12','5-LOW','Clerk#000000921',0,'carefully unusual instructions are final pl');
INSERT INTO `orders` VALUES (593794,4681,'F',32306.35,'1994-03-15','2-HIGH','Clerk#000000776',0,'slyly ironic depths are blithely. final excuses across the unusual instruction');
INSERT INTO `orders` VALUES (593795,7213,'O',206579.47,'1998-03-04','2-HIGH','Clerk#000000746',0,'ruthlessly regular theodolites atop the blith');
INSERT INTO `orders` VALUES (593796,10486,'F',181299.81,'1993-01-13','3-MEDIUM','Clerk#000000787',0,'special theodolites detect slyly. p');
INSERT INTO `orders` VALUES (593797,3316,'O',208149.32,'1996-12-22','1-URGENT','Clerk#000000355',0,'carefully silent theodolites use blithely acco');
INSERT INTO `orders` VALUES (593798,1613,'F',254625.5,'1995-01-26','2-HIGH','Clerk#000000504',0,'fluffily even requests ar');
INSERT INTO `orders` VALUES (593799,4418,'F',45122.99,'1993-07-12','1-URGENT','Clerk#000000838',0,'blithely ironic ideas boost furiously above the ironic foxes. special pac');
INSERT INTO `orders` VALUES (593824,12013,'F',216314.23,'1992-02-28','1-URGENT','Clerk#000000074',0,'quickly furious requests play above the fur');
INSERT INTO `orders` VALUES (593825,8101,'O',123101.26,'1997-01-23','5-LOW','Clerk#000000649',0,'regular deposits haggle after the carefully i');
INSERT INTO `orders` VALUES (593826,6958,'O',280097.59,'1995-12-14','2-HIGH','Clerk#000000080',0,'slyly even ideas about the slyly pending escapades cajole above th');
INSERT INTO `orders` VALUES (593827,14116,'O',103011.78,'1995-12-16','3-MEDIUM','Clerk#000000567',0,'blithely bold decoys are furiously. fluffy deposits serve flu');
INSERT INTO `orders` VALUES (593828,6839,'F',106697.51,'1993-12-11','4-NOT SPECIFIED','Clerk#000000065',0,'carefully final theodolites wake quickly final theodolites! unus');
INSERT INTO `orders` VALUES (593829,14605,'O',44147.73,'1997-02-18','3-MEDIUM','Clerk#000000474',0,'ironic requests use carefully against the iro');
INSERT INTO `orders` VALUES (593830,12976,'F',167393.6,'1994-06-21','1-URGENT','Clerk#000000424',0,'dolphins haggle careful');
INSERT INTO `orders` VALUES (593831,14107,'O',208417.51,'1997-11-18','4-NOT SPECIFIED','Clerk#000000336',0,'furiously express pinto beans after the blithely pending requests need to ');
INSERT INTO `orders` VALUES (593856,5623,'O',143236.09,'1998-03-24','5-LOW','Clerk#000000382',0,'carefully ironic accounts impress slyly according to the ironic');
INSERT INTO `orders` VALUES (593857,1828,'O',217673.82,'1996-01-12','1-URGENT','Clerk#000000060',0,'special, special pinto beans haggle blithely. blithel');
INSERT INTO `orders` VALUES (593858,14755,'O',8032.07,'1997-07-20','4-NOT SPECIFIED','Clerk#000000110',0,'regular excuses use ironic pinto ');
INSERT INTO `orders` VALUES (593859,8780,'F',356852.14,'1992-10-09','2-HIGH','Clerk#000000510',0,'furiously regular accounts eat across the carefully ');
INSERT INTO `orders` VALUES (593860,13318,'O',18413.14,'1998-01-10','2-HIGH','Clerk#000000673',0,'pending pains cajole furiously alo');
INSERT INTO `orders` VALUES (593861,1175,'O',28859.21,'1996-09-10','4-NOT SPECIFIED','Clerk#000000680',0,'carefully silent instructi');
INSERT INTO `orders` VALUES (593862,7787,'F',202891.72,'1992-02-27','5-LOW','Clerk#000000988',0,'slyly express requests sleep. express dependencies wake bli');
INSERT INTO `orders` VALUES (593863,1897,'O',33062.05,'1998-06-29','1-URGENT','Clerk#000000117',0,'accounts integrate carefully across the fluffily even warhorses');
INSERT INTO `orders` VALUES (593888,5656,'O',20952.26,'1997-02-04','3-MEDIUM','Clerk#000000735',0,'requests could have to cajole about the special, final ');
INSERT INTO `orders` VALUES (593889,2692,'F',282718.42,'1992-08-02','4-NOT SPECIFIED','Clerk#000000669',0,'regular deposits haggle fluff');
INSERT INTO `orders` VALUES (593890,3685,'O',34012.74,'1996-06-17','5-LOW','Clerk#000000993',0,'furiously even requests');
INSERT INTO `orders` VALUES (593891,10333,'F',182791.4,'1993-01-23','4-NOT SPECIFIED','Clerk#000000098',0,'slyly final platelets doubt');
INSERT INTO `orders` VALUES (593892,5687,'F',224381.48,'1994-09-18','2-HIGH','Clerk#000000294',0,'blithely bold epitaphs sleep after the carefully express in');
INSERT INTO `orders` VALUES (593893,5437,'F',124300.91,'1993-08-04','4-NOT SPECIFIED','Clerk#000000302',0,'daring instructions alongside of the si');
INSERT INTO `orders` VALUES (593894,1732,'F',150438.64,'1993-11-07','3-MEDIUM','Clerk#000000046',0,'quickly special accounts integrate by the even, dogged platelets? slowly ');
INSERT INTO `orders` VALUES (593895,12230,'O',47380.97,'1997-03-23','2-HIGH','Clerk#000000168',0,'fluffily permanent instructions alongside of the furiously even pack');
INSERT INTO `orders` VALUES (593920,13871,'F',2919.68,'1992-01-29','5-LOW','Clerk#000000597',0,'quickly regular foxes across the furiously bold accounts wake car');
INSERT INTO `orders` VALUES (593921,6664,'F',139065.79,'1992-04-21','5-LOW','Clerk#000000017',0,'fluffily final deposits are carefully. quickly special pinto beans bel');
INSERT INTO `orders` VALUES (593922,2504,'O',179041.45,'1997-04-05','2-HIGH','Clerk#000000902',0,'final pinto beans are furiously. ');
INSERT INTO `orders` VALUES (593923,4978,'O',258843,'1998-02-27','1-URGENT','Clerk#000000654',0,'carefully final asymptotes according to the regular dependencie');
INSERT INTO `orders` VALUES (593924,7550,'O',232280.81,'1995-10-28','3-MEDIUM','Clerk#000000063',0,'fluffily ironic packages haggle carefully pending platelets. q');
INSERT INTO `orders` VALUES (593925,12226,'O',319755.48,'1995-09-01','3-MEDIUM','Clerk#000000308',0,'quickly pending packages throughout the quickly unusual requests');
INSERT INTO `orders` VALUES (593926,2819,'F',204662.4,'1994-11-07','4-NOT SPECIFIED','Clerk#000000298',0,'blithely special grouches cajole ironic instructions. slyly pendin');
INSERT INTO `orders` VALUES (593927,593,'F',188162.64,'1995-03-04','1-URGENT','Clerk#000000263',0,'express, unusual deposits boost furiously after the unusual dolphi');
INSERT INTO `orders` VALUES (593952,9362,'P',318688.16,'1995-03-05','4-NOT SPECIFIED','Clerk#000000468',0,'ruthless requests must have to are carefully? special pa');
INSERT INTO `orders` VALUES (593953,11410,'O',166717.28,'1998-07-29','5-LOW','Clerk#000000509',0,'even, regular instructions snooze. slyly ironic packages nag fluffily.');
INSERT INTO `orders` VALUES (593954,8875,'O',132909.37,'1996-08-29','3-MEDIUM','Clerk#000000825',0,'special decoys integrate carefully. care');
INSERT INTO `orders` VALUES (593955,12494,'O',73329.07,'1995-08-05','1-URGENT','Clerk#000000561',0,'quickly special request');
INSERT INTO `orders` VALUES (593956,1390,'O',187837.11,'1995-10-17','5-LOW','Clerk#000000797',0,'silent, pending foxes');
INSERT INTO `orders` VALUES (593957,10106,'F',196969.46,'1993-04-03','2-HIGH','Clerk#000000566',0,'blithely ruthless excuses boost slyly about the requests. careful');
INSERT INTO `orders` VALUES (593958,14770,'F',103528.82,'1993-12-27','3-MEDIUM','Clerk#000000598',0,'carefully special deposits eat above the q');
INSERT INTO `orders` VALUES (593959,14566,'O',156600.32,'1996-11-16','2-HIGH','Clerk#000000030',0,'accounts are quickly bold packages. carefully ironic depos');
INSERT INTO `orders` VALUES (593984,4924,'O',47149.15,'1995-05-06','3-MEDIUM','Clerk#000000120',0,'regular asymptotes haggle slyly abo');
INSERT INTO `orders` VALUES (593985,5185,'O',152533.91,'1997-08-04','3-MEDIUM','Clerk#000000575',0,'blithely special dolphins are even requests. carefully eve');
INSERT INTO `orders` VALUES (593986,14257,'O',109734.28,'1998-06-05','3-MEDIUM','Clerk#000000930',0,'carefully final instructions against the slyly');
INSERT INTO `orders` VALUES (593987,5818,'F',64541.52,'1994-04-13','3-MEDIUM','Clerk#000000259',0,'slyly pending deposits are furiously. regular requests h');
INSERT INTO `orders` VALUES (593988,1178,'F',249608.42,'1994-10-01','2-HIGH','Clerk#000000266',0,'fluffily regular foxes toward the furiously bold accounts sleep furiously');
INSERT INTO `orders` VALUES (593989,5173,'P',61508.55,'1995-03-02','2-HIGH','Clerk#000000374',0,'slyly express deposits wake between ');
INSERT INTO `orders` VALUES (593990,8395,'O',129696.17,'1997-12-30','4-NOT SPECIFIED','Clerk#000000570',0,'carefully final requests haggle furiously fluffily final accou');
INSERT INTO `orders` VALUES (593991,1894,'O',145691.27,'1998-04-09','5-LOW','Clerk#000000294',0,'slyly final notornis haggle carefull');
INSERT INTO `orders` VALUES (594016,14935,'F',144592.29,'1992-10-20','3-MEDIUM','Clerk#000000602',0,'furiously express ideas cajole quickl');
INSERT INTO `orders` VALUES (594017,892,'F',147267.55,'1994-12-10','1-URGENT','Clerk#000000419',0,'close, pending packages affix blithely. slyly regular reque');
end;
//
call add_data();
call add_data();
set sort_buffer_size = 1024;
flush status;
select o_custkey, Avg(o_custkey) OVER ( ORDER BY o_custkey ) from orders;
o_custkey Avg(o_custkey) OVER ( ORDER BY o_custkey )
593 593
593 593
892 742.5
892 742.5
1175 886.6666666666666
1175 886.6666666666666
1178 959.5
1178 959.5
1390 1045.6
1390 1045.6
1613 1140.1666666666667
1613 1140.1666666666667
1732 1224.7142857142858
1732 1224.7142857142858
1828 1300.125
1828 1300.125
1894 1366.111111111111
1894 1366.111111111111
1897 1419.2
1897 1419.2
2504 1517.8181818181818
2504 1517.8181818181818
2692 1615.6666666666667
2692 1615.6666666666667
2819 1708.2307692307693
2819 1708.2307692307693
3220 1816.2142857142858
3220 1816.2142857142858
3316 1916.2
3316 1916.2
3685 2026.75
3685 2026.75
4418 2167.4117647058824
4418 2167.4117647058824
4681 2307.0555555555557
4681 2307.0555555555557
4924 2444.7894736842104
4924 2444.7894736842104
4978 2571.45
4978 2571.45
5173 2695.3333333333335
5173 2695.3333333333335
5185 2808.5
5185 2808.5
5437 2922.782608695652
5437 2922.782608695652
5623 3035.2916666666665
5623 3035.2916666666665
5656 3140.12
5656 3140.12
5687 3238.076923076923
5687 3238.076923076923
5818 3333.6296296296296
5818 3333.6296296296296
6664 3452.5714285714284
6664 3452.5714285714284
6839 3569.344827586207
6839 3569.344827586207
6958 3682.3
6958 3682.3
7213 3796.1935483870966
7213 3796.1935483870966
7550 3913.5
7550 3913.5
7787 4030.878787878788
7787 4030.878787878788
8101 4150.588235294118
8101 4150.588235294118
8395 4271.857142857143
8395 4271.857142857143
8780 4397.083333333333
8780 4397.083333333333
8875 4518.108108108108
8875 4518.108108108108
9362 4645.578947368421
9362 4645.578947368421
10106 4785.589743589743
10106 4785.589743589743
10333 4924.275
10333 4924.275
10486 5059.926829268293
10486 5059.926829268293
11410 5211.119047619048
11410 5211.119047619048
12013 5369.302325581395
12013 5369.302325581395
12226 5525.136363636364
12226 5525.136363636364
12230 5674.133333333333
12230 5674.133333333333
12494 5822.391304347826
12494 5822.391304347826
12976 5974.595744680851
12976 5974.595744680851
13318 6127.583333333333
13318 6127.583333333333
13871 6285.6122448979595
13871 6285.6122448979595
14107 6442.04
14107 6442.04
14116 6592.509803921569
14116 6592.509803921569
14257 6739.903846153846
14257 6739.903846153846
14566 6887.566037735849
14566 6887.566037735849
14605 7030.481481481482
14605 7030.481481481482
14755 7170.927272727273
14755 7170.927272727273
14770 7306.625
14770 7306.625
14935 7440.456140350877
14935 7440.456140350877
select variable_name,
case when variable_value > 0 then 'WITH PASSES' else 'NO PASSES' end
from information_schema.session_status
where variable_name like 'Sort_merge_passes';
variable_name case when variable_value > 0 then 'WITH PASSES' else 'NO PASSES' end
SORT_MERGE_PASSES WITH PASSES
flush status;
select o_custkey, Avg(o_custkey) OVER ( ORDER BY o_custkey RANGE CURRENT ROW ) from orders;
o_custkey Avg(o_custkey) OVER ( ORDER BY o_custkey RANGE CURRENT ROW )
593 593
593 593
892 892
892 892
1175 1175
1175 1175
1178 1178
1178 1178
1390 1390
1390 1390
1613 1613
1613 1613
1732 1732
1732 1732
1828 1828
1828 1828
1894 1894
1894 1894
1897 1897
1897 1897
2504 2504
2504 2504
2692 2692
2692 2692
2819 2819
2819 2819
3220 3220
3220 3220
3316 3316
3316 3316
3685 3685
3685 3685
4418 4418
4418 4418
4681 4681
4681 4681
4924 4924
4924 4924
4978 4978
4978 4978
5173 5173
5173 5173
5185 5185
5185 5185
5437 5437
5437 5437
5623 5623
5623 5623
5656 5656
5656 5656
5687 5687
5687 5687
5818 5818
5818 5818
6664 6664
6664 6664
6839 6839
6839 6839
6958 6958
6958 6958
7213 7213
7213 7213
7550 7550
7550 7550
7787 7787
7787 7787
8101 8101
8101 8101
8395 8395
8395 8395
8780 8780
8780 8780
8875 8875
8875 8875
9362 9362
9362 9362
10106 10106
10106 10106
10333 10333
10333 10333
10486 10486
10486 10486
11410 11410
11410 11410
12013 12013
12013 12013
12226 12226
12226 12226
12230 12230
12230 12230
12494 12494
12494 12494
12976 12976
12976 12976
13318 13318
13318 13318
13871 13871
13871 13871
14107 14107
14107 14107
14116 14116
14116 14116
14257 14257
14257 14257
14566 14566
14566 14566
14605 14605
14605 14605
14755 14755
14755 14755
14770 14770
14770 14770
14935 14935
14935 14935
select variable_name,
case when variable_value > 0 then 'WITH PASSES' else 'NO PASSES' end
from information_schema.session_status
where variable_name like 'Sort_merge_passes';
variable_name case when variable_value > 0 then 'WITH PASSES' else 'NO PASSES' end
SORT_MERGE_PASSES WITH PASSES
drop table orders;
drop procedure add_data;
mysql-test/t/win_big-mdev-10092.test 0 → 100644
View file @ d4746422
--echo #
--echo # MDEV-10092: Server crashes in in ha_heap::rnd_pos / Table_read_cursor::get_next
--echo #
CREATE TABLE `orders` (
`o_orderkey` int(11) NOT NULL,
`o_custkey` double DEFAULT NULL,
`o_orderstatus` char(1) DEFAULT NULL,
`o_totalprice` double DEFAULT NULL,
`o_orderDATE` date DEFAULT NULL,
`o_orderpriority` char(15) DEFAULT NULL,
`o_clerk` char(15) DEFAULT NULL,
`o_shippriority` int(11) DEFAULT NULL,
`o_comment` varchar(79) DEFAULT NULL,
KEY `i_o_orderdate` (`o_orderDATE`),
KEY `i_o_custkey` (`o_custkey`)
) DEFAULT CHARSET=latin1;
delimiter //;
create procedure add_data()
begin
INSERT INTO `orders` VALUES (593793,3220,'O',181553.02,'1996-10-12','5-LOW','Clerk#000000921',0,'carefully unusual instructions are final pl');
INSERT INTO `orders` VALUES (593794,4681,'F',32306.35,'1994-03-15','2-HIGH','Clerk#000000776',0,'slyly ironic depths are blithely. final excuses across the unusual instruction');
INSERT INTO `orders` VALUES (593795,7213,'O',206579.47,'1998-03-04','2-HIGH','Clerk#000000746',0,'ruthlessly regular theodolites atop the blith');
INSERT INTO `orders` VALUES (593796,10486,'F',181299.81,'1993-01-13','3-MEDIUM','Clerk#000000787',0,'special theodolites detect slyly. p');
INSERT INTO `orders` VALUES (593797,3316,'O',208149.32,'1996-12-22','1-URGENT','Clerk#000000355',0,'carefully silent theodolites use blithely acco');
INSERT INTO `orders` VALUES (593798,1613,'F',254625.5,'1995-01-26','2-HIGH','Clerk#000000504',0,'fluffily even requests ar');
INSERT INTO `orders` VALUES (593799,4418,'F',45122.99,'1993-07-12','1-URGENT','Clerk#000000838',0,'blithely ironic ideas boost furiously above the ironic foxes. special pac');
INSERT INTO `orders` VALUES (593824,12013,'F',216314.23,'1992-02-28','1-URGENT','Clerk#000000074',0,'quickly furious requests play above the fur');
INSERT INTO `orders` VALUES (593825,8101,'O',123101.26,'1997-01-23','5-LOW','Clerk#000000649',0,'regular deposits haggle after the carefully i');
INSERT INTO `orders` VALUES (593826,6958,'O',280097.59,'1995-12-14','2-HIGH','Clerk#000000080',0,'slyly even ideas about the slyly pending escapades cajole above th');
INSERT INTO `orders` VALUES (593827,14116,'O',103011.78,'1995-12-16','3-MEDIUM','Clerk#000000567',0,'blithely bold decoys are furiously. fluffy deposits serve flu');
INSERT INTO `orders` VALUES (593828,6839,'F',106697.51,'1993-12-11','4-NOT SPECIFIED','Clerk#000000065',0,'carefully final theodolites wake quickly final theodolites! unus');
INSERT INTO `orders` VALUES (593829,14605,'O',44147.73,'1997-02-18','3-MEDIUM','Clerk#000000474',0,'ironic requests use carefully against the iro');
INSERT INTO `orders` VALUES (593830,12976,'F',167393.6,'1994-06-21','1-URGENT','Clerk#000000424',0,'dolphins haggle careful');
INSERT INTO `orders` VALUES (593831,14107,'O',208417.51,'1997-11-18','4-NOT SPECIFIED','Clerk#000000336',0,'furiously express pinto beans after the blithely pending requests need to ');
INSERT INTO `orders` VALUES (593856,5623,'O',143236.09,'1998-03-24','5-LOW','Clerk#000000382',0,'carefully ironic accounts impress slyly according to the ironic');
INSERT INTO `orders` VALUES (593857,1828,'O',217673.82,'1996-01-12','1-URGENT','Clerk#000000060',0,'special, special pinto beans haggle blithely. blithel');
INSERT INTO `orders` VALUES (593858,14755,'O',8032.07,'1997-07-20','4-NOT SPECIFIED','Clerk#000000110',0,'regular excuses use ironic pinto ');
INSERT INTO `orders` VALUES (593859,8780,'F',356852.14,'1992-10-09','2-HIGH','Clerk#000000510',0,'furiously regular accounts eat across the carefully ');
INSERT INTO `orders` VALUES (593860,13318,'O',18413.14,'1998-01-10','2-HIGH','Clerk#000000673',0,'pending pains cajole furiously alo');
INSERT INTO `orders` VALUES (593861,1175,'O',28859.21,'1996-09-10','4-NOT SPECIFIED','Clerk#000000680',0,'carefully silent instructi');
INSERT INTO `orders` VALUES (593862,7787,'F',202891.72,'1992-02-27','5-LOW','Clerk#000000988',0,'slyly express requests sleep. express dependencies wake bli');
INSERT INTO `orders` VALUES (593863,1897,'O',33062.05,'1998-06-29','1-URGENT','Clerk#000000117',0,'accounts integrate carefully across the fluffily even warhorses');
INSERT INTO `orders` VALUES (593888,5656,'O',20952.26,'1997-02-04','3-MEDIUM','Clerk#000000735',0,'requests could have to cajole about the special, final ');
INSERT INTO `orders` VALUES (593889,2692,'F',282718.42,'1992-08-02','4-NOT SPECIFIED','Clerk#000000669',0,'regular deposits haggle fluff');
INSERT INTO `orders` VALUES (593890,3685,'O',34012.74,'1996-06-17','5-LOW','Clerk#000000993',0,'furiously even requests');
INSERT INTO `orders` VALUES (593891,10333,'F',182791.4,'1993-01-23','4-NOT SPECIFIED','Clerk#000000098',0,'slyly final platelets doubt');
INSERT INTO `orders` VALUES (593892,5687,'F',224381.48,'1994-09-18','2-HIGH','Clerk#000000294',0,'blithely bold epitaphs sleep after the carefully express in');
INSERT INTO `orders` VALUES (593893,5437,'F',124300.91,'1993-08-04','4-NOT SPECIFIED','Clerk#000000302',0,'daring instructions alongside of the si');
INSERT INTO `orders` VALUES (593894,1732,'F',150438.64,'1993-11-07','3-MEDIUM','Clerk#000000046',0,'quickly special accounts integrate by the even, dogged platelets? slowly ');
INSERT INTO `orders` VALUES (593895,12230,'O',47380.97,'1997-03-23','2-HIGH','Clerk#000000168',0,'fluffily permanent instructions alongside of the furiously even pack');
INSERT INTO `orders` VALUES (593920,13871,'F',2919.68,'1992-01-29','5-LOW','Clerk#000000597',0,'quickly regular foxes across the furiously bold accounts wake car');
INSERT INTO `orders` VALUES (593921,6664,'F',139065.79,'1992-04-21','5-LOW','Clerk#000000017',0,'fluffily final deposits are carefully. quickly special pinto beans bel');
INSERT INTO `orders` VALUES (593922,2504,'O',179041.45,'1997-04-05','2-HIGH','Clerk#000000902',0,'final pinto beans are furiously. ');
INSERT INTO `orders` VALUES (593923,4978,'O',258843,'1998-02-27','1-URGENT','Clerk#000000654',0,'carefully final asymptotes according to the regular dependencie');
INSERT INTO `orders` VALUES (593924,7550,'O',232280.81,'1995-10-28','3-MEDIUM','Clerk#000000063',0,'fluffily ironic packages haggle carefully pending platelets. q');
INSERT INTO `orders` VALUES (593925,12226,'O',319755.48,'1995-09-01','3-MEDIUM','Clerk#000000308',0,'quickly pending packages throughout the quickly unusual requests');
INSERT INTO `orders` VALUES (593926,2819,'F',204662.4,'1994-11-07','4-NOT SPECIFIED','Clerk#000000298',0,'blithely special grouches cajole ironic instructions. slyly pendin');
INSERT INTO `orders` VALUES (593927,593,'F',188162.64,'1995-03-04','1-URGENT','Clerk#000000263',0,'express, unusual deposits boost furiously after the unusual dolphi');
INSERT INTO `orders` VALUES (593952,9362,'P',318688.16,'1995-03-05','4-NOT SPECIFIED','Clerk#000000468',0,'ruthless requests must have to are carefully? special pa');
INSERT INTO `orders` VALUES (593953,11410,'O',166717.28,'1998-07-29','5-LOW','Clerk#000000509',0,'even, regular instructions snooze. slyly ironic packages nag fluffily.');
INSERT INTO `orders` VALUES (593954,8875,'O',132909.37,'1996-08-29','3-MEDIUM','Clerk#000000825',0,'special decoys integrate carefully. care');
INSERT INTO `orders` VALUES (593955,12494,'O',73329.07,'1995-08-05','1-URGENT','Clerk#000000561',0,'quickly special request');
INSERT INTO `orders` VALUES (593956,1390,'O',187837.11,'1995-10-17','5-LOW','Clerk#000000797',0,'silent, pending foxes');
INSERT INTO `orders` VALUES (593957,10106,'F',196969.46,'1993-04-03','2-HIGH','Clerk#000000566',0,'blithely ruthless excuses boost slyly about the requests. careful');
INSERT INTO `orders` VALUES (593958,14770,'F',103528.82,'1993-12-27','3-MEDIUM','Clerk#000000598',0,'carefully special deposits eat above the q');
INSERT INTO `orders` VALUES (593959,14566,'O',156600.32,'1996-11-16','2-HIGH','Clerk#000000030',0,'accounts are quickly bold packages. carefully ironic depos');
INSERT INTO `orders` VALUES (593984,4924,'O',47149.15,'1995-05-06','3-MEDIUM','Clerk#000000120',0,'regular asymptotes haggle slyly abo');
INSERT INTO `orders` VALUES (593985,5185,'O',152533.91,'1997-08-04','3-MEDIUM','Clerk#000000575',0,'blithely special dolphins are even requests. carefully eve');
INSERT INTO `orders` VALUES (593986,14257,'O',109734.28,'1998-06-05','3-MEDIUM','Clerk#000000930',0,'carefully final instructions against the slyly');
INSERT INTO `orders` VALUES (593987,5818,'F',64541.52,'1994-04-13','3-MEDIUM','Clerk#000000259',0,'slyly pending deposits are furiously. regular requests h');
INSERT INTO `orders` VALUES (593988,1178,'F',249608.42,'1994-10-01','2-HIGH','Clerk#000000266',0,'fluffily regular foxes toward the furiously bold accounts sleep furiously');
INSERT INTO `orders` VALUES (593989,5173,'P',61508.55,'1995-03-02','2-HIGH','Clerk#000000374',0,'slyly express deposits wake between ');
INSERT INTO `orders` VALUES (593990,8395,'O',129696.17,'1997-12-30','4-NOT SPECIFIED','Clerk#000000570',0,'carefully final requests haggle furiously fluffily final accou');
INSERT INTO `orders` VALUES (593991,1894,'O',145691.27,'1998-04-09','5-LOW','Clerk#000000294',0,'slyly final notornis haggle carefull');
INSERT INTO `orders` VALUES (594016,14935,'F',144592.29,'1992-10-20','3-MEDIUM','Clerk#000000602',0,'furiously express ideas cajole quickl');
INSERT INTO `orders` VALUES (594017,892,'F',147267.55,'1994-12-10','1-URGENT','Clerk#000000419',0,'close, pending packages affix blithely. slyly regular reque');
end;
//
delimiter ;//
call add_data();
call add_data();
set sort_buffer_size = 1024;
flush status;
select o_custkey, Avg(o_custkey) OVER ( ORDER BY o_custkey ) from orders;
select variable_name,
case when variable_value > 0 then 'WITH PASSES' else 'NO PASSES' end
from information_schema.session_status
where variable_name like 'Sort_merge_passes';
flush status;
select o_custkey, Avg(o_custkey) OVER ( ORDER BY o_custkey RANGE CURRENT ROW ) from orders;
select variable_name,
case when variable_value > 0 then 'WITH PASSES' else 'NO PASSES' end
from information_schema.session_status
where variable_name like 'Sort_merge_passes';
drop table orders;
drop procedure add_data;
mysys/mf_iocache.c
View file @ d4746422
......@@ -397,8 +397,9 @@ void end_slave_io_cache(IO_CACHE *cache)
void seek_io_cache(IO_CACHE *cache, my_off_t needed_offset)
{
my_off_t cached_data_start= cache->pos_in_file;
my_off_t cached_data_end= cache->pos_in_file + (cache->read_pos -
my_off_t cached_data_end= cache->pos_in_file + (cache->read_end -
cache->buffer);
if (needed_offset >= cached_data_start &&
needed_offset < cached_data_end)
{
......@@ -416,11 +417,17 @@ void seek_io_cache(IO_CACHE *cache, my_off_t needed_offset)
The offset we're seeking to is not in the buffer.
- Set the buffer to be exhausted.
- Make the next read to a mysql_file_seek() call to the required
offset (but still use aligned reads).
offset.
TODO(cvicentiu, spetrunia) properly implement aligned seeks for
efficiency.
*/
cache->read_pos= cache->read_end;
cache->seek_not_done= 1;
cache->pos_in_file= (needed_offset / IO_SIZE) * IO_SIZE;
cache->pos_in_file= needed_offset;
/* When reading it must appear as if we've started from the offset
that we've seeked here. We must let _my_b_cache_read assume that
by implying "no reading starting from pos_in_file" has happened. */
cache->read_pos= cache->buffer;
cache->read_end= cache->buffer;
}
}
......
sql/sql_window.cc
View file @ d4746422
......@@ -632,9 +632,10 @@ class Rowid_seq_cursor
/* If io_cache=!NULL, use it */
IO_CACHE *io_cache;
uchar *ref_buffer; /* Buffer for the last returned rowid */
uint rownum; /* Number of the rowid that is about to be returned */
bool cache_eof; /* whether we've reached EOF */
ha_rows rownum; /* Number of the rowid that is about to be returned */
ha_rows current_ref_buffer_rownum;
bool ref_buffer_valid;
/* The following are used when we are reading from an array of pointers */
uchar *cache_start;
uchar *cache_pos;
......@@ -655,34 +656,26 @@ class Rowid_seq_cursor
{
//DBUG_ASSERT(info->read_record == rr_from_tempfile);
rownum= 0;
cache_eof= false;
io_cache= (IO_CACHE*)my_malloc(sizeof(IO_CACHE), MYF(0));
init_slave_io_cache(info->io_cache, io_cache);
ref_buffer= (uchar*)my_malloc(ref_length, MYF(0));
ref_buffer_valid= false;
}
}
virtual int next()
{
/* Allow multiple next() calls in EOF state. */
if (at_eof())
return -1;
if (io_cache)
{
if (cache_eof)
return 1;
if (my_b_read(io_cache,ref_buffer,ref_length))
{
cache_eof= 1; // TODO: remove cache_eof
return -1;
}
rownum++;
return 0;
}
else
{
/* Allow multiple next() calls in EOF state. */
if (cache_pos == cache_end)
return -1;
cache_pos+= ref_length;
DBUG_ASSERT(cache_pos <= cache_end);
}
......@@ -696,7 +689,7 @@ class Rowid_seq_cursor
if (rownum == 0)
return -1;
move_to(rownum - 1);
rownum--;
return 0;
}
else
......@@ -722,9 +715,7 @@ class Rowid_seq_cursor
{
if (io_cache)
{
seek_io_cache(io_cache, row_number * ref_length);
rownum= row_number;
Rowid_seq_cursor::next();
}
else
{
......@@ -738,18 +729,36 @@ class Rowid_seq_cursor
{
if (io_cache)
{
return cache_eof;
return rownum * ref_length >= io_cache->end_of_file;
}
else
return (cache_pos == cache_end);
}
uchar *get_curr_rowid()
bool get_curr_rowid(uchar **row_id)
{
if (io_cache)
return ref_buffer;
{
DBUG_ASSERT(!at_eof());
if (!ref_buffer_valid || current_ref_buffer_rownum != rownum)
{
seek_io_cache(io_cache, rownum * ref_length);
if (my_b_read(io_cache,ref_buffer,ref_length))
{
/* Error reading from file. */
return true;
}
ref_buffer_valid= true;
current_ref_buffer_rownum = rownum;
}
*row_id = ref_buffer;
return false;
}
else
return cache_pos;
{
*row_id= cache_pos;
return false;
}
}
};
......@@ -775,7 +784,9 @@ class Table_read_cursor : public Rowid_seq_cursor
if (at_eof())
return -1;
uchar* curr_rowid= get_curr_rowid();
uchar* curr_rowid;
if (get_curr_rowid(&curr_rowid))
return -1;
return table->file->ha_rnd_pos(record, curr_rowid);
}
......
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