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#
# Bug #16963396 INNODB: USE OF LARGE EXTERNALLY-STORED FIELDS MAKES
# CRASH RECOVERY LOSE DATA
#
#
# Uncompressed Table - Insert Operation - Crash Test
# Fresh insert with blobs
#
CREATE TABLE t1 (a BIGINT PRIMARY KEY, b LONGBLOB) ENGINE=InnoDB;
INSERT INTO t1 (a, b) VALUES (1, repeat('^', 40000));
INSERT INTO t1 (a, b) VALUES (2, '2');
INSERT INTO t1 (a, b) VALUES (3, '3');
INSERT INTO t1 (a, b) VALUES (4, '4');
INSERT INTO t1 (a, b) VALUES (5, '5');
begin;
INSERT INTO t1 (a, b) VALUES (6, REPEAT('a', 4*1024*1024));
# Kill and restart
SELECT a, right(b, 50) FROM t1;
a right(b, 50)
1 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2 2
3 3
4 4
5 5
#
# Uncompressed Table - UPDATE Operation - Crash Test
# Update of non-blob column so that blob is needed.
#
begin;
UPDATE t1 set b = REPEAT('a', 4*1024*1024) where a = 5 ;
# Kill and restart
SELECT a, right(b, 50) FROM t1;
a right(b, 50)
1 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2 2
3 3
4 4
5 5
#
# Uncompressed Table - UPDATE Operation - Crash Test
# Update of blob column to blob.
#
begin;
UPDATE t1 set b = REPEAT('$', 50000) where a = 1 ;
# Kill and restart
SELECT a, right(b, 50) FROM t1;
a right(b, 50)
1 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2 2
3 3
4 4
5 5
DROP TABLE t1;
#
# Uncompressed Table - Rollback of UPDATE operation
# Update moves offpage data to inline data.
#
create table t2 (f1 bigint primary key, f2 longblob, f3 longblob,
index(f2(10), f3(10))) engine=innodb;
insert into t2 values (10, repeat('.', 40000), repeat('?', 40000));
start transaction;
update t2 set f2 = '=';
select f1, right(f2, 20), right(f3, 20) from t2;
f1 right(f2, 20) right(f3, 20)
10 = ????????????????????
update t2 set f3 = '&';
select f1, right(f2, 20), right(f3, 20) from t2;
f1 right(f2, 20) right(f3, 20)
10 = &
set session debug='d,ib_blob_update_rollback';
rollback;
ERROR HY000: Lost connection to MySQL server during query
select f1, right(f2, 20), right(f3, 20) from t2;
f1 right(f2, 20) right(f3, 20)
10 .................... ????????????????????
check table t2;
Table Op Msg_type Msg_text
test.t2 check status OK
#
# Uncompressed Table - Rollback of UPDATE operation
#
insert into t2 values (20, repeat('.', 40000), repeat('?', 40000));
select f1, right(f2, 20), right(f3, 20) from t2;
f1 right(f2, 20) right(f3, 20)
10 .................... ????????????????????
20 .................... ????????????????????
start transaction;
update t2 set f2 = repeat('$', 60000) where f1 = 20;
select f1, right(f2, 20), right(f3, 20) from t2;
f1 right(f2, 20) right(f3, 20)
10 .................... ????????????????????
20 $$$$$$$$$$$$$$$$$$$$ ????????????????????
SET GLOBAL innodb_log_checkpoint_now=ON;
# Kill the server
# Starting server with --innodb-force-recovery-crash=99
# restart
select f1, right(f2, 20), right(f3, 20) from t2;
f1 right(f2, 20) right(f3, 20)
10 .................... ????????????????????
20 .................... ????????????????????
check table t2;
Table Op Msg_type Msg_text
test.t2 check status OK
drop table t2;
#
# Compressed Table - Insert Operation - Crash Test
# fresh insert with BLOBs
#
set global innodb_compression_level = 0;
create table t3 (f1 bigint primary key, f2 longblob, f3 longblob,
index(f2(10), f3(10))) engine=innodb row_format=compressed;
# Kill and restart
select f1, length(f2), length(f3) from t3;
f1 length(f2) length(f3)
select f1, right(f2, 30), right(f3, 20) from t3;
f1 right(f2, 30) right(f3, 20)
check table t3;
Table Op Msg_type Msg_text
test.t3 check status OK
#
# Compressed Table - Update Operation - Crash Test
# update of a non-BLOB column so that BLOB is needed
#
set global innodb_compression_level = 0;
insert into t3 values (2, repeat('!', 30), repeat('+', 30));
begin;
UPDATE t3 set f2 = repeat('>', 40000) where f1 = 2;
# Kill and restart
select f1, length(f2), length(f3) from t3;
f1 length(f2) length(f3)
2 30 30
select f1, right(f2, 30), right(f3, 20) from t3;
f1 right(f2, 30) right(f3, 20)
2 !!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ++++++++++++++++++++
check table t3;
Table Op Msg_type Msg_text
test.t3 check status OK
#
# Compressed Table - Update Operation - Crash Test
# update blob to blob
#
set global innodb_compression_level = 0;
insert into t3 values (3, repeat('%', 40000), repeat('~', 40000));
begin;
UPDATE t3 set f2 = concat(f2, repeat(',', 10)) where f1 = 3;
# Kill and restart
select f1, length(f2), length(f3) from t3;
f1 length(f2) length(f3)
2 30 30
3 40000 40000
select f1, right(f2, 30), right(f3, 20) from t3;
f1 right(f2, 30) right(f3, 20)
2 !!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ++++++++++++++++++++
3 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%% ~~~~~~~~~~~~~~~~~~~~
check table t3;
Table Op Msg_type Msg_text
test.t3 check status OK
DROP TABLE t3;