1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
|
# Case 1. Extern BLOB with sec index on v_col undergoes UPDATE during online DDL
CREATE TABLE t1 (c1 INT, c2 INT, c3 BLOB, c4 INT AS (c1 + 1), INDEX id(c4) );
INSERT INTO t1 VALUES (1, 1, REPEAT('rocalrulcrcaurcuccoolrouuocacaooaucauualcucuoucucclolcllloocuarcoorlaccarocouuaoorcolloucraoaaooc', 281), DEFAULT);
SELECT c1, c2, c4 FROM t1;
c1 c2 c4
1 1 2
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`c1` int DEFAULT NULL,
`c2` int DEFAULT NULL,
`c3` blob,
`c4` int GENERATED ALWAYS AS ((`c1` + 1)) VIRTUAL,
KEY `id` (`c4`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
SET DEBUG_SYNC='innodb_inplace_alter_table_enter SIGNAL online WAIT_FOR upd';
ALTER TABLE t1 ADD PRIMARY KEY (c1);
SET DEBUG_SYNC='now WAIT_FOR online';
SELECT c1, c2, c4 FROM t1;
c1 c2 c4
1 1 2
UPDATE t1 SET c2=2;
SELECT c1, c2, c4 FROM t1;
c1 c2 c4
1 2 2
SET DEBUG_SYNC='now SIGNAL upd';
SELECT c1, c2, c4 FROM t1;
c1 c2 c4
1 2 2
CHECK TABLE t1;
Table Op Msg_type Msg_text
test.t1 check status OK
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`c1` int NOT NULL,
`c2` int DEFAULT NULL,
`c3` blob,
`c4` int GENERATED ALWAYS AS ((`c1` + 1)) VIRTUAL,
PRIMARY KEY (`c1`),
KEY `id` (`c4`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
DROP TABLE t1;
# Case 2. BLOB with sec index on v_col undergoes UPDATE during online DDL
CREATE TABLE t2 (c1 INT, c2 INT, c3 BLOB, c4 INT AS (c1 + 1), INDEX id(c4) );
INSERT INTO t2 VALUES (1, 1, REPEAT('A', 256), DEFAULT);
SELECT c1, c2, c4 FROM t2;
c1 c2 c4
1 1 2
SHOW CREATE TABLE t2;
Table Create Table
t2 CREATE TABLE `t2` (
`c1` int DEFAULT NULL,
`c2` int DEFAULT NULL,
`c3` blob,
`c4` int GENERATED ALWAYS AS ((`c1` + 1)) VIRTUAL,
KEY `id` (`c4`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
SET DEBUG_SYNC='innodb_inplace_alter_table_enter SIGNAL online WAIT_FOR upd';
ALTER TABLE t2 ADD PRIMARY KEY (c1);
SET DEBUG_SYNC='now WAIT_FOR online';
SELECT c1, c2, c4 FROM t2;
c1 c2 c4
1 1 2
UPDATE t2 SET c2=2;
SELECT c1, c2, c4 FROM t2;
c1 c2 c4
1 2 2
SET DEBUG_SYNC='now SIGNAL upd';
SELECT c1, c2, c4 FROM t2;
c1 c2 c4
1 2 2
CHECK TABLE t2;
Table Op Msg_type Msg_text
test.t2 check status OK
SHOW CREATE TABLE t2;
Table Create Table
t2 CREATE TABLE `t2` (
`c1` int NOT NULL,
`c2` int DEFAULT NULL,
`c3` blob,
`c4` int GENERATED ALWAYS AS ((`c1` + 1)) VIRTUAL,
PRIMARY KEY (`c1`),
KEY `id` (`c4`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
DROP TABLE t2;
# Case 3. (case 1) with update on base column of v_col
CREATE TABLE t3 (c1 INT, c2 INT, c3 BLOB, c4 INT AS (c1 + 1), INDEX id(c4) );
INSERT INTO t3 VALUES (1, 1, REPEAT('rocalrulcrcaurcuccoolrouuocacaooaucauualcucuoucucclolcllloocuarcoorlaccarocouuaoorcolloucraoaaooc', 281), DEFAULT);
SELECT c1, c2, c4 FROM t3;
c1 c2 c4
1 1 2
SHOW CREATE TABLE t3;
Table Create Table
t3 CREATE TABLE `t3` (
`c1` int DEFAULT NULL,
`c2` int DEFAULT NULL,
`c3` blob,
`c4` int GENERATED ALWAYS AS ((`c1` + 1)) VIRTUAL,
KEY `id` (`c4`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
SET DEBUG_SYNC='innodb_inplace_alter_table_enter SIGNAL online WAIT_FOR upd';
ALTER TABLE t3 ADD PRIMARY KEY (c1);
SET DEBUG_SYNC='now WAIT_FOR online';
SELECT c1, c2, c4 FROM t3;
c1 c2 c4
1 1 2
UPDATE t3 SET c1=10;
SELECT c1, c2, c4 FROM t3;
c1 c2 c4
10 1 11
SET DEBUG_SYNC='now SIGNAL upd';
SELECT c1, c2, c4 FROM t3;
c1 c2 c4
10 1 11
CHECK TABLE t3;
Table Op Msg_type Msg_text
test.t3 check status OK
SHOW CREATE TABLE t3;
Table Create Table
t3 CREATE TABLE `t3` (
`c1` int NOT NULL,
`c2` int DEFAULT NULL,
`c3` blob,
`c4` int GENERATED ALWAYS AS ((`c1` + 1)) VIRTUAL,
PRIMARY KEY (`c1`),
KEY `id` (`c4`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
DROP TABLE t3;
# Case 4. (case 2) with update on base column of v_col
CREATE TABLE t4 (c1 INT, c2 INT, c3 BLOB, c4 INT AS (c1 + 1), INDEX id(c4) );
INSERT INTO t4 VALUES (1, 1, REPEAT('A', 256), DEFAULT);
SELECT c1, c2, c4 FROM t4;
c1 c2 c4
1 1 2
SHOW CREATE TABLE t4;
Table Create Table
t4 CREATE TABLE `t4` (
`c1` int DEFAULT NULL,
`c2` int DEFAULT NULL,
`c3` blob,
`c4` int GENERATED ALWAYS AS ((`c1` + 1)) VIRTUAL,
KEY `id` (`c4`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
SET DEBUG_SYNC='innodb_inplace_alter_table_enter SIGNAL online WAIT_FOR upd';
ALTER TABLE t4 ADD PRIMARY KEY (c1);
SET DEBUG_SYNC='now WAIT_FOR online';
SELECT c1, c2, c4 FROM t4;
c1 c2 c4
1 1 2
UPDATE t4 SET c1=10;
SELECT c1, c2, c4 FROM t4;
c1 c2 c4
10 1 11
SET DEBUG_SYNC='now SIGNAL upd';
SELECT c1, c2, c4 FROM t4;
c1 c2 c4
10 1 11
CHECK TABLE t4;
Table Op Msg_type Msg_text
test.t4 check status OK
SHOW CREATE TABLE t4;
Table Create Table
t4 CREATE TABLE `t4` (
`c1` int NOT NULL,
`c2` int DEFAULT NULL,
`c3` blob,
`c4` int GENERATED ALWAYS AS ((`c1` + 1)) VIRTUAL,
PRIMARY KEY (`c1`),
KEY `id` (`c4`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
DROP TABLE t4;
# Case 5. (case 1) with update on BLOB without changing extern status
CREATE TABLE t5 (c1 INT, c2 INT, c3 BLOB, c4 INT AS (c1 + 1), INDEX id(c4) );
INSERT INTO t5 VALUES (1, 1, REPEAT('rocalrulcrcaurcuccoolrouuocacaooaucauualcucuoucucclolcllloocuarcoorlaccarocouuaoorcolloucraoaaooc', 281), DEFAULT);
SELECT c1, c2, c4 FROM t5;
c1 c2 c4
1 1 2
SHOW CREATE TABLE t5;
Table Create Table
t5 CREATE TABLE `t5` (
`c1` int DEFAULT NULL,
`c2` int DEFAULT NULL,
`c3` blob,
`c4` int GENERATED ALWAYS AS ((`c1` + 1)) VIRTUAL,
KEY `id` (`c4`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
SET DEBUG_SYNC='innodb_inplace_alter_table_enter SIGNAL online WAIT_FOR upd';
ALTER TABLE t5 ADD PRIMARY KEY (c1);
SET DEBUG_SYNC='now WAIT_FOR online';
SELECT c1, c2, c4 FROM t5;
c1 c2 c4
1 1 2
UPDATE t5 SET c3=REPEAT('abcdefghcrcaurcuccoolrouuocacaooaucauualcucuoucucclolcllloocuarcoorlaccarocouuaoorcolloucraoaaooc', 281);
UPDATE t5 SET c2=2;
UPDATE t5 SET c1=10;
SELECT c1, c2, c4 FROM t5;
c1 c2 c4
10 2 11
SET DEBUG_SYNC='now SIGNAL upd';
SELECT c1, c2, c4 FROM t5;
c1 c2 c4
10 2 11
CHECK TABLE t5;
Table Op Msg_type Msg_text
test.t5 check status OK
SHOW CREATE TABLE t5;
Table Create Table
t5 CREATE TABLE `t5` (
`c1` int NOT NULL,
`c2` int DEFAULT NULL,
`c3` blob,
`c4` int GENERATED ALWAYS AS ((`c1` + 1)) VIRTUAL,
PRIMARY KEY (`c1`),
KEY `id` (`c4`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
DROP TABLE t5;
# Case 6. (case 2) with update on BLOB without changing extern status
CREATE TABLE t6 (c1 INT, c2 INT, c3 BLOB, c4 INT AS (c1 + 1), INDEX id(c4) );
INSERT INTO t6 VALUES (1, 1, REPEAT('A', 256), DEFAULT);
SELECT c1, c2, c4 FROM t6;
c1 c2 c4
1 1 2
SHOW CREATE TABLE t6;
Table Create Table
t6 CREATE TABLE `t6` (
`c1` int DEFAULT NULL,
`c2` int DEFAULT NULL,
`c3` blob,
`c4` int GENERATED ALWAYS AS ((`c1` + 1)) VIRTUAL,
KEY `id` (`c4`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
SET DEBUG_SYNC='innodb_inplace_alter_table_enter SIGNAL online WAIT_FOR upd';
ALTER TABLE t6 ADD PRIMARY KEY (c1);
SET DEBUG_SYNC='now WAIT_FOR online';
SELECT c1, c2, c4 FROM t6;
c1 c2 c4
1 1 2
UPDATE t6 SET c3=REPEAT('B', 256);
UPDATE t6 SET c2=2;
UPDATE t6 SET c1=10;
SELECT c1, c2, c4 FROM t6;
c1 c2 c4
10 2 11
SET DEBUG_SYNC='now SIGNAL upd';
SELECT c1, c2, c4 FROM t6;
c1 c2 c4
10 2 11
CHECK TABLE t6;
Table Op Msg_type Msg_text
test.t6 check status OK
SHOW CREATE TABLE t6;
Table Create Table
t6 CREATE TABLE `t6` (
`c1` int NOT NULL,
`c2` int DEFAULT NULL,
`c3` blob,
`c4` int GENERATED ALWAYS AS ((`c1` + 1)) VIRTUAL,
PRIMARY KEY (`c1`),
KEY `id` (`c4`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
DROP TABLE t6;
# Case 7. (case 1) with update on BLOB inverting BLOB's extern status
CREATE TABLE t7 (c1 INT, c2 INT, c3 BLOB, c4 INT AS (c1 + 1), INDEX id(c4) );
INSERT INTO t7 VALUES (1, 1, REPEAT('rocalrulcrcaurcuccoolrouuocacaooaucauualcucuoucucclolcllloocuarcoorlaccarocouuaoorcolloucraoaaooc', 281), DEFAULT);
SELECT c1, c2, c4 FROM t7;
c1 c2 c4
1 1 2
SHOW CREATE TABLE t7;
Table Create Table
t7 CREATE TABLE `t7` (
`c1` int DEFAULT NULL,
`c2` int DEFAULT NULL,
`c3` blob,
`c4` int GENERATED ALWAYS AS ((`c1` + 1)) VIRTUAL,
KEY `id` (`c4`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
SET DEBUG_SYNC='innodb_inplace_alter_table_enter SIGNAL online WAIT_FOR upd';
ALTER TABLE t7 ADD PRIMARY KEY (c1);
SET DEBUG_SYNC='now WAIT_FOR online';
SELECT c1, c2, c4 FROM t7;
c1 c2 c4
1 1 2
UPDATE t7 SET c3=REPEAT('B', 256);
UPDATE t7 SET c2=2;
UPDATE t7 SET c1=10;
SELECT c1, c2, c4 FROM t7;
c1 c2 c4
10 2 11
SET DEBUG_SYNC='now SIGNAL upd';
SELECT c1, c2, c4 FROM t7;
c1 c2 c4
10 2 11
CHECK TABLE t7;
Table Op Msg_type Msg_text
test.t7 check status OK
SHOW CREATE TABLE t7;
Table Create Table
t7 CREATE TABLE `t7` (
`c1` int NOT NULL,
`c2` int DEFAULT NULL,
`c3` blob,
`c4` int GENERATED ALWAYS AS ((`c1` + 1)) VIRTUAL,
PRIMARY KEY (`c1`),
KEY `id` (`c4`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
DROP TABLE t7;
# Case 8. (case 2) with update on BLOB inverting BLOB's extern status
CREATE TABLE t8 (c1 INT, c2 INT, c3 BLOB, c4 INT AS (c1 + 1), INDEX id(c4) );
INSERT INTO t8 VALUES (1, 1, REPEAT('A', 256), DEFAULT);
SELECT c1, c2, c4 FROM t8;
c1 c2 c4
1 1 2
SHOW CREATE TABLE t8;
Table Create Table
t8 CREATE TABLE `t8` (
`c1` int DEFAULT NULL,
`c2` int DEFAULT NULL,
`c3` blob,
`c4` int GENERATED ALWAYS AS ((`c1` + 1)) VIRTUAL,
KEY `id` (`c4`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
SET DEBUG_SYNC='innodb_inplace_alter_table_enter SIGNAL online WAIT_FOR upd';
ALTER TABLE t8 ADD PRIMARY KEY (c1);
SET DEBUG_SYNC='now WAIT_FOR online';
SELECT c1, c2, c4 FROM t8;
c1 c2 c4
1 1 2
UPDATE t8 SET c3=REPEAT('abcdefghcrcaurcuccoolrouuocacaooaucauualcucuoucucclolcllloocuarcoorlaccarocouuaoorcolloucraoaaooc', 281);
UPDATE t8 SET c2=2;
UPDATE t8 SET c1=10;
SELECT c1, c2, c4 FROM t8;
c1 c2 c4
10 2 11
SET DEBUG_SYNC='now SIGNAL upd';
SELECT c1, c2, c4 FROM t8;
c1 c2 c4
10 2 11
CHECK TABLE t8;
Table Op Msg_type Msg_text
test.t8 check status OK
SHOW CREATE TABLE t8;
Table Create Table
t8 CREATE TABLE `t8` (
`c1` int NOT NULL,
`c2` int DEFAULT NULL,
`c3` blob,
`c4` int GENERATED ALWAYS AS ((`c1` + 1)) VIRTUAL,
PRIMARY KEY (`c1`),
KEY `id` (`c4`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
DROP TABLE t8;
|
