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
|
include/master-slave.inc
Warnings:
Note #### Sending passwords in plain text without SSL/TLS is extremely insecure.
Note #### Storing MySQL user name or password information in the master info repository is not secure and is therefore not recommended. Please consider using the USER and PASSWORD connection options for START SLAVE; see the 'START SLAVE Syntax' in the MySQL Manual for more information.
[connection master]
SET @prior_rocksdb_perf_context_level = @@rocksdb_perf_context_level;
SET GLOBAL rocksdb_perf_context_level=3;
SET GLOBAL enable_blind_replace=ON;
create table t1(c1 int,c2 int, primary key (c1)) engine=rocksdb;
insert into t1 values(1,1),(2,2),(3,3);
select * from t1;
c1 c2
1 1
2 2
3 3
create table t2(c1 int,c2 int, primary key (c1)) engine=rocksdb;
insert into t2 values(1,1),(2,2),(3,3);
select * from t2;
c1 c2
1 1
2 2
3 3
create table t3(c1 int,c2 int, primary key (c1)) engine=rocksdb;
insert into t3 values(1,1),(2,2),(3,3);
select * from t3;
c1 c2
1 1
2 2
3 3
SET GLOBAL enable_blind_replace=ON;
create trigger trg before insert on t2 for each row set @a:=1;
alter table t3 add constraint slave_unique_key unique (c2);
connect slave
select variable_value into @d from information_schema.global_status where variable_name='rocksdb_num_get_for_update_calls';
Case 1
connect master
select variable_value into @d from information_schema.global_status where variable_name='rocksdb_num_get_for_update_calls';
replace into t1 values(1,11);
replace into t1 values(2,22);
replace into t1 values(3,33);
select case when variable_value-@d > 3 then 'false' else 'true' end as read_free from information_schema.global_status where variable_name='rocksdb_num_get_for_update_calls';
read_free
true
select * from t1;
c1 c2
1 11
2 22
3 33
connect slave
select case when variable_value-@d > 3 then 'false' else 'true' end as read_free from information_schema.global_status where variable_name='rocksdb_num_get_for_update_calls';
read_free
true
select * from t1;
c1 c2
1 11
2 22
3 33
select variable_value into @d from information_schema.global_status where variable_name='rocksdb_num_get_for_update_calls';
Case 2
connect master
select variable_value into @d from information_schema.global_status where variable_name='rocksdb_num_get_for_update_calls';
replace into t1 values(2,44),(3,55);
select case when variable_value-@d > 2 then 'false' else 'true' end as read_free from information_schema.global_status where variable_name='rocksdb_num_get_for_update_calls';
read_free
true
select * from t1;
c1 c2
1 11
2 44
3 55
connect slave
select case when variable_value-@d > 2 then 'false' else 'true' end as read_free from information_schema.global_status where variable_name='rocksdb_num_get_for_update_calls';
read_free
true
select * from t1;
c1 c2
1 11
2 44
3 55
select variable_value into @d from information_schema.global_status where variable_name='rocksdb_num_get_for_update_calls';
Case 3
connect master
update t1 set c2=66 where c1=3;
select * from t1;
c1 c2
1 11
2 44
3 66
connect slave
select * from t1;
c1 c2
1 11
2 44
3 66
select variable_value into @d from information_schema.global_status where variable_name='rocksdb_num_get_for_update_calls';
Case 4
connect master
select variable_value into @d from information_schema.global_status where variable_name='rocksdb_num_get_for_update_calls';
replace into t2 values(1,111);
replace into t2 values(2,222);
replace into t2 values(3,333);
select case when variable_value-@d > 3 then 'false' else 'true' end as read_free from information_schema.global_status where variable_name='rocksdb_num_get_for_update_calls';
read_free
true
select * from t2;
c1 c2
1 111
2 222
3 333
connect slave
select case when variable_value-@d > 3 then 'false' else 'true' end as read_free from information_schema.global_status where variable_name='rocksdb_num_get_for_update_calls';
read_free
false
select * from t2;
c1 c2
1 111
2 222
3 333
select variable_value into @d from information_schema.global_status where variable_name='rocksdb_num_get_for_update_calls';
Case 5
connect master
select variable_value into @d from information_schema.global_status where variable_name='rocksdb_num_get_for_update_calls';
replace into t3 values(1,1111);
replace into t3 values(2,2222);
replace into t3 values(3,3333);
select * from t3;
c1 c2
1 1111
2 2222
3 3333
select case when variable_value-@d > 3 then 'false' else 'true' end as read_free from information_schema.global_status where variable_name='rocksdb_num_get_for_update_calls';
read_free
true
connect slave
select case when variable_value-@d > 3 then 'false' else 'true' end as read_free from information_schema.global_status where variable_name='rocksdb_num_get_for_update_calls';
read_free
false
select * from t3;
c1 c2
1 1111
2 2222
3 3333
select * from t3 use index (slave_unique_key);
c1 c2
1 1111
2 2222
3 3333
Case 6
include/show_binlog_events.inc
Log_name Pos Event_type Server_id End_log_pos Info
master-bin.000001 # Query # # use `test`; create table t1(c1 int,c2 int, primary key (c1)) engine=rocksdb
master-bin.000001 # Query # # BEGIN
master-bin.000001 # Table_map # # table_id: # (test.t1)
master-bin.000001 # Write_rows # # table_id: # flags: STMT_END_F
master-bin.000001 # Xid # # COMMIT /* XID */
master-bin.000001 # Query # # use `test`; create table t2(c1 int,c2 int, primary key (c1)) engine=rocksdb
master-bin.000001 # Query # # BEGIN
master-bin.000001 # Table_map # # table_id: # (test.t2)
master-bin.000001 # Write_rows # # table_id: # flags: STMT_END_F
master-bin.000001 # Xid # # COMMIT /* XID */
master-bin.000001 # Query # # use `test`; create table t3(c1 int,c2 int, primary key (c1)) engine=rocksdb
master-bin.000001 # Query # # BEGIN
master-bin.000001 # Table_map # # table_id: # (test.t3)
master-bin.000001 # Write_rows # # table_id: # flags: STMT_END_F
master-bin.000001 # Xid # # COMMIT /* XID */
master-bin.000001 # Query # # BEGIN
master-bin.000001 # Table_map # # table_id: # (test.t1)
master-bin.000001 # Write_rows # # table_id: # flags: STMT_END_F
master-bin.000001 # Xid # # COMMIT /* XID */
master-bin.000001 # Query # # BEGIN
master-bin.000001 # Table_map # # table_id: # (test.t1)
master-bin.000001 # Write_rows # # table_id: # flags: STMT_END_F
master-bin.000001 # Xid # # COMMIT /* XID */
master-bin.000001 # Query # # BEGIN
master-bin.000001 # Table_map # # table_id: # (test.t1)
master-bin.000001 # Write_rows # # table_id: # flags: STMT_END_F
master-bin.000001 # Xid # # COMMIT /* XID */
master-bin.000001 # Query # # BEGIN
master-bin.000001 # Table_map # # table_id: # (test.t1)
master-bin.000001 # Write_rows # # table_id: # flags: STMT_END_F
master-bin.000001 # Xid # # COMMIT /* XID */
master-bin.000001 # Query # # BEGIN
master-bin.000001 # Table_map # # table_id: # (test.t1)
master-bin.000001 # Update_rows # # table_id: # flags: STMT_END_F
master-bin.000001 # Xid # # COMMIT /* XID */
master-bin.000001 # Query # # BEGIN
master-bin.000001 # Table_map # # table_id: # (test.t2)
master-bin.000001 # Write_rows # # table_id: # flags: STMT_END_F
master-bin.000001 # Xid # # COMMIT /* XID */
master-bin.000001 # Query # # BEGIN
master-bin.000001 # Table_map # # table_id: # (test.t2)
master-bin.000001 # Write_rows # # table_id: # flags: STMT_END_F
master-bin.000001 # Xid # # COMMIT /* XID */
master-bin.000001 # Query # # BEGIN
master-bin.000001 # Table_map # # table_id: # (test.t2)
master-bin.000001 # Write_rows # # table_id: # flags: STMT_END_F
master-bin.000001 # Xid # # COMMIT /* XID */
master-bin.000001 # Query # # BEGIN
master-bin.000001 # Table_map # # table_id: # (test.t3)
master-bin.000001 # Write_rows # # table_id: # flags: STMT_END_F
master-bin.000001 # Xid # # COMMIT /* XID */
master-bin.000001 # Query # # BEGIN
master-bin.000001 # Table_map # # table_id: # (test.t3)
master-bin.000001 # Write_rows # # table_id: # flags: STMT_END_F
master-bin.000001 # Xid # # COMMIT /* XID */
master-bin.000001 # Query # # BEGIN
master-bin.000001 # Table_map # # table_id: # (test.t3)
master-bin.000001 # Write_rows # # table_id: # flags: STMT_END_F
master-bin.000001 # Xid # # COMMIT /* XID */
include/show_binlog_events.inc
Log_name Pos Event_type Server_id End_log_pos Info
slave-bin.000001 # Query # # use `test`; create table t1(c1 int,c2 int, primary key (c1)) engine=rocksdb
slave-bin.000001 # Query # # BEGIN
slave-bin.000001 # Table_map # # table_id: # (test.t1)
slave-bin.000001 # Write_rows # # table_id: # flags: STMT_END_F
slave-bin.000001 # Xid # # COMMIT /* XID */
slave-bin.000001 # Query # # use `test`; create table t2(c1 int,c2 int, primary key (c1)) engine=rocksdb
slave-bin.000001 # Query # # BEGIN
slave-bin.000001 # Table_map # # table_id: # (test.t2)
slave-bin.000001 # Write_rows # # table_id: # flags: STMT_END_F
slave-bin.000001 # Xid # # COMMIT /* XID */
slave-bin.000001 # Query # # use `test`; create table t3(c1 int,c2 int, primary key (c1)) engine=rocksdb
slave-bin.000001 # Query # # BEGIN
slave-bin.000001 # Table_map # # table_id: # (test.t3)
slave-bin.000001 # Write_rows # # table_id: # flags: STMT_END_F
slave-bin.000001 # Xid # # COMMIT /* XID */
slave-bin.000001 # Query # # use `test`; CREATE DEFINER=`root`@`localhost` trigger trg before insert on t2 for each row set @a:=1
slave-bin.000001 # Query # # use `test`; alter table t3 add constraint slave_unique_key unique (c2)
slave-bin.000001 # Query # # BEGIN
slave-bin.000001 # Table_map # # table_id: # (test.t1)
slave-bin.000001 # Write_rows # # table_id: # flags: STMT_END_F
slave-bin.000001 # Xid # # COMMIT /* XID */
slave-bin.000001 # Query # # BEGIN
slave-bin.000001 # Table_map # # table_id: # (test.t1)
slave-bin.000001 # Write_rows # # table_id: # flags: STMT_END_F
slave-bin.000001 # Xid # # COMMIT /* XID */
slave-bin.000001 # Query # # BEGIN
slave-bin.000001 # Table_map # # table_id: # (test.t1)
slave-bin.000001 # Write_rows # # table_id: # flags: STMT_END_F
slave-bin.000001 # Xid # # COMMIT /* XID */
slave-bin.000001 # Query # # BEGIN
slave-bin.000001 # Table_map # # table_id: # (test.t1)
slave-bin.000001 # Write_rows # # table_id: # flags: STMT_END_F
slave-bin.000001 # Xid # # COMMIT /* XID */
slave-bin.000001 # Query # # BEGIN
slave-bin.000001 # Table_map # # table_id: # (test.t1)
slave-bin.000001 # Update_rows # # table_id: # flags: STMT_END_F
slave-bin.000001 # Xid # # COMMIT /* XID */
slave-bin.000001 # Query # # BEGIN
slave-bin.000001 # Table_map # # table_id: # (test.t2)
slave-bin.000001 # Update_rows # # table_id: # flags: STMT_END_F
slave-bin.000001 # Xid # # COMMIT /* XID */
slave-bin.000001 # Query # # BEGIN
slave-bin.000001 # Table_map # # table_id: # (test.t2)
slave-bin.000001 # Update_rows # # table_id: # flags: STMT_END_F
slave-bin.000001 # Xid # # COMMIT /* XID */
slave-bin.000001 # Query # # BEGIN
slave-bin.000001 # Table_map # # table_id: # (test.t2)
slave-bin.000001 # Update_rows # # table_id: # flags: STMT_END_F
slave-bin.000001 # Xid # # COMMIT /* XID */
slave-bin.000001 # Query # # BEGIN
slave-bin.000001 # Table_map # # table_id: # (test.t3)
slave-bin.000001 # Delete_rows # # table_id: #
slave-bin.000001 # Write_rows # # table_id: # flags: STMT_END_F
slave-bin.000001 # Xid # # COMMIT /* XID */
slave-bin.000001 # Query # # BEGIN
slave-bin.000001 # Table_map # # table_id: # (test.t3)
slave-bin.000001 # Delete_rows # # table_id: #
slave-bin.000001 # Write_rows # # table_id: # flags: STMT_END_F
slave-bin.000001 # Xid # # COMMIT /* XID */
slave-bin.000001 # Query # # BEGIN
slave-bin.000001 # Table_map # # table_id: # (test.t3)
slave-bin.000001 # Delete_rows # # table_id: #
slave-bin.000001 # Write_rows # # table_id: # flags: STMT_END_F
slave-bin.000001 # Xid # # COMMIT /* XID */
drop table t1;
drop table t2;
drop table t3;
SET GLOBAL rocksdb_perf_context_level = @prior_rocksdb_perf_context_level;
SET GLOBAL enable_blind_replace=DEFAULT;
SET GLOBAL enable_blind_replace=DEFAULT;
include/rpl_end.inc
|
