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
|
--source include/have_ndb.inc
# Some tests with larger blobs
--echo Larger MaxAllowedPacket as this limits the size of Blob MySQLD can handle
show variables like '%max_allowed_packet%';
use test;
create table t1 (a int primary key, b longtext) engine=ndb;
delimiter %;
create procedure heavy_insert(times int, bytes int)
begin
set @x = 0;
repeat
insert into t1 values (1, repeat('B', bytes));
delete from t1 where a=1;
set @x = @x + 1;
until @x = times
end repeat;
insert into t1 values (1, repeat('B', bytes));
end %
create procedure heavy_read(times int)
begin
set @x = 0;
repeat
select a, length(b) from t1 where a=1;
set @x = @x + 1;
until @x = times
end repeat;
end %
delimiter ;%
--echo Set unlimited batch size for reads+writes
set ndb_blob_read_batch_bytes = 0;
set ndb_blob_write_batch_bytes = 0;
--echo Now try a heavy insert - idea is to show SendBuffer overload on insert
--error 0,1297,1297
call heavy_insert(20, 5*1024*1024);
# NOTE don't check for warnings...as it doesnt fail consistenly
delete from t1;
set ndb_blob_write_batch_bytes=100 * 1024;
--echo Now heavy insert should succeed
call heavy_insert(10, 5*1024*1024);
--echo Now heavy read should fail
--disable_result_log
--error 0,1297,1297
call heavy_read(100);
--enable_result_log
# NOTE don't check for warnings...as it doesnt fail consistenly
set ndb_blob_read_batch_bytes=100 * 1024;
--echo Now heavy read should succeed
--disable_result_log
call heavy_read(100);
--enable_result_log
set ndb_blob_write_batch_bytes=0;
set ndb_blob_read_batch_bytes=0;
drop procedure heavy_insert;
drop procedure heavy_read;
drop table t1;
|
