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Bug#36446: Attempt to set @@join_buffer_size to its minimum value produces spurious warning

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If a sys-var has a base and a block-size>1, and then a
user-supplied value >= minimum ended up below minimum
thanks to block-size alignment, we threw a warning.
This meant for instance that when getting, then setting
the minimum, we'd see a warning. This was needlessly
confusing. (updated patch)
This commit is contained in:
Tatiana A. Nurnberg
2009-03-16 16:11:45 +01:00
parent ec39e58d13
commit 611a09f596
3 changed files with 26 additions and 2 deletions
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7
mysql-test/r/variables.result
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@ -27,6 +27,7 @@ set @my_slow_launch_time =@@global.slow_launch_time;
set @my_storage_engine =@@global.storage_engine;
set @my_thread_cache_size =@@global.thread_cache_size;
set @my_max_allowed_packet =@@global.max_allowed_packet;
set @my_join_buffer_size =@@global.join_buffer_size;
set @`test`=1;
select @test, @`test`, @TEST, @`TEST`, @"teSt";
@test @`test` @TEST @`TEST` @"teSt"
@ -1018,6 +1019,11 @@ show variables like 'hostname';
Variable_name Value
hostname #
End of 5.0 tests
set join_buffer_size=1;
Warnings:
Warning 1292 Truncated incorrect join_buffer_size value: '1'
set @save_join_buffer_size=@@join_buffer_size;
set join_buffer_size=@save_join_buffer_size;
set global binlog_cache_size =@my_binlog_cache_size;
set global connect_timeout =@my_connect_timeout;
set global delayed_insert_timeout =@my_delayed_insert_timeout;
@ -1048,6 +1054,7 @@ set global slow_launch_time =@my_slow_launch_time;
set global storage_engine =@my_storage_engine;
set global thread_cache_size =@my_thread_cache_size;
set global max_allowed_packet =@my_max_allowed_packet;
set global join_buffer_size =@my_join_buffer_size;
show global variables where Variable_name='table_definition_cache' or
Variable_name='table_lock_wait_timeout';
Variable_name Value