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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 7ca1ebd83a
commit 5867396a8d
3 changed files with 26 additions and 2 deletions
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15
mysql-test/t/variables.test
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@ -36,6 +36,7 @@ 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;
# case insensitivity tests (new in 5.0)
set @`test`=1;
select @test, @`test`, @TEST, @`TEST`, @"teSt";
@ -780,6 +781,18 @@ show variables like 'hostname';
--echo End of 5.0 tests
#
# Bug#36446: Attempt to set @@join_buffer_size to its minimum value
# produces spurious warning
#
# set to 1 so mysqld will correct to minimum (+ warn)
set join_buffer_size=1;
# save minimum
set @save_join_buffer_size=@@join_buffer_size;
# set minimum
set join_buffer_size=@save_join_buffer_size;
# This is at the very after the versioned tests, since it involves doing
# cleanup
#
@ -816,6 +829,8 @@ 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;
#
# Bug#28580 Repeatation of status variables
#