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Bug#31177: Server variables can't be set to their current values

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Default values of variables were not subject to upper/lower bounds
and step, while setting variables was. Bounds and step are also
applied to defaults now; defaults are corrected quietly, values
given by the user are corrected, and a correction-warning is thrown
as needed. Lastly, very large values could wrap around, starting
from 0 again. They are bounded at the maximum value for the
respective data-type now if no lower maximum is specified in the
variable's definition.
This commit is contained in:
tnurnberg@mysql.com/white.intern.koehntopp.de
2007-11-30 06:32:04 +01:00
parent 6b92ec4acb
commit 31d4e58ad4
21 changed files with 307 additions and 121 deletions
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2
mysql-test/t/variables.test
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@@ -126,7 +126,7 @@ set GLOBAL query_cache_size=100000;
set GLOBAL myisam_max_sort_file_size=2000000;
show global variables like 'myisam_max_sort_file_size';
set GLOBAL myisam_max_sort_file_size=default;
--replace_result 2147483647 FILE_SIZE 9223372036854775807 FILE_SIZE
--replace_result 2147482624 FILE_SIZE 2146435072 FILE_SIZE
show variables like 'myisam_max_sort_file_size';
set global net_retry_count=10, session net_retry_count=10;