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Bug#36540: CREATE EVENT and ALTER EVENT statements fail with large server_id

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The problem is that creating a event could fail if the value of
the variable server_id didn't fit in the originator column of
the event system table. The cause is two-fold: it was possible
to set server_id to a value outside the documented range (from
0 to 2^32-1) and the originator column of the event table didn't
have enough room for values in this range.

The log tables (general_log and slow_log) also don't have a proper
column type to store the server_id and having a large server_id
value could prevent queries from being logged.

The solution is to ensure that all system tables that store the
server_id value have a proper column type (int unsigned) and that
the variable can't be set to a value that is not within the range.
This commit is contained in:
Davi Arnaut
2009-03-11 17:30:56 -03:00
parent cd7d25f4b9
commit c5bb49d020
11 changed files with 107 additions and 21 deletions
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4
mysql-test/suite/sys_vars/r/server_id_basic_64.result
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@@ -60,9 +60,11 @@ SELECT @@global.server_id;
@@global.server_id
0
SET @@global.server_id = 2147483649*2;
Warnings:
Warning 1292 Truncated incorrect server-id value: '4294967298'
SELECT @@global.server_id;
@@global.server_id
4294967298
4294967295
SET @@global.server_id = 65530.34.;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '.' at line 1
SET @@global.server_id = '125';