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Staale Smedseng e5ae4e2392 A fix for Bug#22891 "session level max_allowed_packet can be 
set but is ignored".
                                  
This patch makes @@session.max_allowed_packed and
@@session.net_buffer_length read-only as suggested in the bug
report. The user will have to use SET GLOBAL (and reconnect)
to alter the session values of these variables.
                            
The error string ER_VARIABLE_IS_READONLY is introduced.
                            
Tests are modified accordingly.


sql/set_var.cc:
  The class sys_var_thd_ulong_session_readonly is introduced as
  a specialization of sys_var_thd_ulong implementing a read-only
  session variable. The class overrides check() and
  check_default() to achieve the read-only property for the
  session part of the variable.
sql/set_var.h:
  The class sys_var_thd_ulong_session_readonly is introduced as
  a specialization of sys_var_thd_ulong implementing a read-only
  session variable. The class overrides check() and
  check_default() to achieve the read-only property for the
  session part of the variable.
sql/share/errmsg.txt:
  New error ER_VARIABLE_IS_READONLY.
2008-11-20 08:51:48 +01:00
..
charsets merged 5.0-bugteam to 5.1-bugteam 2008-05-28 17:18:24 +03:00
.cvsignore
errmsg.txt A fix for Bug#22891 "session level max_allowed_packet can be 2008-11-20 08:51:48 +01:00
Makefile.am Many files: 2006-12-23 20:17:15 +01:00