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BUG#12969301 : mysql_plugin: enable is ignored if plugin exists

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This patch changes the mechanism by which the client enables a 
plugin. Instead of using INSERT IGNORE to reload a plugin library,
it now uses REPLACE INTO. This allows users to load a library
multiple times replacing the existing values in the mysql.plugin
table. This allows users to replace the symbol reference to a
different dl name in the table. Thus permitting enabling of 
multiple versions of the same library without first disabling
the old version.

A regression test was added to ensure this feature works.
This commit is contained in:
unknown
2012-01-24 11:08:57 -05:00
parent 7615cb0890
commit 461e039a07
4 changed files with 104 additions and 6 deletions
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9
mysql-test/include/libdaemon_example.ini Normal file
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#
# Plugin configuration file. Place the following on a separate line:
#
# library binary file name (without .so or .dll)
# component_name
# [component_name] - additional components in plugin
#
liblibdaemon_example
daemon_example