Merge lp:~hrvojem/percona-server/bug1379211-5.6 into lp:percona-server/5.6

[Hrvoje Matijakovic]

[Laurynas Biveinis (laurynas-biveinis)]

review: Approve

=== modified file 'doc/source/index.rst'
--- doc/source/index.rst	2014-10-07 07:12:53 +0000
+++ doc/source/index.rst	2014-10-10 09:41:14 +0000
@@ -161,6 +161,7 @@
    tokudb/using_tokudb
    tokudb/tokudb_compression
    tokudb/tokudb_multiple_clustering_keys
+   tokudb/removing_tokudb
 
 Reference
 =========

=== added file 'doc/source/tokudb/removing_tokudb.rst'
--- doc/source/tokudb/removing_tokudb.rst	1970-01-01 00:00:00 +0000
+++ doc/source/tokudb/removing_tokudb.rst	2014-10-10 09:41:14 +0000
@@ -0,0 +1,54 @@
+.. _removing_tokudb:
+
+================================
+ Removing TokuDB storage engine
+================================
+
+In case you want remove the TokuDB storage engine from |Percona Server| without causing any errors following is the recommended procedure:
+
+Change the tables from TokuDB to InnoDB
+---------------------------------------
+
+If you still need the data in the TokuDB tables you'll need to alter the tables to other supported storage engine i.e., |InnoDB|:
+
+.. code-block:: mysql
+
+   mysql> ALTER TABLE City ENGINE=InnoDB;
+
+.. note:: 
+
+   In case you remove the TokuDB storage engine before you've changed your tables to other supported storage engine you won't be able to access that data without re-installing the TokuDB storage engine.
+
+Removing the plugins
+--------------------
+
+Storage engine requires manual removal: 
+
+.. code-block:: mysql
+
+ UNINSTALL PLUGIN tokudb; 
+ UNINSTALL PLUGIN tokudb_file_map;
+ UNINSTALL PLUGIN tokudb_fractal_tree_info;
+ UNINSTALL PLUGIN tokudb_fractal_tree_block_map;
+ UNINSTALL PLUGIN tokudb_trx;
+ UNINSTALL PLUGIN tokudb_locks;
+ UNINSTALL PLUGIN tokudb_lock_waits;
+
+After the engine and the plugins have been uninstalled you can remove the TokuDB package by using the apt/yum commands: 
+
+.. code-block:: bash
+
+ [root@centos ~]# yum remove Percona-Server-tokudb-56.x86_64
+
+or
+
+.. code-block:: bash
+
+ root@wheezy:~# apt-get remove percona-server-tokudb-5.6
+ 
+.. note::
+
+   Make sure you've removed all the TokuDB specific variables from your configuration file (:file:`my.cnf`) before you restart the server, otherwise server could show errors or warnings and won't be able to start.
+
+
+