Author: jstephens
Date: 2006-03-18 17:57:01 +0100 (Sat, 18 Mar 2006)
New Revision: 1631
Log:
Post-review additions for Cluster Disk Data. (Thanks, Jonas!)
Modified:
trunk/refman-5.1/information-schema.xml
trunk/refman-5.1/ndbcluster.xml
Modified: trunk/refman-5.1/information-schema.xml
===================================================================
--- trunk/refman-5.1/information-schema.xml 2006-03-18 15:38:59 UTC (rev 1630)
+++ trunk/refman-5.1/information-schema.xml 2006-03-18 16:57:01 UTC (rev 1631)
@@ -4362,6 +4362,13 @@
<literal>EXTENT_SIZE</literal> becomes, the less accurate the
approximations are.
</para>
+
+ <para>
+ It is also important to remember that once an extent is used, it
+ cannot be freed again without dropping the datafile of which it is a
+ part. This means that deletes from a Disk Data table do
+ <emphasis>not</emphasis> release disk space.
+ </para>
<para>
The extent size can be set in a <literal>CREATE
Modified: trunk/refman-5.1/ndbcluster.xml
===================================================================
--- trunk/refman-5.1/ndbcluster.xml 2006-03-18 15:38:59 UTC (rev 1630)
+++ trunk/refman-5.1/ndbcluster.xml 2006-03-18 16:57:01 UTC (rev 1631)
@@ -10245,6 +10245,13 @@
something you must keep in mind as you design Disk Data
tables.
</para>
+
+ <para>
+ <emphasis role="bold">Important</emphasis>: For Disk Data tables in
+ MySQL 5.1, variable-length columns take up a fixed amount of space.
+ For each row, this is equal to the space required to store the largest
+ possible value for that column.
+ </para>
</listitem>
</orderedlist>
@@ -10316,6 +10323,11 @@
<literal>INFORMATION_SCHEMA</literal> database. For more
information, see <xref linkend="files-table"/>.
</para>
+
+ <para>
+ For information on configuration parameters affecting Disk Data behaviour,
+ see <xref linkend="mysql-cluster-config-file"/>.
+ </para>
</section>
| Thread |
|---|
| • svn commit - mysqldoc@docsrva: r1631 - trunk/refman-5.1 | jon | 18 Mar |
