List:Commits« Previous MessageNext Message »
From:jon.stephens Date:March 19 2010 10:44am
Subject:svn commit - mysqldoc@docsrva: r19597 - trunk/dynamic-docs/changelog
View as plain text  
Author: jstephens
Date: 2010-03-19 11:44:40 +0100 (Fri, 19 Mar 2010)
New Revision: 19597

Log:

Revised BUG#48846 changelog entry (Thanks, James!)



Modified:
   trunk/dynamic-docs/changelog/mysqld-2.xml


Modified: trunk/dynamic-docs/changelog/mysqld-2.xml
===================================================================
--- trunk/dynamic-docs/changelog/mysqld-2.xml	2010-03-18 20:31:17 UTC (rev 19596)
+++ trunk/dynamic-docs/changelog/mysqld-2.xml	2010-03-19 10:44:40 UTC (rev 19597)
Changed blocks: 3, Lines Added: 10, Lines Deleted: 3; 1702 bytes

@@ -30,7 +30,7 @@
       <para>
         When performing a complex mix of node restarts and system
         restarts, the node that was elected as master sometimes required
-        optimized node-recovery due to missing <literal>REDO</literal>
+        optimized node recovery due to missing <literal>REDO</literal>
         information. When this happened, the node crashed with
         <errortext>Failure to recreate object ... during restart, error
         721</errortext> (because the <literal>DBDICT</literal> restart

@@ -3501,7 +3501,9 @@
 
     <tags>
       <highlight type="partitioning"/>
+      <highlight type="performance"/>
       <manual type="optimization"/>
+      <manual type="records_in_range"/>
       <manual type="pruning"/>
     </tags>
 

@@ -3521,8 +3523,13 @@
 
       <para>
         When used on partitioned tables, the
-        <literal>records_in_range</literal> handler call checked all
-        partitions, rather than the unpruned partitions only.
+        <literal>records_in_range</literal> handler call checked more
+        partitions than necessary. The fix for this issue reduces the
+        number of unpruned partitions checked for statistics in
+        partition range checking, which has resulted in some partition
+        operations being performed up to 2-10 times faster than before
+        this change was made, when testing with tables having 1024
+        partitions.
       </para>
 
     </message>


Thread
svn commit - mysqldoc@docsrva: r19597 - trunk/dynamic-docs/changelogjon.stephens19 Mar