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	<title>Comments on: How to check MySQL replication integrity continually</title>
	<atom:link href="http://www.xaprb.com/blog/2008/10/04/how-to-check-mysql-replication-integrity-continually/feed/" rel="self" type="application/rss+xml" />
	<link>http://www.xaprb.com/blog/2008/10/04/how-to-check-mysql-replication-integrity-continually/</link>
	<description>Stay curious!</description>
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		<title>By: Xaprb</title>
		<link>http://www.xaprb.com/blog/2008/10/04/how-to-check-mysql-replication-integrity-continually/#comment-16631</link>
		<dc:creator>Xaprb</dc:creator>
		<pubDate>Thu, 02 Jul 2009 15:21:58 +0000</pubDate>
		<guid isPermaLink="false">http://www.xaprb.com/blog/?p=139#comment-16631</guid>
		<description>Sheeri, the checksum_args only specifies arguments to apply to specific tables.  It&#039;s basically an override table.  It doesn&#039;t specify that only the given tables will be checksummed.  We&#039;ll update the docs to clarify this.  I think (but I lost track) that you also mentioned the lack of quoting with chunk-size on an issue you entered?</description>
		<content:encoded><![CDATA[<p>Sheeri, the checksum_args only specifies arguments to apply to specific tables.  It&#8217;s basically an override table.  It doesn&#8217;t specify that only the given tables will be checksummed.  We&#8217;ll update the docs to clarify this.  I think (but I lost track) that you also mentioned the lack of quoting with chunk-size on an issue you entered?</p>
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		<title>By: Sheeri K. Cabral</title>
		<link>http://www.xaprb.com/blog/2008/10/04/how-to-check-mysql-replication-integrity-continually/#comment-16572</link>
		<dc:creator>Sheeri K. Cabral</dc:creator>
		<pubDate>Fri, 19 Jun 2009 22:44:51 +0000</pubDate>
		<guid isPermaLink="false">http://www.xaprb.com/blog/?p=139#comment-16572</guid>
		<description>Baron, feel free to delete this comment if you like, when the post is updated.

These notes are for revision 3710

--chunksize is not a valid option, but --chunk-size is valid
-C does not work as an option to mk-table-checksum

&quot;chunksize&quot; and &quot;C&quot; and &quot;chunk_size&quot; are not allowable arg-table columns.

`chunk-size` is an allowable arg-table column, but it does not seem to function properly; probably because MySQL will interpret it as &quot;chunk&quot;-&quot;size&quot; unless enclosed by backtics.


Also, I made a checksum_args table, and did not put all the tables in the database there:

CREATE TABLE `checksum_args` (
  `db` char(64) NOT NULL,
  `tbl` char(64) NOT NULL,
  `ts` datetime default NULL,
  `since` varchar(35) default NULL
) ENGINE=MyISAM DEFAULT CHARSET=utf8;

mysql&gt; insert into checksum_args (db,tbl) SELECT TABLE_SCHEMA,TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE
_SCHEMA=&#039;phpwiki&#039; and TABLE_TYPE=&#039;BASE TABLE&#039;;
Query OK, 10 rows affected (0.01 sec)
Records: 10  Duplicates: 0  Warnings: 0

But when I ran the checksum, it was going through all the tables in all the databases.</description>
		<content:encoded><![CDATA[<p>Baron, feel free to delete this comment if you like, when the post is updated.</p>
<p>These notes are for revision 3710</p>
<p>&#8211;chunksize is not a valid option, but &#8211;chunk-size is valid<br />
-C does not work as an option to mk-table-checksum</p>
<p>&#8220;chunksize&#8221; and &#8220;C&#8221; and &#8220;chunk_size&#8221; are not allowable arg-table columns.</p>
<p>`chunk-size` is an allowable arg-table column, but it does not seem to function properly; probably because MySQL will interpret it as &#8220;chunk&#8221;-&#8221;size&#8221; unless enclosed by backtics.</p>
<p>Also, I made a checksum_args table, and did not put all the tables in the database there:</p>
<p>CREATE TABLE `checksum_args` (<br />
  `db` char(64) NOT NULL,<br />
  `tbl` char(64) NOT NULL,<br />
  `ts` datetime default NULL,<br />
  `since` varchar(35) default NULL<br />
) ENGINE=MyISAM DEFAULT CHARSET=utf8;</p>
<p>mysql&gt; insert into checksum_args (db,tbl) SELECT TABLE_SCHEMA,TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE<br />
_SCHEMA=&#8217;phpwiki&#8217; and TABLE_TYPE=&#8217;BASE TABLE&#8217;;<br />
Query OK, 10 rows affected (0.01 sec)<br />
Records: 10  Duplicates: 0  Warnings: 0</p>
<p>But when I ran the checksum, it was going through all the tables in all the databases.</p>
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	<item>
		<title>By: Maatkit version 2442 released at Xaprb</title>
		<link>http://www.xaprb.com/blog/2008/10/04/how-to-check-mysql-replication-integrity-continually/#comment-15256</link>
		<dc:creator>Maatkit version 2442 released at Xaprb</dc:creator>
		<pubDate>Sat, 18 Oct 2008 21:50:32 +0000</pubDate>
		<guid isPermaLink="false">http://www.xaprb.com/blog/?p=139#comment-15256</guid>
		<description>[...] newest release of Maatkit contains mk-audit bug fixes, lots of new features for mk-table-checksum so you can check replication more frequently (see my earlier post..., and more bug fixes for other [...]</description>
		<content:encoded><![CDATA[<p>[...] newest release of Maatkit contains mk-audit bug fixes, lots of new features for mk-table-checksum so you can check replication more frequently (see my earlier post&#8230;, and more bug fixes for other [...]</p>
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	<item>
		<title>By: Xaprb</title>
		<link>http://www.xaprb.com/blog/2008/10/04/how-to-check-mysql-replication-integrity-continually/#comment-15185</link>
		<dc:creator>Xaprb</dc:creator>
		<pubDate>Thu, 09 Oct 2008 20:47:52 +0000</pubDate>
		<guid isPermaLink="false">http://www.xaprb.com/blog/?p=139#comment-15185</guid>
		<description>Thanks!</description>
		<content:encoded><![CDATA[<p>Thanks!</p>
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	<item>
		<title>By: CaptTofu</title>
		<link>http://www.xaprb.com/blog/2008/10/04/how-to-check-mysql-replication-integrity-continually/#comment-15184</link>
		<dc:creator>CaptTofu</dc:creator>
		<pubDate>Thu, 09 Oct 2008 20:31:08 +0000</pubDate>
		<guid isPermaLink="false">http://www.xaprb.com/blog/?p=139#comment-15184</guid>
		<description>I really love this, and the high performance website! I wish that 5 years ago, when I started at MySQL that I had a time machine portal into these sites to get up to speed with internal dev ... oh, the bugs I could&#039;ve fixed and how fast I could&#039;ve come up to speed. Also, a time machine to fetch the book you guys wrote...</description>
		<content:encoded><![CDATA[<p>I really love this, and the high performance website! I wish that 5 years ago, when I started at MySQL that I had a time machine portal into these sites to get up to speed with internal dev &#8230; oh, the bugs I could&#8217;ve fixed and how fast I could&#8217;ve come up to speed. Also, a time machine to fetch the book you guys wrote&#8230;</p>
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