Comments for Eric Bergen http://ebergen.net/wordpress You will probably want some waders, a pickaxe, and one of those hats with a light on it before you go in here. Fri, 11 May 2012 07:02:34 +0000 hourly 1 http://wordpress.org/?v=3.3.2 Comment on MySQL 5.0 can deadlock when flush logs, show processlist, and a slave connection happen at the same time by Log Buffer #271, A Carnival of the Vanities for DBAs | The Pythian Blog http://ebergen.net/wordpress/2012/05/08/mysql-5-0-can-deadlock-when-flush-logs-show-processlist-and-a-slave-connection-happen-at-the-same-time/comment-page-1/#comment-403218 Log Buffer #271, A Carnival of the Vanities for DBAs | The Pythian Blog Fri, 11 May 2012 07:02:34 +0000 http://ebergen.net/wordpress/?p=545#comment-403218 [...] MySQL 5.0 can deadlock when flush logs, show processlist, and a slave connection happen at the same time according to Eric Bergen. [...] [...] MySQL 5.0 can deadlock when flush logs, show processlist, and a slave connection happen at the same time according to Eric Bergen. [...]

]]> Comment on Percona Live MySQL Conference by Ronald Bradford http://ebergen.net/wordpress/2012/05/08/percona-live-mysql-conference/comment-page-1/#comment-403123 Ronald Bradford Thu, 10 May 2012 19:50:56 +0000 http://ebergen.net/wordpress/?p=568#comment-403123 +1 (and yes I know where a clean secret bathroom is) +1 (and yes I know where a clean secret bathroom is)

]]> Comment on MySQL 5.0 can deadlock when flush logs, show processlist, and a slave connection happen at the same time by James Day http://ebergen.net/wordpress/2012/05/08/mysql-5-0-can-deadlock-when-flush-logs-show-processlist-and-a-slave-connection-happen-at-the-same-time/comment-page-1/#comment-402910 James Day Wed, 09 May 2012 18:43:17 +0000 http://ebergen.net/wordpress/?p=545#comment-402910 Eric, there's been at least one fixed bug with a hang caused by log rotation. ... was going to just be on vacation and mention my memory and say no more than that but I decided to do a quick check on bugs.mysql.com and came up with this one: http://bugs.mysql.com/bug.php?id=56299 . There may well be more. I looked for MYSQL_LOG::rotate_and_purge in my bugs search, you might also try some of the close calls on the stack to see what they turn up. If you don't find a definite match please do create a bug report and mention any close bug reports that you rejected as possible matches if you're feeling kind, it'll save some time for the person who has to check and reproduce it. But report anyway, that's optional. If it's in 5.0 and 5.5 best to mention that you can reproduce with both. A fix in 5.5 is likely to be quite fast, one for 5.0 may never arrive because of its age. Thanks for the clear description, a nice job. Views are my own, for an official Oracle opinion consult a PR person. James Day, MySQL Senior Principal Support Engineer, Oracle Eric, there’s been at least one fixed bug with a hang caused by log rotation. … was going to just be on vacation and mention my memory and say no more than that but I decided to do a quick check on bugs.mysql.com and came up with this one: http://bugs.mysql.com/bug.php?id=56299 . There may well be more. I looked for MYSQL_LOG::rotate_and_purge in my bugs search, you might also try some of the close calls on the stack to see what they turn up.

If you don’t find a definite match please do create a bug report and mention any close bug reports that you rejected as possible matches if you’re feeling kind, it’ll save some time for the person who has to check and reproduce it. But report anyway, that’s optional. If it’s in 5.0 and 5.5 best to mention that you can reproduce with both. A fix in 5.5 is likely to be quite fast, one for 5.0 may never arrive because of its age.

Thanks for the clear description, a nice job.

Views are my own, for an official Oracle opinion consult a PR person.

James Day, MySQL Senior Principal Support Engineer, Oracle

]]> Comment on Percona Live MySQL Conference by Jay Janssen http://ebergen.net/wordpress/2012/05/08/percona-live-mysql-conference/comment-page-1/#comment-402857 Jay Janssen Wed, 09 May 2012 13:22:47 +0000 http://ebergen.net/wordpress/?p=568#comment-402857 LOL about the secret bathroom, I have one too. I was shocked to find bathrooms on either side of the Expo hall doors. Only 4 years at the conference and this was the first time I noticed them. LOL about the secret bathroom, I have one too.

I was shocked to find bathrooms on either side of the Expo hall doors. Only 4 years at the conference and this was the first time I noticed them.

]]> Comment on MySQL 5.0 can deadlock when flush logs, show processlist, and a slave connection happen at the same time by sbester http://ebergen.net/wordpress/2012/05/08/mysql-5-0-can-deadlock-when-flush-logs-show-processlist-and-a-slave-connection-happen-at-the-same-time/comment-page-1/#comment-402826 sbester Wed, 09 May 2012 09:02:35 +0000 http://ebergen.net/wordpress/?p=545#comment-402826 http://bugs.mysql.com/bug.php?id=56299 (mutex deadlock with COM_BINLOG_DUMP, binlog purge, and processlist/kill) http://bugs.mysql.com/bug.php?id=56299
(mutex deadlock with COM_BINLOG_DUMP, binlog purge, and processlist/kill)

]]> Comment on MySQL 5.0 can deadlock when flush logs, show processlist, and a slave connection happen at the same time by JoKoT3 http://ebergen.net/wordpress/2012/05/08/mysql-5-0-can-deadlock-when-flush-logs-show-processlist-and-a-slave-connection-happen-at-the-same-time/comment-page-1/#comment-402822 JoKoT3 Wed, 09 May 2012 08:41:34 +0000 http://ebergen.net/wordpress/?p=545#comment-402822 I opened a bug (#13400021) at oracle for a something similar in MySQL Cluster. This has been corrected in version 7.1.18 (see http://dev.mysql.com/doc/refman/5.1/en/mysql-cluster-news-5-1-56-ndb-7-1-18.html). I opened a bug (#13400021) at oracle for a something similar in MySQL Cluster. This has been corrected in version 7.1.18 (see http://dev.mysql.com/doc/refman/5.1/en/mysql-cluster-news-5-1-56-ndb-7-1-18.html).

]]> Comment on DRBD in the real world. by Yosef Coelho http://ebergen.net/wordpress/2007/04/02/drbd-in-the-real-world/comment-page-1/#comment-389232 Yosef Coelho Thu, 08 Mar 2012 10:45:25 +0000 http://ebergen.net/wordpress/2007/04/02/drbd-in-the-real-world/#comment-389232 I strongly disagree with that "Schema changes are a normal part of life with mysql". NO, that's normal part of life of a not organized development. Schema changes MUST be part of an organized and structured "new version" which has been extensively tested on a replica server etc etc. You run the schema change on the hot one on a planned time with all the team ready and with scape solutions at the lowest demand time. I've worked with a lot of crazy "developers" who promote "constant schema changes" as a "normal" practice. This is just plain lack of organization and project management, QA etc etc etc... On the fly = low level work. I strongly disagree with that “Schema changes are a normal part of life with mysql”. NO, that’s normal part of life of a not organized development.

Schema changes MUST be part of an organized and structured “new version” which has been extensively tested on a replica server etc etc. You run the schema change on the hot one on a planned time with all the team ready and with scape solutions at the lowest demand time.

I’ve worked with a lot of crazy “developers” who promote “constant schema changes” as a “normal” practice. This is just plain lack of organization and project management, QA etc etc etc… On the fly = low level work.

]]> Comment on Changing caps lock to control with .Xmodmap by jmeter http://ebergen.net/wordpress/2011/12/28/changing-caps-lock-to-control-with-xmodmap/comment-page-1/#comment-387222 jmeter Tue, 28 Feb 2012 10:34:14 +0000 http://ebergen.net/wordpress/?p=538#comment-387222 I started using a new ergonomic keyboard that has changed my life, no remapping needed. I started using a new ergonomic keyboard that has changed my life, no remapping needed.

]]> Comment on How to be a MySQL DBA and the best MySQL book on the planet. by High Performance MySQL Third Edition pre-order available at Xaprb http://ebergen.net/wordpress/2010/07/20/how-to-be-a-mysql-dba-and-the-best-mysql-book-on-the-planet/comment-page-1/#comment-378937 High Performance MySQL Third Edition pre-order available at Xaprb Fri, 13 Jan 2012 16:39:29 +0000 http://ebergen.net/wordpress/?p=400#comment-378937 [...] Bergen called the second edition “the best MySQL book on the planet“. What will the third edition be called? The best in the solar system? This reminds me of a [...] [...] Bergen called the second edition “the best MySQL book on the planet“. What will the third edition be called? The best in the solar system? This reminds me of a [...]

]]> Comment on Keyboard of Champions. by Eric Bergen » Blog Archive » Changing caps lock to control with .Xmodmap http://ebergen.net/wordpress/2005/01/15/keyboard-of-champions/comment-page-1/#comment-376040 Eric Bergen » Blog Archive » Changing caps lock to control with .Xmodmap Thu, 29 Dec 2011 18:25:05 +0000 /?p=8#comment-376040 [...] 2011-12-29 I still use my HHK at work but switched back to a regular style keyboard at home.] Category: Geek, QFTPWE [...] [...] 2011-12-29 I still use my HHK at work but switched back to a regular style keyboard at home.] Category: Geek, QFTPWE [...]

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