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10 Newer Entries Showing entries 31 to 40 of 113 10 Older Entries

Displaying posts with tag: bugs (reset)

My MySQL bugs and feature requests
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My MySQL bugs is a list I recently created and intend to keep up to date with issues I have seen.

Fun with Bugs #13 - MySQL replication and two-way communication
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I hope you had noted this already, but in case you missed it, please, read this post by Matt Lord and check any bug at http://bugs.mysql.com. As soon as you log in to your Oracle account, you can vote for bugs and feature requests! I hope that eventually somebody will publish lists of "Top N Most Wanted" fixes based on number of users who clicked on this great "Affects Me" button.

If you plan to use this new feature to express your needs while given a chance, why …

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Fun with Bugs #12 - MySQL Cluster 7.3 GA
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I had always tried to avoid all kinds of clusters, from Oracle RAC to MySQL NDB Cluster and Percona XtraDB Cluster, as much as possible. But these days clusters become common and it seems new developments in this area can not be just ignored. So, I decided to devote this issue of "Fun with Bugs" to MySQL Cluster 7.3, that was released as GA this week and still is in the news.

The release was mostly about adding foreign keys support (one of the features that some users were missing for years comparing to InnoDB and other cluster database solutions). At the same time, MySQL …

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Fun with Bugs #10 - recently reported bugs affecting MySQL 5.6.12
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MySQL 5.6.12 is available to community for more than a week already, so people started to test and use it. And, no wonder, new bug reports started to appear. Let's concentrate on them in this issue.

I'd like to start with a funny one.  Bug #69413 had scared some of my Facebook readers to death, as we see kernel mutex mentioned clearly in the release notes for 5.6.12. What, kernel mutex comes back again? No, it's just a result of null merge and, probably, …

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Fun with Bugs #9 - MySQL 5.6.12, quick review
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So, it seems we have MySQL 5.6.12 released officially. We have great Changes in MySQL 5.6.12 page already widely shared and people already blogging about a feature implemented by my dear friend Sinisa.

Quick scroll over changes shows 130+ bugs fixed and it will surely take time to understand the impact of all these fixes. We have 2 months for this till next release, so eventually we'll find out what's good in …

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MySQL 5.6 Experiences - .mylogin.cnf and mysql_config_editor
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Having  basic ideas of how I am going to describe new features explained, I can proceed with some real (and I hope useful) content. As I read this page about new features from top to bottom, let's start with security improvements...

.mylogin.cnf and mysql_config_editor  Details:

  • you can store authentication credentials encrypted in an option file named .mylogin.cnf (in user's home …


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More details on "MySQL 5.6 Experiences" coming soon...
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I've already shared my presentation few hours before I made it during PLMCE 2013, back on April 24. The idea behind the presentation was simple (and I think that any MySQL user who is planning to upgrade to MySQL 5.6.x in production should do something like this): let's read the "What Is New in MySQL 5.6" manual page and check new features one by one.

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Fun with Bugs #8 - what's wrong with Oracle's way of handling public MySQL bugs database
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Many people seem unhappy with the way Oracle develops MySQL. I am not one of them. I think very few really important things are missing and in this post I'd like to concentrate on one of them: having internal and public bugs databases not in sync in too many cases.

Let me quote myself to explain where problem starts:

"Now the most important thing you should know about MySQL bugs processing the way it is done now in Oracle. When bug is "Verified" and(!) considered serious enough, it is copied to the …



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MySQL bug 69179 – INFORMATION_SCHEMA.PARTITIONS causes query plan changes
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Shard-Query examines INFORMATION_SCHEMA.PARTITIONS to determine if a table is partitioned.  When a table is partitioned, Shard-Query creates multiple background queries, each limited to a single partition.  Unfortunately, it seems that examining INFORMATION_SCHEMA.PARTITIONS causes query plans to change after the view is accessed.

I have reported bug 69179 to MySQL AB  Oracle Corporation(old habits die hard).

Be careful: If you have automated tools (like schema management GUI tools) then make sure they …

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Fun with bugs #7, still mostly about 5.6.11
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It looks like now Oracle will release new 5.6.x every 2 months, so while I'd happily write about bugs fixed in 5.6.12 we still have to wait for the official release to happen. I am too impatient to wait for 5.6.12, so let me write this post of a classical kind - just a summary of my MySQL bugs' related posts on Facebook since the previous one.

I have to start with replication-related bugs in 5.6.11 pointed out by …

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10 Newer Entries Showing entries 31 to 40 of 113 10 Older Entries

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