Short version: It looks like DataStax has released an official C++ driver for their new CQL native protocol. This makes it possible to update MariaDB’s Cassandra Storage Engine to work with all column families in Cassandra 1.2 and up.

Long version: In case the above didn’t make any sense to you, here’s some background:

• Cassandra Storage Engine was developed against Cassandra 1.1
• Cassandra 1.1 had a client-server protocol based on Thrift API. It had a number of limitations, the most important was lack of support for streaming. These translated into limitations in Cassandra storage engine, for example, I could not support secondary indexes.
• Cassandra 1.2 was released in February, and it had a …

Yesterday was Melbourne Cup day in Australia – the biggest annual horse race event in the country, and in the state of Victoria it’s even a public holiday.

Open Query does work for Luxbet (part of Tabcorp), and Melbourne Cup day is by far their biggest day of the year in terms of traffic. It’s not just a big spike, there’s orders of magnitude difference so you can really say that the rest of the year is downright quiet (in relative terms). So, a very interesting load pattern.

Since last year Luxbet has upgraded from stock MySQL to MariaDB, and with our input made some other infrastructure modifications including moving to a pure solid state storage (FusionIO) solution as a SAN just won’t deliver the resilience and performance required. This may seem odd, but remember that a) …

I think most people will agree that downloading RPMs from a website is kind of old fashioned when there are yum repos. After a number of user requests, we have now launched the official yum repos for MySQL.

Can’t wait? Neither can I. On a fresh install:

1. Download a setup package for your distribution from http://dev.mysql.com/downloads/repo
   
2. yum localinstall mysql-community-release-distro-release.noarch.rpm
3. yum update
4. yum install mysql-community-server

This works for fresh installs. If you’re upgrading from an older version, read about upgrading first.

…

I normally don’t write such posts, but this time I’ll do a little whining. I was looking at MySQL’s Bug#69581, which was also filed against MariaDB as MDEV-5102. With some effort (little for this particular bug), one can find out that Bug#69581’s counterpart in Oracle’s internal bug database is Bug#16862316, and the fix is in revision 5366 in MySQL 5.6.14.

There are two problems, though:

• The fix doesn’t include a testcase. We know, Oracle doesn’t publish testcases for crashing bugs, with a justification that it’s for security reasons. However, this bug is not a …

Parallel Universe is now available as part of Linux OS images at Amazon AWS Marketplace in addition to Community AMIs.
Amazon Web Services is a scalable cloud service provider at http://aws.amazon.com available in

US East (Virginia)
US West (Oregon)
US West (Northern California)
EU West (Ireland)
Asia Pacific (Singapore)
Asia Pacific (Sydney)
Asia Pacific (Tokyo)
South America (Sao Paulo)

Launch Instance -> AWS Marketplace or Community AMIs -> search “parallel universe”

Host OS:
Amazon Linux
Red Hat Enterprise Linux
SUSE Linux Enterprise Server
Ubuntu Server
Cluster Compute Amazon Linux
Cluster GPU Amazon Linux
Cluster Instances SUSE Linux Enterprise Server
Cluster Instances Ubuntu Server

I have have been receiving a lot of questions about the new MySQL 5.6 DBA exam. Sadly I can not answer a lot of the questions until after my exam in early November. However I do know some good things about the new exams.

First — No True or False questions. Oracle has set the standards on that policy and I had to update the ol’ 5.0 exams to make certain there the T/F questions were removed. Why is this important? Don’t you have a fifty/fifty chance on T/F questions? The trouble is that some of these questions were a wee bit tricky and needed parsing plus a full understanding of the subject to get them right. For fairness, it is easy to do without the T/F questions.

Second — No more pick up to N answers. Once again, for fairness.

Third — One exam for the certification. In the past the costs, not just financial, of setting up the second exam and studying for it turned off many candidates.

MySQL 5.6 added support for EXPLAIN INSERT/UPDATE/DELETE. MySQL 5.7 made some improvements to EXPLAIN code. Also, 5.7 added support for EXPLAIN FOR CONNECTION, which looks very similar to MariaDB’s SHOW EXPLAIN. I was working on putting EXPLAIN INSERT/UPDATE/DELETE into MariaDB 10.0, so I’ve dug up some details and thought I’d share them:

EXPLAIN UPDATE/DELETE

EXPLAIN UPDATE looks like regular EXPLAIN SELECT:

MySQL [dbt3sf1]> explain update orders set o_orderpriority='1-URGENT' where o_orderDATE='1998-07-21';
+----+-------------+--------+-------+---------------+---------------+---------+-------+------+-------------+
| id | select_type | table  | type  | possible_keys | key           | key_len | ref   | rows | Extra       |
+----+-------------+--------+-------+---------------+---------------+---------+-------+------+-------------+
|  1 | SIMPLE      | orders | range | i_o_orderdate | i_o_orderdate | 4       | const |  628 | Using …

Time to install MEM 3.0, and get its built-in agent working.

[ If you want some tips on What's New, have a look here. ]

I’ve downloaded the Monitor Server and the agent zipped s/w for Linux & Win from http://edelivery.oracle.com:

mysqlmonitor-3.0.0.2887-linux-x86-installer.bin
mysqlmonitoragent-3.0.0.2887-linux-glibc2.3-x86-32bit-installer.bin
mysqlmonitoragent-3.0.0.2887-windows-installer.exe

The Monitor install

So, on my Oracle Linux machine:

./mysqlmonitor-3.0.0.2887-linux-x86-installer.bin

It all installs fine. No issues, if you’re used to MEM 2.3.

Double check your configuration_report.txt :

MySQL Enterprise Monitor (Version 3.0.0.2887 : 3.0.0.2887)

Here are the settings you …

Time to install MEM 3.0, and get its built-in agent working.

[ If you want some tips on What's New, have a look here. ]

I’ve downloaded the Monitor Server and the agent zipped s/w for Linux & Win from http://edelivery.oracle.com:

mysqlmonitor-3.0.0.2887-linux-x86-installer.bin
mysqlmonitoragent-3.0.0.2887-linux-glibc2.3-x86-32bit-installer.bin
mysqlmonitoragent-3.0.0.2887-windows-installer.exe

The Monitor install

So, on my Oracle Linux machine:

./mysqlmonitor-3.0.0.2887-linux-x86-installer.bin

It all installs fine. No issues, if you’re used to MEM 2.3.

Double check your configuration_report.txt :

MySQL Enterprise Monitor (Version 3.0.0.2887 : 3.0.0.2887)

Here are the settings you …

We’re on the move again. Come and join us on the 7th of November at the Oracle office in Barcelona. Find out more details about what was announced at MySQL Connect, as well as what’s next…

For more information about this event please visit the link below:

http://www.oracle.com/us/dm/29173-emeafm13045970mpp010-oem-2020763-es.html