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10 Newer Entries Showing entries 91 to 100 of 892 10 Older Entries

Displaying posts with tag: Uncategorized (reset)

A chance for Cassandra Storage Engine
+2 Vote Up -1Vote Down

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 …
  [Read more...]
Luxbet, MariaDB and Melbourne Cup
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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, …

  [Read more...]
MySQL yum repositories
Employee_Team +14 Vote Up -0Vote Down

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 …

  [Read more...]
MySQL 5.6: no testcases for non-crashing bugs, either (and an incomplete bugfix)
+5 Vote Up -2Vote Down

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 …
  [Read more...]
Studying for the New MySQL 5.6 DBA Exam
Employee +1 Vote Up -0Vote Down

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, …

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EXPLAIN UPDATE/DELETE/INSERT in MySQL and MariaDB
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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  | …
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MEM 3.0: Getting started
Employee +1 Vote Up -0Vote Down

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 …

  [Read more...]
MEM 3.0: Getting started
Employee +0 Vote Up -0Vote Down

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 …

  [Read more...]
MySQL Tech Tour @Barcelona, 7th Nov.
Employee +0 Vote Up -0Vote Down

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


MySQL Tech Tour @Barcelona, 7th Nov.
Employee +0 Vote Up -0Vote Down

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


10 Newer Entries Showing entries 91 to 100 of 892 10 Older Entries

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