My article on how to make the real-time processing of information from traditional transactional stores into Hadoop a reality has been published over at TDWI:
Making Real-Time Analytics a Reality — TDWI -The Data Warehousing Institute.
Filed under: Articles Tagged: analytics, big data,
data migration, databases, hadoop,
mysql, …
In my recent post, “TokuDB gotchas: slow INFORMATION_SCHEMA TABLES,” I saw a couple questions and tweets asking if we use TokuDB in production. Actually I mentioned it in that post and we also blogged about it in a couple of other recent posts:
So, yes, we are using Percona Server + TokuDB as a main storage engine in Percona Cloud Tools to store timeseries data.
And, …
[Read more]TL;DR: Priority queue optimization for filesort with small LIMIT is now visible in MariaDB: there is a status variable and you can also see it in the slow query log (KB page link).
A longer variant:
One of the new optimizations in MySQL 5.6 is ability to use a
priority queue instead of sorting for ORDER BY … LIMIT queries.
The optimization was ported into MariaDB 10.0 long ago, but we
still get questions if/when it will be ported. I guess, the
reason for this is that, besides the query speed, you can’t see
this optimization. Neither EXPLAIN, nor EXPLAIN FORMAT=JSON or
PERFORMANCE_SCHEMA or status variables give any indication
whether filesort used priority queue or the regular
quicksort+merge algorithm.
MySQL 5.6 has only one way one can …
[Read more]I had the pleasure of presenting to the PHP Users Group Philippines a few days ago about mysqlnd_ms. The mysqlnd plugin, MySQL Master Slave, is a transparent layer on top of mysqlnd extension. This allows you to do read-write splitting and slave reads load balancing without needing to change anything from your application. But do you know you can also achieve a form of high availability with this plugin? I shared 2 forms on my presentation, using async MySQL replication either in master-slave configuration or master-master configuration, while the second form is having an all primary cluster where you can write to all nodes.
This first part is to demonstrate how you can achieve a simple HA solution using the first form. First, all the sample code here can be found on my GitHub repository. So, to use the mysqlnd_ms plugin, it uses …
[Read more]On Thursday 17th July I’ll be hosting a webinar which explains what MySQL Clusrter is, what it can deliver and what the latest developments are. As always the webinar is free but please register here.
Details:
Join this technical webinar to learn how MySQL Cluster 7.3, the latest GA release, enables developer agility by making it far simpler and faster to build your products and web-based applications with MySQL Cluster. You’ll also learn how MySQL Cluster and its linear scalability, 99.999% uptime, real-time responsiveness, and ability to perform over 1 BILLION Writes per Minute can help your products and applications meet the needs of the most demanding markets. MySQL Cluster combines these …
[Read more]
The binary and source versions of MySQL Cluster 7.3.6 have now
been made available at http://www.mysql.com/downloads/cluster/.
Release notes
MySQL Cluster NDB 7.3.6 is a new release of MySQL Cluster,
based
on MySQL Server 5.6 and including features from version 7.3 of
the
NDB storage engine, as well as fixing a number of recently
discovered bugs in previous MySQL Cluster releases.
Obtaining MySQL Cluster NDB 7.3. MySQL Cluster NDB 7.3
source
code and binaries can be obtained from
http://dev.mysql.com/downloads/cluster/.
For an overview of changes made in MySQL Cluster NDB 7.3,
see
MySQL Cluster Development in MySQL Cluster …
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Training helps you acquire product expertise. Certification proves this expertise to your future employers.
There are two MySQL Discount Packages: MySQL Database Administration and MySQL Developer.
For more information about the authentic MySQL curriculum, go to …
[Read more]This is the fourth post in our MySQL Fabric series. In case you’re joining us now, we started with an introductory post, and then discussed High Availability (HA) using MySQL Fabric here (Part 1) and here (Part 2). Today we will talk about how MySQL Fabric can help you scale out MySQL databases with sharding.
Introduction
At the time of writing, MySQL Fabric includes support for range- and hash-based sharding. As with HA, the functionality is split between client, through a MySQL Fabric-aware connector; and server, through the mysqlfabric utility and …
[Read more]Users seeking high availability, DR and zero downtime maintenance operation for business-critical MySQL applications face confusing choices. Is multi-master or master/slave clustering better? What about synchronous versus asynchronous replication? Using a plain vanilla, stock MySQL or a modified version of it? Which of these choices are right for data-driven businesses that depend on fast,
Percona is glad to announce the release of Percona Toolkit 2.2.9 on July 10, 2014 (downloads are available here and from the Percona Software Repositories). This release is the current GA (Generally Available) stable release in the 2.2 series.
Bugs Fixed:
