If a table is partitioned then that makes it easy to maintain. Table has grown so huge and the backups are just keep running long then probably you need to think of archival or purge.

Purge the data if you don't want data from old partitions just by doing truncate or drop of those partitions which completes momentarily without locking the table for a long time

Archival can be done couple of ways.
We can take mysqldump (preferably from a slave) with a where condition to filter out the data you don't want to copy. And then import the dump file to archive database. check this link out for mysqldump with where clause .. and once data is copied, …

So you want to contribute to OpenStack? I can help!

For the last year or so I have been involved with OpenStack and more specifically the Trove (DBaaS) project as sort of an ambassador for Percona, contributing bits of knowledge, help and debugging wherever I could and thought I would share some of my experience with others that wanted to get involved with OpenStack development, documentation, testing, etc. Getting started with OpenStack contributions is also the idea behind my talk next month at Percona OpenStack Live 2015. (Percona Live attendees have access to OpenStack Live)

Back at the last OpenStack Conference and Design Summit in Paris last November, I had the amazing opportunity to attend the two-day …

In addition to our general CJK support, as detailed in this blog post, we’ve also added a MeCab parser. MeCab is a Japanese morphological analyzer, and we now have a full-text plugin parser based on it!

How Would I Use It?

1. Set the mecab_rc_file option — mecab_rc_file is a read-only system variable pertaining to the MeCab parser. The mecabrc file that it points to is a configuration file required by MeCab, …

When reading a MySQL Query Execution Plan (QEP) produced by the EXPLAIN command, generally one of the first observations is to validate an index is being used per table (i.e. per row of output). In MySQL, this is observed with the key column.

In the following two simple single table examples we see the use of the PRIMARY key. To the untrained eye this may lead to assume that the right index is being used.

Example 1

+----+-------------+----------------+-------+---------------+---------+---------+------+------+-------------+
| id | select_type | table          | type  | possible_keys | key     | key_len | ref  | rows | Extra       |
+----+-------------+----------------+-------+---------------+---------+---------+------+------+-------------+
|  1 | SIMPLE      | txxxxxxxxxxxx  | index | NULL          | PRIMARY | 4       | NULL |  100 | Using …

MySQL QA Episode #1: Bash/GNU Tools & Linux Upskill & Scripting Fun

This episode consists of 13 parts, and an introduction. See videos below

In HD quality (set your player to 720p!)

Introduction

Part 1: echo, ls, cp, rm, vi, cat, df, du, tee, cd, clear, uname, date, time, cat, mkdir

Part 2: find, wc, sort, shuf, tr, mkdir, man, more

Part 3: Redirection, tee, stdout, stderr, /dev/null, cat

Part 4: Vars, ‘ vs “, $0, $$, $!, screen, chmod, chown, export, set, whoami, sleep, kill, sh, grep, sudo, su, pwd

Part 5: grep, regex (regular expressions), tr

Part 6: sed, regex (regular expressions)

Part 7: awk

Part 8: xargs

Part 9: subshells, shells, …

MariaDB CONNECT Storage Engine allows to access a JSON file as if it was a local table. The mapping between a hierarchical structure and a relational structure is not ‘natural’ and needs to be defined. To achieve that we need a specific syntax. We associate with each column a ‘field_format’ attribute. This ‘field_format’ column attribute [...]

Welcome to the MySQL QA Training Series!

If you have not read our introductory blog post on pquery yet, I’d recommend reading that one first to get a bit of background. The community is enthuastic about pquery, and today I am happy to announce a full training series on pquery and more. Whether you are a Linux or MySQL newbie or a seasoned QA engineer, there is something here for you. From Bash scripting (see episode 1 below), to every aspect of the new pquery framework, it is my hope that you enjoy this series. If you do, please leave us a comment

Database quality assurance is not as straightforward as it may seem. It’s not a matter of point-and-click, but rather of many intertwined tools and scripts. Beyond that, due to the complexity of the underlying product, it’s about having an overall plan or …

The default InnoDB full-text parser is ideal for latin based languages where whitespace is the token or word separator, but for languages like Chinese, Japanese, and Korean (CJK)—where there is no fixed separators for individual words, and each word can be compromised of multiple characters—we need a different way to handle the word tokens. I’m now very happy to say that in MySQL 5.7.6 we’ve made use of the new pluggable full-text parser support in order to provide you with an n-gram parser that can be used with CJK!

…

In a few weeks, I’ll be speaking at MySQL Conference & Expo about the new major feature in MySQL 5.6, Global Transaction ID (GTID). I’ll explain what is GTID and how to implement a GTID Replication and troubleshoot most of the common issues that might be faced in GTID Replication.
Also, I’ll talk in brief about how to perform the migration from Classic to GTID replication in MySQL 5.6 and the online migration in MySQL 5.7 as well.
My talk is titled “GTID REPLICATION – IMPLEMENTATION AND TROUBLESHOOTING“, more information about my talk can be checked out here.
The conference will be held in …

Because interactivity with the trainer (our classes are not dry lectures) and discussions are an important and intrinsic part of our teaching approach, we’ve long tracked development of technologies for online training, but previously were not satisfied.

High costs of various corporate offerings would negatively impact our pricing, given the relatively small scale use and our purposely small classes. The student system requirements would often be problematic – obviously students use different operating systems (Windows, Mac, Linux) and we cannot prescribe that people use a particular OS.

Big Blue Button has long looked like it had the right potential, and it’s now developed to a point where were happy with it. For more tech and practical details, see our Interactive Online Training page.

After our successful trial runs, we have the following …