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How to Restore a Single InnoDB Table from a Full Backup After Accidentally Dropping It

 | March 15, 2017 |  Posted In: InnoDB, Insight for DBAs, Percona XtraBackup, Quality Assurance

InnoDB

In this blog post, we’ll look at how to restore a single InnoDB table from a full backup after dropping the table. You can also see an earlier blog post about restoring a single table from a full backup here: How to recover a single InnoDB table from a full backup. The idea behind the actions […]

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Improving TokuDB Hot Backup Usage with the autotokubackup Command Line Tool

 | March 6, 2017 |  Posted In: Percona Server, Quality Assurance, TokuDB

autotokubackup

In this blog post, we’ll look at how the command line tool autotokubackup can make TokuDB hot backups easier. I would like to share an experimental tool named autotokubackup, for TokuBackup. This tool is aimed at helping simplify the life of TokuDB system administrators. autotokubackup is written in the Python language. General information: If you need more information […]

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MySQL 8.0.1: The Next Development Milestone

 | January 9, 2017 |  Posted In: Insight for DBAs, MySQL, MySQL 8.0, Quality Assurance

MySQL 8.0.1

This post discusses the next MySQL development milestone: MySQL 8.0.1. From the outset, MySQL 8.0 has received plenty of attention. Both this blog (see the MySQL 8.0 search) and other sites around the Internet have covered it. Early reviews seem positive (including my own MySQL 8.0 early bugs review). There is plenty of excitement about the new features. As […]

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Thoughts About Column Compression, with Optional Predefined Dictionary

 | November 10, 2016 |  Posted In: InnoDB, Quality Assurance

column compression

This blog discusses column compression with an optional predefined dictionary. Compression, more compression with different algorithms, compress again, compress multiple times! 🙂 Compression is a hot topic in our lives. In general, testing new things is great if the processes are well-described and easy to follow. Let’s try to think like a QA engineer: the first […]

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MySQL Quality Assurance: A Vision for the Future by Roel Van de Paar (Final Episode 13)

 | August 13, 2015 |  Posted In: Insight for DBAs, Insight for Developers, MySQL, Quality Assurance

MySQL Quality Assurance

Welcome to the final – but most important – episode in the MySQL QA Series. In it, I present my vision for all MySQL Quality Assurance – for all distributions – worldwide. Episode 13: A Better Approach to all MySQL Regression, Stress & Feature Testing: Random Coverage Testing & SQL Interleaving 1. pquery Review 2. Random […]

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MySQL QA Episode 12: My server is crashing… Now what? For customers or users experiencing a crash

 | August 11, 2015 |  Posted In: Insight for DBAs, Insight for Developers, MySQL, Quality Assurance

My server is crashing… Now what? This special episode in the MySQL QA Series is for customers or users experiencing a crash. A crash? Cheat sheet: https://goo.gl/rrmB9i Sever install & crash. Note this is as a demonstration: do not action this on a production server! sudo yum install -y http://www.percona.com/downloads/percona-release/redhat/0.1-3/percona-release-0.1-3.noarch.rpm sudo yum install -y Percona-Server-client-56 Percona-Server-server-56 sudo service […]

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MySQL QA Episode 11: Valgrind Testing: Pro’s, Con’s, Why and How

 | August 4, 2015 |  Posted In: Insight for DBAs, Insight for Developers, MySQL, Quality Assurance

MySQL QA Episode 11

Today’s episode is all about Valgrind – from the pro’s to the con’s, from the why to the how! This episode will be of interest to anyone who is or wants to work with Valgrind on a regular or semi-regular basis. Pro’s/Why Con’s How Using the latest version sudo [yum/apt-get] install valgrind #OR# sudo [yum/apt-get] remove […]

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MySQL QA Episode 10: Reproducing and Simplifying: How to get it Right

 | July 31, 2015 |  Posted In: Insight for DBAs, Insight for Developers, MySQL, Quality Assurance

MySQL QA Episode 10

Welcome to the 10th episode in the MySQL QA series! Today we’ll talk about reproducing and simplifying: How to get it Right. Note that unless you are a QA engineer stuck on a remote, and additionally difficult-to-reproduce or difficult-to-reduce bug, this episode will largely be non-interesting for you. However, what you may like to see […]

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MySQL QA Episode 9: Reducing Testcases for Experts: multi-threaded reducer.sh

 | July 28, 2015 |  Posted In: Insight for DBAs, Insight for Developers, MySQL, Quality Assurance

Welcome to MySQL QA Episode 9. This episode will go more in-depth into reducer.sh: Reducing Testcases for Experts: multi-threaded reducer.sh We will explore how to use reducer.sh to do true multi-threaded testcase reduction – a world’s first. Topics: Expert configurable variables & their default reducer.sh settings PQUERY_MULTI PQUERY_MULTI_THREADS PQUERY_MULTI_CLIENT_THREADS PQUERY_MULTI_QUERIES PQUERY_REVERSE_NOSHUFFLE_OPT Full-screen viewing @ 720p resolution […]

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