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MySQL 8 Cookbook

You're reading from MySQL 8 Cookbook

Product type Book

Published in Jan 2018

Publisher

ISBN-13 9781788395809

Pages 446 pages

Edition 1st Edition

Languages

Concepts

Database Administration

Author (1):

Karthik Appigatla

Table of Contents (20) Chapters

Title Page

Dedication

Packt Upsell

Contributors

Preface

1. MySQL 8 - Installing and Upgrading

2. Using MySQL

3. Using MySQL (Advanced)

4. Configuring MySQL

5. Transactions

6. Binary Logging

7. Backups

8. Restoring Data

9. Replication

10. Table Maintenance

11. Managing Tablespace

12. Managing Logs

13. Performance Tuning

14. Security

Index

Altering tables using an online schema change tool

In this section, you will learn about Percona's pt-online-schema-change (pt-osc) tool, which is used to perform ALTER TABLE operations without blocking DMLs.

pt-osc comes along with Percona Toolkit. Installation of Percona Toolkit has already been described earlier in the chapter.

How it works...

(Taken from https://www.percona.com/doc/percona-toolkit/LATEST/pt-online-schema-change.html.)

pt-online-schema-change works by creating an empty copy of the table to alter, modifying it as desired, and then copying rows from the original table into the new table. When the copy is complete, it moves away the original table and replaces it with the new one. By default, it also drops the original table.

The data copy process is performed in small chunks of data, which are varied to attempt to make them execute in a specific amount of time. Any modifications to data in the original tables during the copy will be reflected in the new table, because the tool...

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Authors (1)

Karthik Appigatla

Karthik Appigatla is a highly reputed database architect and is very famous for performance tuning. He has been consulted by many companies all over the world for designing, performance tuning, building database infrastructure, and training. In his decade of experience, he has worked for companies such as Yahoo, Pythian, and Percona. Currently, he is working for LinkedIn, where he has innovated a new way of analyzing queries. He gave a talk about this at SRECon, Dublin in 2017.

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