Percona XtraBackup is an open source hot backup utility for MySQL-based servers. To take consistent and hot backup, it uses various locking methods, especially for non-transactional storage engine tables. This blog post discusses the cause and possible solution for queries with ​Waiting for table flush state in processlist when taking backups using Percona XtraBackup. Only MySQL 5.7 version is affected by this, as per my tests.

Type of locks taken by Percona XtraBackup

Before discussing the main issue, let’s learn about the type of locks used by Percona XtraBackup to take consistent backups. Percona XtraBackup uses backup locks as a lightweight alternative to FLUSH TABLES WITH READ LOCK. This feature is …

Amazon instance profiles are used to pass IAM roles to an EC2 instance. This IAM role can be queried using EC2 instance metadata to access an S3 bucket. Please check Amazon’s Official Documentation for more information.

Today we are happy to announce that starting with Percona XtraBackup 8.0.31-24, xbcloud can read instance metadata and fetch credentials from an instance profile, utilizing it to authenticate against an S3 bucket. Xbcloud is a tool part of Percona XtraBackup and allows you to upload and download backups to Amazon S3 storage.

How it works

Configure your EC2 instance …

Summary of the preFOSDEM MySQL Days 2023

I discovered a dependency for MySQL Workbench on AlmaLinux 8 installation. I neglected to fully cover it when I documented the installation in a VM of AlmaLinux 9. I go back later and update that entry but for now you need the following dependencies:

proj-6.3.2-4.el8.x86_64.rpm
proj-datumgrid-1.8-6.3.2.4.el8.noarch.rpm
proj-devel-6.3.2-4.el8.x86_64.rpm

Install like this:

sudo dnf install -y *.rpm

Log file:

Last metadata expiration check: 3:01:53 ago on Fri 10 Feb 2023 03:37:49 AM UTC.
Dependencies resolved.
==========================================================================================
 Package                Architecture   Version                 Repository            Size
==========================================================================================
Installing:
 proj                   x86_64         6.3.2-4.el8             @commandline         2.0 M
 proj-datumgrid         noarch …

Learn how to migrate from Postgres to MySQL Postgres vs MySQL incompatibilities and more.

MySQL HeatWave Best Practices Series: Data load to HeatWave with MySQL Autopilot   In the first blog of the best practices series, we discussed the best practices for schema design. In this blog, we go into details of best practices of loading data to HeatWave. This is the first criteria of running queries in HeatWave […]

MySQL HeatWave Best Practices Series: Data load to HeatWave with MySQL Autopilot

In 2023, FOSDEM returned as an in-person conference after being virtual for 2 years. With this comeback, the MySQL Team once again hosted the very popular preFOSDEM MySQL Days, a side event we have been doing since 2018. It was a blast ! It was great to see so many friends of MySQL in person. […]

After having cancelled 2 editions of the preFOSDEM MySQL Days because of the pandemic, we were finally back last week in Brussels for 2 wonderful days dedicated to the Dolphin database developed by Oracle. During this event and for the first time, we, the MySQL Team, decided to reward some members of the MySQL Community […]

The winners of the MySQL Rockstar 2022 Awards