A data lake is “…a method of storing data within a system or repository, in its natural format, that facilitates the collocation of data in various schemata and structural forms…”1. Many companies find value in using a data lake but aren’t clear that they need to properly plan for it and maintain it in order to prevent issues.

The idea of a data lake rose from the need to store data in a raw format that is accessible to a variety of applications and authorized users. Hadoop is often used to query the data, and the necessary structures for querying are created through the query tool (schema on read) rather than as part of the data design (schema on write). There are other tools available for analysis, and many cloud providers are actively developing additional options for creating …

The schema changes in production can cause lock at time and makes the slave to lag. It is more tedious and troublesome with PXC ( Galera ) cluster which can be made smoother with Percona online schema change.

Image Courtesy : Photo by Andrew Ruiz on Unsplash

Let us show you how to install MySQL on your CentOS 7 server. MySQL is a relational database management system ...

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Percona announces the release of Percona Server for MySQL 5.6.40-84.0 on May 30, 2018 (downloads are available here and from the Percona Software Repositories). Based on MySQL 5.6.40, including all the bug fixes in it, Percona Server for MySQL 5.6.40-84.0 is now the current GA release in the 5.6 series. All of Percona’s software is open-source and free.

New Features

• A new string variable version_suffix allows to change suffix for the Percona Server version string returned by the read-only version variable. …

MySQL’s InnoDB Cluster was released on Apr 12, 2017, with version 5.7 and is also included in MySQL version 8.0.

MySQL InnoDB cluster provides a complete high availability solution for MySQL. MySQL Shell includes AdminAPI which enables you to easily configure and administer a group of at least three MySQL server instances to function as an InnoDB cluster. Each MySQL server instance runs MySQL Group Replication, which provides the mechanism to replicate data within InnoDB clusters, with built-in failover. AdminAPI removes the need to work directly with Group Replication in InnoDB clusters, but for more information see Chapter 18, Group Replication which explains the details. MySQL Router can automatically configure itself based on the cluster you …

MySQL has had spatial indexes for many years, but they have all been Cartesian (X and Y coordinates) indexes. MySQL 8.0 adds support for geographic (latitude-longitude) indexes. In an earlier blog post, I described how the feature works. In this post, we’ll go into the details of how to upgrade from 5.7 to 8.0 if you have spatial indexes.…

In a recent post, my colleague and teammate Peter Sylvester explained how we could customize MySQL’s configuration when running it as a Docker container.

Today I want to show you how to debug a Dockerized MySQL process. Let me start by showing you how I am starting my test container:

[fipar@coltrane ~]$ sudo docker run --memory-swappiness=1 -p 3308:3306 --name=mysql1 -e MYSQL_ROOT_PASSWORD=password -d mysql/mysql-server:5.7
Unable to find image 'mysql/mysql-server:5.7' locally
Trying to pull repository docker.io/mysql/mysql-server ...
5.7: Pulling from docker.io/mysql/mysql-server
Digest: sha256:eb3aa08c047efcb3e6bfcc3a28b80a2ec8c67b4315712b26679b0b22320f0b4a
Status: Downloaded newer image for docker.io/mysql/mysql-server:5.7 …

At my latest webinar “MySQL Test Framework (MTR) for Troubleshooting”, I received an interesting question about MTR test cases for Percona XtraDB Cluster (PXC). Particularly about testing SST and IST.

This post is intended to answer this question. It assumes you are familiar with MTR and can write tests for MySQL servers. If you are not, please watch the webinar recording first.

You can find example tests in any PXC tarball package. They are located in directories

mysql-test/suite/galera

 ,

mysql-test/suite/galera_3nodes

  and

mysql-test/suite/wsrep

 , though that last directory only contains a configuration file.

If you …

My book MySQL and JSON - A Practical Programming Guide is now available! My promotional copies have arrived and I will be bringing them to PHP Tek, SyntaxCon, and Southeast Linuxfest in the next two weeks.

This is a book on discovering how to use JSON with MySQL with lots of examples, samples programs, and more.  Please order your copy today. Order From Amazon

Oracle Cloud Infrastructure (OCI) is Oracle’s second-generation cloud infrastructure. These new datacenters were built with the latest high-performance servers (Oracle’s X7 Servers) and were designed to eliminate network and CPU oversubscription. Due to high-performance systems and the multiple availability domains (ADs) in each region, these are the preferred environments for deploying MySQL. Since MySQL deploys on Compute services (IaaS), look for “Oracle Cloud Infrastructure Compute” (not Classic) on this region map.

Beyond the benefits of the second-generation datacenters, why deploy MySQL on Oracle’s cloud? Here’s a few of reasons people are choosing MySQL on OCI:

• No vendor lock-in: pay minimal or no egress charges and directly access your binary data files. Getting your data out of other clouds can be tedious and expensive. …