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Displaying posts with tag: mariadb (reset)
MariaDB Server 10.2 GA Release Overview

This blog post looks at the recent MariaDB Server 10.2 GA release.

Congratulations to the MariaDB Foundation for releasing a generally available (GA) stable version of MariaDB Server 10.2! We’ll definitely spend the next few weeks talking about MariaDB Server 10.2, but here’s a quick overview in the meantime. Keep in mind that when thinking about compatibility, this is meant to be the equivalent of MySQL 5.7 (GA: October 21, 2015, with Percona Server for MySQL 5.7 GA available February 23, 2016).

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MySQL Support Engineer's Chronicles, Issue #6

Previous post in series was published almost 4 months ago, but I do not plan to end it. So, let me quickly discuss some of problems I worked on or was interested in so far in June, and provide some useful links.

Back on June 2 I had to find out what exact files are created by MariaDB's ColumnStore when I create a table in this storage engine. Actually in recent versions one can check the tables in the INFORMATION_SCHEMA, but if still wonders why are all these directories with numbers in the names (/usr/local/mariadb/columnstore/data1/000.dir/000.dir/011.dir/193.dir/000.dir/FILE000.cdf), please, check also this …

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MariaDB Galera Cluster 10.0.31 and Connector/Java 2.0.2 now available

The MariaDB project is pleased to announce the immediate availability of MariaDB Galera Cluster 10.0.31, MariaDB Connector/J 2.0.2, and MariaDB Connector/J 1.6.1. See the release notes and changelogs for details. Download MariaDB Galera Cluster 10.0.31 Release Notes Changelog What is MariaDB Galera Cluster? MariaDB APT and YUM Repository Configuration Generator Download MariaDB Connector/J 2.0.2 Release […]

The post MariaDB Galera Cluster 10.0.31 and Connector/Java 2.0.2 now available appeared first on MariaDB.org.

MariaDB 10.1.24 and Connector/C 2.3.3 now available

The MariaDB project is pleased to announce the immediate availability of MariaDB 10.1.24, and MariaDB Connector/C 2.3.3. See the release notes and changelogs for details. Download MariaDB 10.1.24 Release Notes Changelog What is MariaDB 10.1? MariaDB APT and YUM Repository Configuration Generator Download MariaDB Connector/C 2.3.3 Release Notes Changelog About MariaDB Connector/C Thanks, and enjoy […]

The post MariaDB 10.1.24 and Connector/C 2.3.3 now available appeared first on MariaDB.org.

Percona Software and Roadmap Update with CEO Peter Zaitsev: Q2 2017

This blog post is a summary of the Percona Software and Roadmap Update – Q2 2017 webinar given by Peter Zaitsev on May 4, 2017. This webinar reflects changes and updates since the last update (Q1 2017).

A full recording of this webinar, along with the presentation slide deck, can be found here.

Percona Software

Below are the latest and upcoming features in Percona’s software. All of Percona’s software is 100% free and open source, with no …

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ICP Counters in information_schema.INNODB_METRICS

In this blog, we’ll look at ICP counters in the information_schema.INNODB_METRICS. This is part two of the Index Condition Pushdown (ICP) counters blog post series. 

As mentioned in the previous post, in this blog we will look at how to check on ICP counters on MySQL and Percona Server for MySQL. This also applies to MariaDB, since the INNODB_METRICS table is also available for MariaDB (as opposed to the Handler_icp_% counters being MariaDB-specific). We will use the same table and data set as in the previous post.

For simplicity we’ll show the examples on MySQL 5.7.18, but they …

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Better Replication when running both InnoDB and MyRocks (or other Storage-Engines)

Kristian Nielsen is working on a new feature for MariaDB 10.3 and he published very interesting results.  This feature is MDEV-12179: Per-engine mysql.gtid_slave_pos tables.  He writes about replicating twice as fast in the worst case when using two storage engines (InnoDB and MariaRocks in his tests, but could also be InnoDB and TokuDB or TokuDB and MyRocks).  I will let you read all the details

How to login in MariaDB with OS user without password

What is the solution if I don’t want to give password in command line (i.e mysql -uroot -p ) OR don’t want to store password in files(in .my.cnf) and still can login into MySQL/MariaDB without password ? I was also bit curious to know but finally I found very easy solution called “unix_socket plugin” provided by MariaDB.

This plugin allows to use operating system user credentials while connecting to MariaDB via Unix socket. When we try to connect with OS user, it will retrieve uid of the process which has connected to the socket and allow it to connect to MariaDB with the same user.

You can simply install that plugin with command,

MariaDB [(none)]> INSTALL PLUGIN unix_socket SONAME 'auth_socket';
Query OK, 0 rows affected (0.02 sec)

After, then you need to identify the user which you want to use to login into MariaDB. Like for me,

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Percona Live Open Source Database Conference 2017 Slides and Videos Available

The slides and videos from the Percona Live Open Source Database Conference 2017 are available for viewing and download. The videos and slides cover the keynotes, breakout sessions and MySQL and MongoDB 101 sessions.

To view slides, go to the Percona Live agenda, and select the talk you want slides for from the schedule, and click through to the talk web page. The slides are available below the talk description. There is also a page with all the slides that is searchable by topic, talk title, speaker, company or keywords.

To view videos, go to the …

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Improving replication with multiple storage engines

New MariaDB/MySQL storage engines such as MyRocks and TokuDB have renewed interest in using engines other than InnoDB. This is great, but also presents new challenges. In this article, I will describe work that I am currently finishing, and which addresses one such challenge.

For example, the left bar in the figure shows what happens to MyRocks replication performance when used with a default install where the replication state table uses InnoDB. The middle bar shows the performance improvement from my patch.

Current MariaDB and MySQL replication uses tables to transactionally record the replication state (eg mysql.gtid_slave_pos). When non-InnoDB storage engines are introduced the question becomes: What engine should be used for the replication table? Any choice will penalise other engines heavily by injecting a cross-engine transaction with every replicated change. Unless all tables can be migrated to the …

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