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MySQL Fabric (http://www.mysql.com/products/enterprise/fabric.html" target="_blank) servers can now be added to the Workbench home screen. When clicked, these connections will dynamically query the Fabric server and individual connections for all the managed MySQL servers will be created. You can then connect to each instance as usual.
MySQL uses metadata locking to manage access to objects (tables, triggers, and so forth). Sometimes that can be puzzling, as your query may block waiting on an object being manipulated by another connection from maybe another user. The Client Connections list was updated[Read more...]
Today SkySQL is changing its name to MariaDB Corporation. This is something that I had both anticipated and I think it’s a great step for MariaDB.
I wanted here to to share my thoughts on how this change affects the MariaDB community.
The short version: As the MariaDB Corporation is the main driving force behind the development of the MariaDB server and the biggest support provider for it, it makes sense to give it a name that clearly communicates this fact. The name change doesn’t of course stop the company to continue it’s excellent support for MySQL.
For MariaDB users and customers, the name change should not affect them in any way, except that it will make it easier for them to find more information about MariaDB as there is fewer names involved.
For the MariaDB Foundation, there is no big[Read more...]
We have received a lot of requests from our user community regarding the ability to truncate UNDO tablespaces (‘truncate’ here means that the size of the tablespace is reset back to what it was when it was first created). We are happy to say that we’ve now been able to implement this anticipated feature.
The InnoDB UNDO tablespace(s) host rollback segments that hold rollback information related to database changes. This information is used to rollback a transaction and to retrieve the previous version of a record that has been updated or deleted for multi-version concurrency control (MVCC). Once a transaction is committed, InnoDB will discard the related UNDO log records. UNDO log records for updates or deletes will be kept around as long as there exists an open transaction that may access older versions of the records. When all[Read more...]
The multi master plugin for MySQL is here. MySQL Group Replication provides virtually synchronous updates on any node in a group of MySQL servers, with conflict handling and automatic group membership management and failure detection.
For a better understanding on how things work, we go under the hood in this post and will analyse the transaction life cycle on multi master and which components does it interact with. But before that we need to understand first what a group is.
The multi master plugin is powered by a group communication toolkit. This is what decides which servers belong to the group, performs failure detection and orders server messages. Being the ordered messaging the magic thing that allows the data to be consistent across all nodes. You can check the details of the group communication[Read more...]
More MySQL releases than ever before. Check out the following that we just released:
- MySQL Connector Java 5.1.33 GA
- MySQL Fabric & MySQL Utilities 1.5.2 GA
- MySQL Connector Python 2.0.1 GA
- MySQL Fabric and Utilities 1.6.0 Alpha
- MySQL Connector C (Labs)
- MySQL Connector Python (Labs)
- MySQL Group Replication (Labs)
- MySQL HTTP Plugin (Labs)
Percona is pleased to announce the availability of Percona Toolkit 2.2.11. Released on Sept. 25, Percona Toolkit is a collection of advanced command-line tools to perform a variety of MySQL server and system tasks that are too difficult or complex for DBAs to perform manually. Percona Toolkit, like all Percona software, is free and open source.
This release contains bug fixes for pt-query-digest, pt-mysql-summary, pt-stalk, as well as other tools and is the current GA (Generally Available) stable release in the 2.2 series. Downloads are available[Read more...]
The multi master plugin for MySQL is here “MySQL Group Replication“. It is a virtual synchronous solution for MySQL with conflict detection. It also supports automatic group membership management, failure detection and automatic distributed recovery.
With the introduction of this new feature there was a need to perform some good amount of testing as it involves complex functionalities like :
So a great deal[Read more...]
Multi-master update everywhere solution for MySQL is here. MySQL Group Replication ensures virtual synchronous updates on any node in a group of MySQL servers, with conflict handling and failure detection. Distributed recovery is also in the package to ease the process of adding new nodes.
Starting with MySQL 5.7.2 there has been a constant effort from the replication team to provide more fields to monitor the replication performance in the performance schema tables. This post gives a brief overview of the Performance Schema tables that have been introduced for MySQL Group Replication.TABLES INTRODUCED
There are two new tables introduced as a part of the MySQL Group Replication monitoring.
Lets go through each table in detail :[Read more...]
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