Further to our earlier blog post about Fail-safe enhancements to Group Replication, where we discussed enhancements against data modification in members which are not ONLINE, we now present here additional changes to protect data from being accidentally modified by asynchronous replication channels.…
Category Archives: Group Replication
Performance Improvements in MySQL 8.0 Replication
MySQL 8.0 became Generally Available (GA) on April 19th, a great moment for us working on MySQL at Oracle. It is now a “fully grown adult” packed with new features, and improvements to existing features, as described here.
This blog post focuses on the impact of replication performance improvements that went into MySQL 8.0.…
Replication Features in MySQL 8.0.4
MySQL 8 second release candidate is out (MySQL 8.0.4). Besides fixes to replication issues we have also delivered a couple of enhancements in this release. Let me quickly summarize them.
- Additional instrumentation for Group Replication (WL#9856). We have instrumented mutexes and condition synchronization objects on the group communication library.
Group Replication Features backported to MySQL 5.7
We have brought further enhancement to MySQL Group Replication 5.7 release by backporting some most requested features to MySQL 5.7.20 release:
- Member weight for automatic primary election on failover
- Disallow writes after leaving the group
And to MySQL 5.7.19 release:
- Transaction savepoint support
Member weight for automatic primary election on failover
The Member weight for automatic primary election on failover feature will allow user to influence primary member election using a integer member weight value.…
Replication Features in MySQL 8.0.3
Great news! MySQL 8.0.3 is out and it is a release candidate. In the replication team we have been busy working on interesting new enhancements and also doing some clean up. Some of these new features are out in this release.…
Group Replication: Prioritise member for the Primary Member Election
In initial Group Replication release, 5.7.17, we included the Single-Primary Mode with automatic membership and fail-over features. The MySQL Server 8.0.2 release has brought further enhancement to Group Replication Single-Primary Mode that will allow users to influence primary member election using integer member weight value.…
Group Replication – Extending Group Replication performance_schema tables
In MySQL 8.0.2, users will see the additional columns in the existing Group Replication Performance Schema tables which will provide extended information about Group Replication. Now user can view role and MySQL version of each member of the group, which earlier required a complex set of query.…
Protecting your data! Fail-safe enhancements to Group Replication.
Group Replication has been around for some time now and the feedback from community is overwhelming. One of the suggestions (BUG#84795) received is related to deploying a mechanism to prevent a server from being updated after stopping group replication.…
Replication Features in MySQL 8.0.2
MySQL 8 is shaping up quite nicely. And we are having a blast in the MySQL replication team while this is happening. We are continuously improving all-things-replication by introducing new and interesting features. In addition, we have been listening to our community and addressing their feedback.…
Group Replication support SAVEPOINT
Group Replication has been around as GA for some months now. Nonetheless, work continues and now we are happy to let you know that you can now use transaction savepoints when write-set extraction is enabled.
This enhancement was released as in MySQL 8.0.1.…