The future of replication revealed in Istanbul|
A very good meeting in Istanbul is drawing to an end. People from Monty Program,
Facebook, Galera, Percona, SkySQL, and other parts of the community are
meeting with one foot on the European continent and another in Asia to discuss
all things MariaDB and MySQL and experience the mystery of the Orient.
At the meeting I had the opportunity
to present my plans and
visions for the future development of replication in MariaDB. My talk was very
well received, and I had a lot of good discussions afterwards with many of the
bright people here. Working from home in a virtual company, it means a lot to
get this kind of inspiration and encouragement from others on occasion, and I
am looking forward to continuing the work after an early flight to Copenhagen
The new interface for transaction coordinator plugins is what particularly
interests me at the moment. The immediate benefit of this work is
commit for transactions with the binary log enabled. But just as interesting (if
more subtle), the project is an enabler for several other nice features
related to hot backup and recovery. I spent a lot of effort working on the
interfaces to the transaction controller and related extensions to the storage
engine API, and I think the result is quite solid and a good basis for coming
After the transaction coordinator plugin, the next step is an API for event
generators that will allow plugins to receive replication events on an equal
footing with the built-in MySQL binary log implementation; I will be using
this in cooperation with Codership to more tightly integrate
their Galera synchronous replication
into MariaDB. And long-term, I am hoping to combine all of the pieces to finally
start attacking the general problem of parallel execution of events on
replication slaves, the solution of which is long overdue.
(The MariaDB replication
project page has lots of pointers to more information on the various
projects for anyone interested).
Almost too good to be true, out excursion today was blessed with sunshine and
mild weather after countless days of rain and storm. There were even rumours
of sightings of dolphins jumping again during the SkySQL excursion yesterday.
So while lots of hard work remains, all in all, the omens seem all good for
the future of replication in MariaDB!
Tags: freesoftware, mariadb, mysql, programming, replication