Hi all,
It is time to plan for new Sequoia developments. Here is a roadmap
proposal for Sequoia 4.x and 5.x.
As 3.0 is now obsolete, the goal is to start a new 4.0 version based on
the current 2.10.10 code base. We need to define the feature set that
will go in Sequoia 4.x and 5.x so that the open source version (in HEAD)
can move forward as fast as the feedback comes from the community, but
it remains stable enough so that Continuent can elaborate products on
stable versions.
Your feedback is very important if you want to get your requirements
included. This is the time to influence the design and evolution of Sequoia.
*_Sequoia 4.x features:_*
- Controller configuration cleanup (based on 3.x implementation):
Mandatory JMX, fix JDBC/JMX IP/port configuration, SSL configuration
refactoring, remove deprecated AccessControl and Internationalization.
- New virtual database autoload feature including loading files through HTTP
- Support for semantic information (as in 3.x) to support pluggable
parsing, stored procedures, ,views and triggers
- Cleanup obsolete load balancers/schedulers (RAIDb1-ec, RAIDb2-ec...)
- Cluster-wide shutdown to allow controller restart in any order
- Pluggable DatabaseBackend implementations for database specific
preconfigured implementations (ie. MySQLBackend, OracleBackend...
simplifies vdb config)
- Pluggable RecoveryLog implementations for database specific
preconfigured implementations (simplifies vdb config)
- Tunable macro handling (as currently available in 3.x)
- Support for host-based access control in virtual database (as in 3.x)
- Support for default cluster-wide admin user
- Drop support for static schemas
- Mandatory Backup element
- Mandatory Recovery Log element (Does anyone use a controller without
recovery log?)
- Support for default connection manager and different URL options in
connection pools (as in 3.x)
- Drop JDK 1.4 support (move to JDK >=1.5 and clean code accordingly)
- XML parsing refactoring
- Support for embedded controllers
- Open source test suite contributed by Continuent in GPL (will start in
May with Minimum Acceptance Tests)
*_Sequoia 5.x features:_*
- Controller metadata repository to persist controller state with
automatic shutdown/restart procedures
- Support for certification-based transactional replication protocols
- Support for transactional upgrades and management operations
- ResultCache refactoring and optimizations
- JDK >=1.6 only with JDBC 4 support
- Extend test suite with pluggable virtual appliances containing
contributed 3rd party database
- Resume Oak project (Eclipse RCP graphical console)
_*Not scheduled yet:*_
- Split code in multiple projects: load balancer (single controller
configuration), high availability (multiple controllers)
- Virtual RDBMS (manages a RDBMS globally, not on a per virtual database
instance)
- Unique cluster-wide configuration file
Your feedback is welcome and we are going to publish soon the roadmap on
the Sequoia web site.
I should start working on Sequoia 4 next week so don't hesitate to step up!
Best regards,
Emmanuel
--
Emmanuel Cecchet - Research scientist
EPFL - LABOS/DSLAB - IN.N 317
Phone: +41-21-693-7558
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