v0.0.5

Release Notes

• This release ensures intermediate synchronisation checks are relative and proportional to the queue message depth. A new configuration is introduced, sync_verification_factor which applies verification check delays proportional to the queue depth of the current queue undergoing balance transition. This ensures resilient handling of queues bearing high message counts, and duration of queue balancing will ultimately take as (factorially) long the number of queue messages - #7
• The policy_transition_delay is also now relative to the queue message depth. When queues undergo balance, it will transition through different states, upon which it/they will be moved to nodes of least master queues to attain overall cluster equilibrium - #7
• Internal default GenFSM state event call timeouts have been bumped up to 30s #8
• GenFSM deprecation warnings have been turned off. GenStateM version of the internal FSM remains on the roadmap #4 (until seen fitting to replace the current GenFSM core)
• Build tools, erlang.mk and rabbitmq-components.mk have been updated, thanks to Luke Bakken - #9
• The documentation has been updated to reflect message relative delay updates and more precise build and packaging instructions for both RabbitMQ 3.6.x and 3.7.x releases

Release Packages (attached)

• The package compatible to RabbitMQ 3.7.x is rabbitmq_queue_master_balancer-0.0.5.ez.
• The package compatible to RabbitMQ 3.6.x is rabbitmq_queue_master_balancer-0.0.5___3.6.x.ez.
• Refer to the build instructions for more detail on building packages.

v0.0.4

• Transition policy timing delays caused referencing of queue master PIDs which had
  terminated, e.g. following application or fallback of policies while queue state and
  active PIDs in Mnesia were still set on old/terminated PID. This release introduces
  resolution of this issue, as queue load and traffic pattern variations previously resulted
  in intermittent transition cycle inconsistencies, resulting in queue incarnated PIDs
  being made the primary entity of reference.
• NOTE: This release is the first off v3.7.x branch. Previous releases have been off stable.

v0.0.3

• Significantly optimized FSM engine memory utilization
• Improved queue master capacity tolerance (e.g. to the order of hundreds of thousands, and millions)
• Introduction of FSM independent/non-service obstructing rabbit_queue_master_balancer:status/0 call
• API enhancements with user defined timeouts for
  rabbit_queue_master_balancer:load_queues/1
rabbit_queue_master_balancer:info/1
rabbit_queue_master_balancer:report/1
  calls during long running queue master balancing executions
• Increased configuration settings for safe-guarded off-the shelf, default operation

v0.0.2

Support for RabbitMQ 3.7.x release series.

v0.0.1

Launchpad! - plugin's first pre-release.