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From aledsage <>
Subject [GitHub] incubator-brooklyn pull request: membership tracking policy defaul...
Date Wed, 16 Jul 2014 15:26:30 GMT
Github user aledsage commented on the pull request:
    Background for this change... originally the AbstractMembershipTrackingPolicy was not
configurable. It would not notify of duplicates for serviceUp, but would for other attributes.
    This was changed a while back so it was configurable, but trying to preserve original
behaviour. However, there was a bug: serviceUp duplicates were being sent through, resulting
in 1000s of effector calls in some entities trying to respond to the change!
    Given the event is "entityChanged" it makes sense for the default to be false. For places
where it is important to get the duplicate (e.g. where timestamps are important for recording
workload etc) then one can configure the policy accordingly.

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