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From "Prasad Mujumdar (Assigned) (JIRA)" <>
Subject [jira] [Assigned] (FLUME-772) MemoryChannel should push events back into channel on rollback
Date Thu, 06 Oct 2011 01:36:30 GMT


Prasad Mujumdar reassigned FLUME-772:

    Assignee: Prasad Mujumdar
> MemoryChannel should push events back into channel on rollback
> --------------------------------------------------------------
>                 Key: FLUME-772
>                 URL:
>             Project: Flume
>          Issue Type: Improvement
>    Affects Versions: NG
>            Reporter: E. Sammer
>            Assignee: Prasad Mujumdar
>            Priority: Blocker
> Currently the MemoryChannel (i.e. the "best effort" channel) transaction provider drops
events if the consumer rolls back. In other words a sink that does:
> {code}
> tx = channel.getTransaction()
> event = channel.take()
> tx.rollback()
> {code}
> ...loses the event. Instead, the event should be pushed back into the channel so it's
redelivered. Ideally, it should be inserted at the end of the channel to be as close to totally
ordered as possible. There is the question of what to do if the channel is at capacity.

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