[jboss-dev-forums] [JBoss Transactions Development] - Re: Remote Txn Inflow: Synchronizations
Mark Little [http://community.jboss.org/people/marklittle] created the discussion
"Re: Remote Txn Inflow: Synchronizations"
To view the discussion, visit: http://community.jboss.org/message/630240#630240
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It is worth noting that afterCompletion is a best effort invocation too. Of course
you're supposed to try to call them for all registered synchronizations, but if they
aren't delivered (or are ignored), they'll have no impact on the transaction
outcome anyway. Synchronizations are required to be implemented to cope with
afterCompletion not being delivered anyway.
David Lloyd wrote:
Are we sure that we need afterCompletion synchronization processing to be executed in
terms of the root controller? The only time I can imagine it mattering is if it is
controlling some resource that is outside of the JVM, outside of the transaction, and yet
visible to other participants. If synchronizations are used for the purpose of
discovering the overall outcome of the transaction, then executing on the local node
achieves that purpose. Same thing if the purpose is to clean up some per-VM resource.
And I think these two use cases are by far the predominant ones.
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