Re: [wsrm] Preliminary minutes of WSRM TC Conf call -050603

[Tom Rutt <tom@coastin.com>]

Paolo Romano wrote:
>>4.4      REL-11 MESSAGE ID AND GROUPID/SEQUENCENO
> 
> ...
> 
>>Paulo stated that having two identifiers (such as groupID, sequenceNO) is
>>needed for several groups of messages with dependencies. Messages ordered
>>by groups is a use case we have often. He also would prefer one id
>>mechanism, but it could be a struct with groupID
> 
> 
> I guess I must have missed a "not" in the yesterday phone call...
> Actually, I can't imagine many common use cases where between two end
> points it is necessary to have simoultaneously multiple groups of messages
> which have to be ordered independently. This is why I consider redundant
> having two different identifiers (Group_id + Sequence_id), and I would
> prefer to use only one identifier for both duplicate elimination and
> sequence ordering. The advantages of such an approach would be:
> implementation simplification and reduced "verbosity" => overhead.
> 
> May be somebody can show us some use cases where the feature of having
> multiple groups of messages ordered is worthy the cost of using distinct
> identifiers for ordering and filtering out duplicates.
> 
> Paolo
> 
I will correct the final minutes to reflect this email

Tom Rutt

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Tom Rutt		email: tom@coastin.com; trutt@fsw.fujitsu.com
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