Mark,
I
don't really like the word conductor, it reminds me trains not transactions. I
don't think coordinator is overloaded.
Cohesion sounds fine, although a little too academic.
How about "Web transactions" or "Light-weight transactions"?
Anyway, I think there is convergence on the terminology
and requirements. 4/30 is approaching, so do you think that you guys (the bt
models group) can start to put together a draft requirements/use
cases/terminology document that we can discuss at the 4/23
f2f?
Thanks: Pal
-----Original Message-----
From: Mark Little
[mailto:]
Sent: Tuesday, April 10, 2001 5:25
AM
To: bt models
Subject: terminology
Last night we discussed some terminology again, and (amongst the 3 of us
who were there) seemed to reach some agreement. I said I'd email the results
of the discussion:
(i) there definitely seems to be a need for a terminator actor as well as
an initiator. In many cases the initiator and terminator may well be
colocated, but that need not be the case (e.g., I begin a BT, but pass control
of it to someone else to determine whether it should commit or rollback in my
absence).
(ii) the idea of a conductor instead of coordinator was discussed. The
conductor term isn't used in this domain as far as we can see, and may help to
remove some confusion, especially if people use an ACID transaction system in
collaboration with the BTP.
(iii) rather than distinguish between a participant who is a subordinate
conductor, we should probably just say that that's an implementation choice
for the participant, i.e., as far as the conductor is concerned it sends a
prepare message, and what the recipient participant does to come up with the
return value is up to it.
(iv) cohesion sounded OK to those involved, though I think Keith was
going to see if he could come up with something else.
(v) atomic group is overloaded terminology too, tending to imply group
communication using, say, atomic multicast or virtual synchrony. Atomic
unit?
Mark.
----------------------------------------------
Dr. Mark Little ()
Transactions Architect,
HP Arjuna Labs
Phone +44 191 2064538
Fax +44 191
2064203
