- **status**: review --> fixed
---
** [tickets:#748] IMM: Clarify that completed-callback is meaningsless for
appliers**
**Status:** fixed
**Created:** Fri Jan 24, 2014 04:49 PM UTC by Anders Bjornerstedt
**Last Updated:** Fri Jan 24, 2014 05:03 PM UTC
**Owner:** Anders Bjornerstedt
Some applications mistakenly try to use the completed callback for appliers
as a trigger to fetch the "before image" of objects that are changed in the CCB.
The before image may be needed by an applier if the applier does not
continuously keep a copy of the monitored data and the *action* that the applier
is expected to take in the apply callabck depends on bot the "before image" and
the "after image", i.e. the exact change, not just the replacement value.
This will not work for appliers because the completed callback is invoked but
not waited on by the immsv. Waiting on a reply from completed callbacks from
all appliers makes no senses since they dont participate in validation and
this would slow down the apply of a CCB by an unknown ammount. The effect
would also be that appliers could veto a CCB by simply hanging in the callback,
intentionally or not.
---
Sent from sourceforge.net because [email protected] is
subscribed to https://sourceforge.net/p/opensaf/tickets/
To unsubscribe from further messages, a project admin can change settings at
https://sourceforge.net/p/opensaf/admin/tickets/options. Or, if this is a
mailing list, you can unsubscribe from the mailing list.
------------------------------------------------------------------------------
CenturyLink Cloud: The Leader in Enterprise Cloud Services.
Learn Why More Businesses Are Choosing CenturyLink Cloud For
Critical Workloads, Development Environments & Everything In Between.
Get a Quote or Start a Free Trial Today.
http://pubads.g.doubleclick.net/gampad/clk?id=119420431&iu=/4140/ostg.clktrk
_______________________________________________
Opensaf-tickets mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/opensaf-tickets
