On Mon, 21 Feb 2011 11:56:39 +0100
Jakub Hrozek <jhro...@redhat.com> wrote:
> On Sat, Feb 19, 2011 at 11:47:45PM -0500, Rob Crittenden wrote:
> > I had to add a couple of short sleep calls to make things work a
> > little better. The memberof plugin runs as a postop and we have no
> > way of knowing when it has done its work. If we don't pause we may
> > show some stale data that memberof hasn't updated yet. .3 seconds is
> > an arbitrary choice.
> I don't know the DS plugin architecture good enough but there's no
> callback or anything we can hook to? If the machine swaps or
> something, we might get incorrect data with the sleep anyway..
Unfortunately the way plugins are done, post-ops are pretty much
impossible to catch from the outside.
And I really don't like this either.
I would definitely prefer for the reply to the modifying client to wait
until the memberof plugin is done, even if this means the operations
will be slow.
But I don't know if this can be done easily with the current DS
The problem is that we cannot even enter a read loop to wait smaller
amounts of time until we get back the right answer because a competing
client may change the membership while we are waiting and causing us to
loop forever ...
Simo Sorce * Red Hat, Inc * New York
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