[Gluster-devel] FUSE nodes TTL and FORGET

[Raghavendra Gowdappa]

----- Original Message -----
> From: "Emmanuel Dreyfus" <manu at netbsd.org>
> To: "Raghavendra Gowdappa" <rgowdapp at redhat.com>
> Cc: gluster-devel at nongnu.org
> Sent: Monday, June 18, 2012 10:15:40 AM
> Subject: Re: [Gluster-devel] FUSE nodes TTL and FORGET
> 
> Raghavendra Gowdappa <rgowdapp at redhat.com> wrote:
> 
> > I am little bit confused here about uselessness of FORGET messages
> 
> Once a node TTL is expired, you will have to do a LOOKUP again, but
> if
> you can avoid doing a FORGET for a node you are going to lookup again
> immediatly, you save the cost of the FORGET operation. This is the
> rationale for postponing FORGET a bit, so that you have an
> opportunity
> to cancel it because the node is still being used.

Wouldn't tinkering with TTL value achieve similar functionality? Or is it that a fixed TTL value is too static to predict next lookup?

> 
> --
> Emmanuel Dreyfus
> http://hcpnet.free.fr/pubz
> manu at netbsd.org
>