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Re: [Gluster-devel] Replicate/AFR Using Broadcast/Multicast?

From: Craig Carl
Subject: Re: [Gluster-devel] Replicate/AFR Using Broadcast/Multicast?
Date: Tue, 12 Oct 2010 19:32:13 -0500 (CDT)

Gordon -
    PGM is still experimental so it will be a while before we would consider implementing it, I would also expect to see network issues as a cluster grows. It would also limit a Gluster cluster to a single broadcast domain. We would have to find a way to manage these challenges, do you have any thoughts?



Craig Carl
Senior Systems Engineer; Gluster, Inc.
Cell - (408) 829-9953 (California, USA)
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Installing Gluster Storage Platform, the movie!

From: "Gordan Bobic" <address@hidden>
To: "Gluster List" <address@hidden>
Sent: Tuesday, October 12, 2010 1:03:45 AM
Subject: [Gluster-devel] Replicate/AFR Using Broadcast/Multicast?

Are there any plans to implement Replicate/AFR using broadcasts (on a
LAN) or multicast? At the moment, write performance scales inversely
linearly (O(n)) as additional nodes are added, which gets in the way of
scalability. It'd be really useful if this could be done using reliable
multicast (e.g. PGM), as the scaling wouldn't be inverse (it would go to
O(1)). Are there any plans in this direction?


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