mogilefs + WAN
Brad Fitzpatrick
brad at danga.com
Tue Aug 7 20:00:08 UTC 2007
With a custom ReplicationPolicy, MogileFS can already do this. There
might be one more hook needed in the get_paths code to alter the selection
of paths returned, but the replication part is already extensible enough
for this.
On Thu, 19 Jul 2007, Will Lowe wrote:
> Has anyone looked at using mogilefs to run a cluster that's
> distributed across a WAN? TCP latency is usually the biggest issue in
> a situation like this. Usually the workarounds involve custom UDP
> protocols or multistreaming over TCP -- but MogileFS already has the
> multi-stream thing solved.
>
> Seems like it'd be possible to build something that's NUMA-like, where
> a tracker could know that some storage nodes are further away than
> others, arrange to transfer data only once to the remote cluster,
> etc. ... at some point I'd think replicating the mySQL end of things
> would be the hardest part, although mySQL seems to handle
> master-master pretty well.
>
> --
> Will
>
>
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