[infinispan-dev] Collocated nodes

Manik Surtani manik at jboss.org
Tue Sep 28 14:50:53 EDT 2010


How are things looking on the impl anyway?

On 28 Sep 2010, at 18:02, Vladimir Blagojevic wrote:

> Manik,
> 
> I believe this is going to work as well. As long as hash is placing nodes to same positions in subsequent views and we deterministically devise the neighbour picking algorithm we should be fine. Your suggestion indeed seems elegant and simple.
> 
> Cheers,
> Vladimir
> 
> 
> On 2010-09-27, at 12:05 PM, Manik Surtani wrote:
> 
>> 
>> Perhaps even a simpler idea would be to naively place nodes on the hash wheel, and when you need to select nodes as hosts, pick the first one as usual, and for subsequent nodes, walk clockwise and pick nodes, discarding them if they have the same rack id and machine id.  Once you cycle back to the first node selected, repeat but this time discarding only for a machine id match.  And again, if you cycle back to the first node selected, don't discard any nodes, regardless of machine id/rack id match.  
>> 
>> Thoughts?
>> 
>> 
> 
> 
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--
Manik Surtani
manik at jboss.org
Lead, Infinispan
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