[infinispan-dev] asynchronous change manager for high load Lucene

[Bela Ban]

Emmanuel Bernard wrote:
>> In other words, if we have to apply a change across a cluster, with 1 
>> message, total order can replace a two-phase lock-unlock protocol.
>
> In Lucene's term that would mean that an index copy is present on all 
> nodes (not store in Infinispan necessarily) and all changes are passed 
> and executed on all nodes (being passed in total ordering via JGroups).

Ah, that changes the game ! I thought that the index is some kind of 
metadata, present on every node. Of course, if that'snot the case, then 
SEQUENCER makes no sense...



-- 
Bela Ban
Lead JGroups / Clustering Team
JBoss