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From Apache Wiki <wikidi...@apache.org>
Subject [Jackrabbit Wiki] Update of "Clustering the Microkernel" by MichaelDürig
Date Wed, 15 Feb 2012 18:07:10 GMT
Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Jackrabbit Wiki" for change notification.

The "Clustering the Microkernel" page has been changed by MichaelDürig:
http://wiki.apache.org/jackrabbit/Clustering%20the%20Microkernel?action=diff&rev1=2&rev2=3

Comment:
Added presentation

  
  Another open question is how to synchronize conflicting transactions from different cluster
nodes. Merging can be done to a certain degree. Other cases might have to rollback transactions
on some cluster nodes. Consider for example the case where a node ''x'' is moved such that
it becomes a child of node ''y'' on one cluster node and at them same time node ''y'' is moved
such that it becomes a child of node ''x'' on another cluster node. The situation is inherently
symmetric and neither move can follow the other. On cluster synchronization there seems to
be no better way than to undo one (or both?) of the transactions which contained these move
operations. 
  
+ === Presentations ===
+ [[https://docs.google.com/presentation/pub?id=131sVx5s58jAKE2FSVBfUZVQSl1W820_syyzLYRHGH6E&start=false&loop=false&delayms=3000
| Clustering for Jackrabbit 3]]
+ 
+ === References ===
  
  [1] [[http://research.microsoft.com/en-us/people/philbe/ccontrol.aspx | Concurrency Control
and Recovery in Database Systems]]. Philip A. Bernstein, Vassos Hadzilacos, Nathan Goodman.
1987
  

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