[infinispan-dev] Generated keys affected by rehash Was: https://issues.jboss.org/browse/ISPN-977

[Erik Salter]

Yes, collocation of all keys is a large concern of my application(s).

Currently, I can handle keys I'm in control of (like database-generated keys), where I can play around with the hash code.   What I would love to do is collocate that data with keys I can't control (like UUIDs) so that all cache operations can be done in the same transaction on the data owner's node.

Erik

-----Original Message-----
From: infinispan-dev-bounces at lists.jboss.org [mailto:infinispan-dev-bounces at lists.jboss.org] On Behalf Of Manik Surtani
Sent: Friday, May 13, 2011 5:25 AM
To: infinispan -Dev List
Subject: [infinispan-dev] Generated keys affected by rehash Was: https://issues.jboss.org/browse/ISPN-977


On 11 May 2011, at 18:47, Erik Salter wrote:

> Wouldn't any rehash affect the locality of these generated keys, or am I missing something?

It would.  And hence ISPN-977, to address that.  Or is your concern keys already generated before the rehash?  The latter would certainly be a problem.  Perhaps, if this was important to the application, on detecting a change in topology, re-generate keys and move data around?  For other apps, move the "session" to the appropriate node?

Cheers
Manik
--
Manik Surtani
manik at jboss.org
twitter.com/maniksurtani

Lead, Infinispan
http://www.infinispan.org




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