I really didn't want to do this, but it looks like a 5.1.1 will be necessary.  
The biggest (critical, IMO, for 5.1.1) issues I see are:

1. https://issues.jboss.org/browse/ISPN-1786 - I presume this has to do with a 
bug Mircea spotted that virtual nodes were not being enabled by the config 
parser.  Which meant that even in the case of tests enabling virtual nodes, we 
still saw uneven distribution and hence poor performance (well spotted, 
Mircea).  
2. Related to 1, I don't think there is a JIRA for this yet, to change the 
default number of virtual nodes from 1 to 100 or so.  After we profile and 
analyse the impact of enabling this by default.  I'm particularly concerned 
about (a) memory footprint and (b) effects on Hot Rod relaying topology 
information back to clients.  Maybe 10 is a more sane default as a result.
3. https://issues.jboss.org/browse/ISPN-1788 - config parser out of sync with 
XSD!
4. https://issues.jboss.org/browse/ISPN-1798 - forceReturnValues parameter in 
the RemoteCacheManager.getCache() method is ignored!

In addition, we may as well have these "nice to have's" in as well:

https://issues.jboss.org/browse/ISPN-1787
https://issues.jboss.org/browse/ISPN-1793
https://issues.jboss.org/browse/ISPN-1795
https://issues.jboss.org/browse/ISPN-1789
https://issues.jboss.org/browse/ISPN-1784

What do you think?  Anything else you feel that is crucial for a 5.1.1?  I'd 
like to do this sooner rather than later, so we can still focus on 5.2.0.  So 
please respond asap.

Paul, I'd also like your thoughts on this from an AS7 perspective.

Cheers
Manik

--
Manik Surtani
[email protected]
twitter.com/maniksurtani

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



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