add NonBlockingHashMap and NonBlockingHashSet

[GoogleCodeExporter]

This is not a bug but a feature request. It would be nice if
NonBlockingHashMap and NonBlockingHashSet from high scale lib [1] would be
supported. These are drop in replacements for ConcurrentHashMap and
ConcurrentSkipListSet but with better scalability.

 [1] http://sourceforge.net/projects/high-scale-lib

Original issue reported on code.google.com by philippe...@gmail.com on 10 Apr 2009 at 1:19

[GoogleCodeExporter]

I've considered it, since it's public domain code.

However, after discussing it with Doug Lea, Martin Buchholz and Josh Bloch, we 
don't
have cause to believe this will actually be a win for 90% of users, and we 
agreed
that the code needs a lot of work to be production-worthy.

I don't want to be seen as denigrating Cliff's work; it's great research, but 
from
what I've gathered, its benefits primarily seem to manifest on the kind of 
hardware
that most of us don't have.

Original comment by kevin...@gmail.com on 10 Apr 2009 at 5:27

• Changed state: WontFix

[GoogleCodeExporter]

I'm not an expert, but the NonBlockingHashMap and NonBlockingHashSet seems to 
use
much less resources than ConcurrentHashMap and ConcurrentSkipListSet, so I 
believe
its a win for many users (those users with large data sets).

Original comment by ridersh...@gmail.com on 7 Aug 2009 at 9:09