I filed an issue with a description and a suggested alternative.

On Wed, Dec 8, 2010 at 3:44 PM, Anthony Urso <anthonyu@cs.ucla.edu> wrote:

> Oh, thanks for the heads up on the race conditions.  I'd like to
> eliminate them all, so let me know specifics and I will work on them,
> or just send a patch if you see an obvious solution.
>
> Thanks for the feedback!
> Anthony
>
> On Wed, Dec 8, 2010 at 3:15 PM, Ted Dunning <ted.dunning@gmail.com> wrote:
> > This looks very useful and looks like nice work.
> >
> > I note that the methods used are prone to race conditions, but if you are
> > just thinking about shared maps, this probably isn't important.
> >
> > On Wed, Dec 8, 2010 at 12:40 PM, Anthony Urso <anthony.urso@gmail.com
> >wrote:
> >
> >> I am pleased to announce the initial release of KeptCollections, a
> >> library of drop-in replacements for standard Java Collections that use
> >> Apache ZooKeeper as a backing store.
> >>
> >> KeptCollections are designed to make it easy for anyone to write
> >> distributed applications without having to learn the intricacies of
> >> ZooKeeper, or distributed programming in general.
> >>
> >> The collections use the well-known JDK APIs, yet any changes made to
> >> any of these collections by one node are seen by all other nodes
> >> within milliseconds, allowing for easy communication between processes
> in a
> >> computing cluster.
> >>
> >> More information here:
> >>
> >> https://github.com/anthonyu/KeptCollections/wiki
> >>
> >> and all code is available from:
> >>
> >> https://github.com/anthonyu/KeptCollections
> >>
> >> Please try it out, and let me know any problems you experience via
> >> github issues or this email address.
> >>
> >> Cheers,
> >> Anthony
> >>
> >
>