This is better asked on the Zookeeper lists. The first answer is that global atomic operations are a generally bad idea.
The second answer is that if you an batch these operations up then you can cut the evilness of global atomicity by a substantial factor. Are you sure you need a global counter? On Fri, Oct 26, 2012 at 11:07 PM, David Parks <davidpark...@yahoo.com>wrote: > How can we manage cluster-wide atomic operations? Such as maintaining an > auto-increment counter. > > Does Hadoop provide native support for these kinds of operations? > > An in case ultimate answer involves zookeeper, I'd love to work out doing > this in AWS/EMR. > >
