There is a decent implementation for a fully in-memory Directory in the Infinispan project: https://github.com/infinispan/infinispan/tree/master/lucene
This is however not taking advantage of off-heap buffers but storing the index in the heap itself; the reason being that Infinispan can in this case deal with index replication over the network. While I am one of the maintainers of the above code, I would agree on preferring the MMap implementation over the Infinispan one if you are interested in a single node only for the sake of simplicity: Infinispan's implementation is not (yet) significantly faster than FSDirectory, at least in most of my tests, although it wins by a small margin in some tests; GC is indeed the bottleneck, but we hope to improve on that. Sanne On 4 July 2013 22:59, Adrien Grand <jpou...@gmail.com> wrote: > On Tue, Jul 2, 2013 at 10:09 AM, Toke Eskildsen <t...@statsbiblioteket.dk> > wrote: >> I wonder if Java's ByteBuffer could be used to make a more GC-friendly >> RAMDirectory? > > For the record, there is an open issue about it: > https://issues.apache.org/jira/browse/LUCENE-2292. > > -- > Adrien > > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > For additional commands, e-mail: java-user-h...@lucene.apache.org > --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
