DirectPostingsFormat? It stores all terms + postings as simple java arrays, uncompressed.
Mike McCandless http://blog.mikemccandless.com On Tue, Oct 8, 2013 at 5:45 PM, Benson Margulies <ben...@basistech.com> wrote: > Consider a Lucene index consisting of 10m documents with a total disk > footprint of 3G. Consider an application that treats this index as > read-only, and runs very complex queries over it. Queries with many terms, > some of them 'fuzzy' and 'should' terms and a dismax. And, finally, > consider doing all this on a box with over 100G of physical memory, some > cores, and nothing else to do with its time. > > I should probably just stop here and see what thoughts come back, but I'll > go out on a limb and type the word 'codec'. The MMapDirectory, of course, > cheerfully gets to keep every single bit in memory. And then each query > runs, exercising the the codec, building up a flurry of Java objects, all > of which turn into garbage and we start all over. So, I find myself > wondering, is there some sort of an opportunity for a codec-that-caches in > here? In other words, I'd like to sell some of my space to buy some time. --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
