I made the same experiment and got same result. Then I used per-field codec with DiskDocValuesFormat, it works like DirectSource in 4.0.0, but I'm not feeling confident with this usage. Anyone can say more about removing DirectSource API?
On 2013-3-26, at 22:59, Peter Keegan <peterlkee...@gmail.com> wrote: > Inspired by this presentation of DocValues: > http://www.slideshare.net/lucenerevolution/willnauer-simon-doc-values-column-stride-fields-in-lucene > I decided to try them out in 4.2. I created a 1M document index with one > DocValues field: > > BinaryDocValuesField conceptsDV = new BinaryDocValuesField("concepts",new > BytesRef(byteArray(4000))); > d.add(conceptsDV); > writer.addDocument(d); > > I searched the index and fetched the DocValues field: > > TopDocs docs = searcher.search(new TermQuery(new Term("guid", val)), 1); > int docId = docs.scoreDocs[0].doc; > BinaryDocValues conceptValues = > MultiDocValues.getBinaryValues(r,"concepts"); > BytesRef result = new BytesRef(); > conceptValues.get(docId,result); > > However, the first call to MultiDocValues.getBinaryValues reads in the > values for the entire index: > > Lucene42DocValuesProducer.loadBinary // loads DocValues for entire index > > My hope was to take advantage of faster disk access than stored fields and > less RAM than FieldCache, but this is using too much memory. Are my > assumptions and my usage correct? > > Thanks, > Peter --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
