I don't think you want to load indexes of this size into a RAMDirectory. The reasons have been listed multiple times here... in short, just use MMapDirectory.
On Wed, Oct 9, 2013 at 3:17 PM, Igor Shalyminov <ishalymi...@yandex-team.ru>wrote: > Hello! > > I need to perform an experiment of loading the entire index in RAM and > seeing how the search performance changes. > My index has TermVectors with payload and position info, StoredFields, and > DocValues. It takes ~30GB on disk (the server has 48). > > _indexDirectoryReader = DirectoryReader.open(RAMDirectory.open(new > File(_indexDirectory))); > > Is the line above the only thing I have to do to complete my goal? > > And also: > - will all the data be loaded in the RAM right after opening, or during > the reading stage? > - will the index data be stored in RAM as it is on disk, or will it be > uncompressed first? > > -- > Best Regards, > Igor > > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > For additional commands, e-mail: java-user-h...@lucene.apache.org > >
