Read this, then you will see that MMapDirectory will use 0% of your Java Heap space or free system RAM:
http://blog.thetaphi.de/2012/07/use-lucenes-mmapdirectory-on-64bit.html Uwe ----- Uwe Schindler H.-H.-Meier-Allee 63, D-28213 Bremen http://www.thetaphi.de eMail: u...@thetaphi.de > -----Original Message----- > From: William Bell [mailto:billnb...@gmail.com] > Sent: Tuesday, July 17, 2012 6:05 AM > Subject: How to setup SimpleFSDirectoryFactory > > We all know that MMapDirectory is fastest. However we cannot always use it > since you might run out of memory on large indexes right? > > Here is how I got iSimpleFSDirectoryFactory to work. Just set - > Dsolr.directoryFactory=solr.SimpleFSDirectoryFactory. > > Your solrconfig.xml: > > <directoryFactory name="DirectoryFactory" > class="${solr.directoryFactory:solr.StandardDirectoryFactory}"/> > > You can check it with http://localhost:8983/solr/admin/stats.jsp > > Notice that the default for Windows 64bit is MMapDirectory. Else > NIOFSDirectory except for WIndows.... It would be nicer if we just set it all > up > with a helper in solrconfig.xml... > > if (Constants.WINDOWS) { > if (MMapDirectory.UNMAP_SUPPORTED && Constants.JRE_IS_64BIT) > return new MMapDirectory(path, lockFactory); > else > return new SimpleFSDirectory(path, lockFactory); > } else { > return new NIOFSDirectory(path, lockFactory); > } > } > > > > -- > Bill Bell > billnb...@gmail.com > cell 720-256-8076
