Hi, a quick alternative is to get the underlying reader from IndexSearcher. You just don't use the IndexSearcher provided by SearcherManager, you just use it to access the underlying Index-/DirectoryReader, that you can feed into new MultiReaders. The good thing with that is:
- Every index has its own searcher manager and can therefor update itsself separately - The search logic, just fetches the IndexSearcher from every searchermanager that it is interested in, but instead of using the IndexSearchers directly, just ignore them and fetch the underlying IndexReader: IndexSearcher#getIndexReader There is no overhead inbvolved, as IndexSearcher is just a "cheap wrapper" around IndexReader. If you don't use it, don't care. Uwe ----- Uwe Schindler H.-H.-Meier-Allee 63, D-28213 Bremen http://www.thetaphi.de eMail: u...@thetaphi.de > -----Original Message----- > From: Vladimir Kotal [mailto:vladimir.ko...@oracle.com] > Sent: Thursday, July 21, 2016 7:34 PM > To: java-user@lucene.apache.org > Subject: Re: MmapDirectory and IndexReader reuse > > On 07/18/16 05:52 PM, Uwe Schindler wrote: > > Hi, > > > > Have a separate searcher manager for every directory. On every incoming > search request, fetch the actual DirectoryReaders from the searcher > managers and build a MultiReader from it. This costs nothing, as MultiReader > is just a thin wrapper where no caching is involved. On top of this > MultiReader create an IndexSearcher (which is also cheap). > > SearcherManeger's acquire() returns IndexSearcher. The trouble is that > we need to have the IndexSearcher constructed with certain > ExecutorService and there does not seem to be a way how to do that with > SearcherManager. > > I wonder if SearcherManager can be extended to allow this. Otherwise we > would have to use ReferenceManager and reimplement the functionality > found in SearcherManager which I'd like to avoid. > > > v. > > --------------------------------------------------------------------- > 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
