Harshvardhan, There almost nothing like this in bare Lucene, the closest analogy is http://wiki.apache.org/solr/SolrCaching#documentCache
On Thu, Feb 13, 2014 at 1:46 PM, Harshvardhan Ojha < ojha.harshvard...@gmail.com> wrote: > Hi Mikhail, > > Thanks for sharing this nice link. I am pretty comfortable with searching > of lucene and this is very beginner level question on storage, mainly > Hashing part(storage and retrieval). > Which DS(I don't know currently), is being used to keep and again calculate > that hash to get document back? > > Lets me put it very clearly, > If I know document to search id:1, and there is no other query, after > knowing this much about doc, there should ideally be no searching at > all(although it was indexed), its only fast retrieval. > > Let me know, If you want me to clarify question. > > Regards > Harshvardhan Ojha > > > On Thu, Feb 13, 2014 at 2:53 PM, Mikhail Khludnev < > mkhlud...@griddynamics.com> wrote: > > > Hello > > > > I think you can start from > > http://www.lucenerevolution.org/2013/What-is-in-a-lucene-index > > > > > > > > On Thu, Feb 13, 2014 at 12:56 PM, Harshvardhan Ojha < > > ojha.harshvard...@gmail.com> wrote: > > > > > Hi All, > > > > > > I have a question regarding retrieval of documents by lucene. > > > I know lucene uses many files on disk to keep documents, each > comprising > > > fields in it, and uses many IR algorithms, and inverted index to match > > > documents. > > > > > > My question is : > > > 1. How lucene stores these documents inside file system and gets it so > > > fast? > > > 2. Does lucene uses any Hashing algorithm to get docs in O(1) ? If not > > > which DS is used by lucene ? > > > 3. Except id provided by us at the time of indexing, is there any other > > > unique identifier which is assigned by lucene to its documents ? > > > > > > I will appreciate If someone can provide me with source file names to > > study > > > these algorithms in detail. > > > > > > Regards > > > Harshvardhan Ojha > > > > > > > > > > > -- > > Sincerely yours > > Mikhail Khludnev > > Principal Engineer, > > Grid Dynamics > > > > <http://www.griddynamics.com> > > <mkhlud...@griddynamics.com> > > > -- Sincerely yours Mikhail Khludnev Principal Engineer, Grid Dynamics <http://www.griddynamics.com> <mkhlud...@griddynamics.com>
