If you are absolutely certain you won't be doing any lookups by term. The only use case I know of is internal, when Lucene's SegmentMerger is merging the segment with other segments. In this case, the merger does a linear iteration of all terms, and never a lookup by term, so we save CPU/RAM by not loading the terms index.
Mike On Fri, Nov 27, 2009 at 5:16 AM, Ganesh <emailg...@yahoo.co.in> wrote: > Thanks, > > May i know the purpose of using negative value? > > Regards > Ganesh > > ----- Original Message ----- > From: "Michael McCandless" <luc...@mikemccandless.com> > To: <java-user@lucene.apache.org> > Sent: Friday, November 27, 2009 3:17 PM > Subject: Re: IndexDivisor > > >> This is the expected behavior. >> >> If you intend to use the reader for searching, looking doc freq, >> deleting docs, etc, you must pass a non-negative value for >> indexDivisor. >> >> Mike >> >> On Fri, Nov 27, 2009 at 12:00 AM, Ganesh <emailg...@yahoo.co.in> wrote: >>> Hello all, >>> >>> I am using Lucene v2.9.1, If I open my reader with positive value for >>> termInfosIndexDivisor then the search works fine. If i set to -1, then >>> search throws exception "terms index was not loaded when this reader was >>> created". Is this the intend behaviour? >>> >>> I thought by setting this value to -1, No memory will be used and the terms >>> will be fetched from the disk. Search might be slow but with very less >>> memory consumption. >>> >>> Regards >>> Ganesh >>> Send instant messages to your online friends http://in.messenger.yahoo.com >>> >>> --------------------------------------------------------------------- >>> 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 >> > Send instant messages to your online friends http://in.messenger.yahoo.com > > --------------------------------------------------------------------- > 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
