thanks for uwe's answer.
-- gang liu email: liuga...@gmail.com At 2011-11-20 17:44:06,"Uwe Schindler" <u...@thetaphi.de> wrote: >Hi, > >Lucene only uses CFS for very small segments, that don't exceed a specific >percentage of the index size. See the method LogMergePolicy.setNoCFSRatio >[http://lucene.apache.org/java/3_4_0/api/all/org/apache/lucene/index/LogMerg >ePolicy.html#setNoCFSRatio(double)]. > >The default is 10%, every segment larger than 0.1 of total index size will >not be made compound: >[http://lucene.apache.org/java/3_4_0/api/all/org/apache/lucene/index/LogMerg >ePolicy.html#DEFAULT_NO_CFS_RATIO] > >In general for merge performance reason you should not change those values, >unless you are running out of file descriptors! If you have a static index >that never changes (e.g. that will be hosted on a CD-ROM), you can >forceMerge(1) it to one single segment with CFSRatio=1.0, in all other cases >it's not a good idea, especially if you do realtime indexing; in that case >you should use the new TieredMergePolicy not the old LogMergePolicy. > >Uwe > >----- >Uwe Schindler >H.-H.-Meier-Allee 63, D-28213 Bremen >http://www.thetaphi.de >eMail: u...@thetaphi.de > > >> -----Original Message----- >> From: liugang [mailto:liuga...@gmail.com] >> Sent: Sunday, November 20, 2011 5:30 AM >> To: java-user@lucene.apache.org >> Subject: Compound file don't work with lucene 3.3 or 3.4 >> >> I use lucene 3.4 in my search app. in default config, after indexing, my >index >> dir has several file such as *.tii, *.tis ..., and cfs file doesn't exist. >> >> Then I use setUseCompoundFile(true) of logByteSizeMergePolicy, and result >is >> same. >> >> I remember it's good with lucene 2.x. has anybody same problem? >Appreciate >> for any response. >> >> 发自我的 iPad >> --------------------------------------------------------------------- >> 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 >
