Thanks. I use this field for Rangequery and sort. I think it is best to use Int to gain some heap.
Regards Ganesh ----- Original Message ----- From: "Uwe Schindler" <u...@thetaphi.de> To: <java-user@lucene.apache.org> Sent: Tuesday, February 28, 2012 5:08 PM Subject: [Bulk] RE: RE: Date time as String or Numeric field > Hi, > > The long or int size mostly only affects the size of e.g. FieldCache during > sorting (which doubles its size). The term dictionary's size depends on the > number of unique terms and that does not really change by the data type. The > size of the values is of minor importance because how the data is encoded on > disk. > > Uwe > > ----- > Uwe Schindler > H.-H.-Meier-Allee 63, D-28213 Bremen > http://www.thetaphi.de > eMail: u...@thetaphi.de > > >> -----Original Message----- >> From: Ganesh [mailto:emailg...@yahoo.co.in] >> Sent: Tuesday, February 28, 2012 12:17 PM >> To: java-user@lucene.apache.org >> Subject: Re: RE: Date time as String or Numeric field >> >> I tried NumericField with Integer value and Long value. There is no > difference >> in space and heap utilization. Will it be? Are both are same? >> >> Regards >> Ganesh >> >> ----- Original Message ----- >> From: "Uwe Schindler" <u...@thetaphi.de> >> To: <java-user@lucene.apache.org> >> Sent: Tuesday, February 28, 2012 3:52 PM >> Subject: [Bulk] RE: Date time as String or Numeric field >> >> >> > Hi, >> > >> > NumericField takes more space on disk and (possibly more heap because >> term >> > dictionary is larger), but is much faster on RANGE searches >> > (NumericRangeQuery). Depending on index size this can be hundreds of > times >> > faster. >> > >> > If you don't want to do numeric searches (like range from...to) but only >> > sort against the numeric field, use precisionStep=Integer.MAX_VALUE, > then it >> > takes even less space on disk or heap. The additional disk space is > needed >> > for optimizing range searches (which is wanted in most cases). If you > use >> > the infinite precision step, each numeric value only generates one > token, >> > but search with NumericRangeQuery is then as slow as a TermRangeQuery. >> > >> > Uwe >> > >> > ----- >> > Uwe Schindler >> > H.-H.-Meier-Allee 63, D-28213 Bremen >> > http://www.thetaphi.de >> > eMail: u...@thetaphi.de >> > >> > >> >> -----Original Message----- >> >> From: Ganesh [mailto:emailg...@yahoo.co.in] >> >> Sent: Tuesday, February 28, 2012 11:15 AM >> >> To: java-user@lucene.apache.org >> >> Subject: Date time as String or Numeric field >> >> >> >> Hello all, >> >> >> >> I was using DateTime as String and now i am using NumericField. Using >> >> NumericField takes more heap and storage space then the earlier String >> >> version. Is it good to move to NumericField or stick with String. I am >> > using this >> >> field for search and sort. >> >> >> >> Regards >> >> Ganesh >> >> >> >> --------------------------------------------------------------------- >> >> 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 >> > >> >> --------------------------------------------------------------------- >> 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 > --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
