Since I had to implement sorting in lucene 1.2 I had to write my own sorting using something similar to a lucene's contribution called SortField. Yesterday I did some tests, trying to use lucene 1.4 Sort objects and I realized that my old implementation works 40% faster then Lucene's implementation. My guess is that you are right and there is a problem with the cache although I couldn't find what that is yet.
Aviran -----Original Message----- From: Greg Gershman [mailto:[EMAIL PROTECTED] Sent: Wednesday, July 21, 2004 9:22 AM To: [EMAIL PROTECTED] Subject: Sort: 1.4-rc3 vs. 1.4-final When rc3 came out, I modified the classes used for Sorting to, in addition to Integer, Float and String-based sort keys, use Long values. All I did was add extra statements in 2 classes (SortField and FieldSortedHitQueue) that made a special case for longs, and created a LongSortedHitQueue identical to the IntegerSortedHitQueue, only using longs. This worked as expected; Long values converted to strings and stored in Field.Keyword type fields would be sorted according to Long order. The initial query would take a while, to build the sorted array, but subsequent queries would take little to no time at all. I went back to look at 1.4 final, and noticed the Sort implementation has changed quite a bit. I tried the same type of modifications to the existing source files, but was unable to achieve similiar results. Each subsequent query seems to take a significant amount of time, as if the Sorted array is being rebuilt each time. Also, I tried sorting on an Integer fields and got similar results, which leads me to believe there might be a caching problem somewhere. Has anyone else seen this in 1.4-final? Also, I would like it if Long sorted fields could become a part of the API; it makes sorting by date a breeze. Thanks! Greg Gershman __________________________________ Do you Yahoo!? New and Improved Yahoo! Mail - Send 10MB messages! http://promotions.yahoo.com/new_mail --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
