[ http://issues.apache.org/jira/browse/LUCENE-456?page=comments#action_12332478 ]
Luc Vanlerberghe commented on LUCENE-456: ----------------------------------------- I applied the three patches as well and I also don't see any anomalies any more. Perhaps the fact that there is a 'hidden' ultimate sorting key (based on the internal document number) for equal documents should be mentioned somewhere in the the documentation. It's the most logical solution to make the sort stable without sacrificing speed. If I understand correctly, that already existed for standalone IndexSearchers, but was 'forgotten' for (Parallel-)MultiSearchers. > Duplicate hits and missing hits in sorted search > ------------------------------------------------ > > Key: LUCENE-456 > URL: http://issues.apache.org/jira/browse/LUCENE-456 > Project: Lucene - Java > Type: Bug > Components: Search > Versions: 1.4 > Environment: JDK 1.4.2_06, probably OS independant, testet on Solaris 8 and > Win2000 > Reporter: Martin Seitz > Priority: Minor > Attachments: FieldDocSortedHitQueue_dups.txt, > TestCustomSearcherSort_1_4_3.java, TestCustomSearcherSort_HEAD.java > > If using a searcher that subclasses from IndexSearcher I get different result > sets (besides the ordering of course). The problem only occurrs if the > searcher is wrapped by (Parallel)MultiSearcher and the index is not too > small. The number of hits returned by un unsorted and a sorted search are > identical but the hits are referencing different documents. A closer look at > the result sets revealed that the sorted search returns duplicate hits. > I created test cases for Lucene 1.4.3 as well as for the head release. The > problem showed up for both, the number of duplicates beeing bigger for the > head realease. The test cases are written for package > org.apache.lucene.search. There are messages describing the problem written > to the console. In order to see all those hints the asserts are commented > out. So dont't be confused if junit reports no errors. (Sorry, beeing a > novice user of the bug tracker I don't see any means to attach the test cases > on this screen. Let's see.) -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://issues.apache.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
