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Posted to dev@lucene.apache.org by "Robert Muir (JIRA)" <ji...@apache.org> on 2011/04/29 19:47:04 UTC
[jira] [Updated] (LUCENE-3054) add assert to sorts catch broken
comparators in tests
[ https://issues.apache.org/jira/browse/LUCENE-3054?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Robert Muir updated LUCENE-3054:
--------------------------------
Attachment: LUCENE-3054.patch
really ugly prototype... i expect the generics/sort policeman will want to jump in here anyway :)
but it does catch that problem:
{noformat}
[junit] Testsuite: org.apache.lucene.index.TestCodecs
[junit] Testcase: testSepPositionAfterMerge(org.apache.lucene.index.TestCodecs): FAILED
[junit] insane comparator for: org.apache.lucene.search.PhraseQuery$PostingsAndFreq
{noformat}
> add assert to sorts catch broken comparators in tests
> -----------------------------------------------------
>
> Key: LUCENE-3054
> URL: https://issues.apache.org/jira/browse/LUCENE-3054
> Project: Lucene - Java
> Issue Type: Task
> Reporter: Robert Muir
> Attachments: LUCENE-3054.patch
>
>
> Looking at Otis's sort problem on the mailing list, he said:
> {noformat}
> * looked for other places where this call is made - found it in
> MultiPhraseQuery$MultiPhraseWeight and changed that call from
> ArrayUtil.quickSort to ArrayUtil.mergeSort
> * now we no longer see SorterTemplate.quickSort in deep recursion when we do a
> thread dump
> {noformat}
> I thought this was interesting because PostingsAndFreq's comparator
> looks like it needs a tiebreaker.
> I think in our sorts we should add some asserts to try to catch some of these broken comparators.
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