lucene-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Uwe Schindler (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (LUCENE-3054) SorterTemplate.quickSort stack overflows on broken comparators that produce only few disticnt values in large arrays
Date Mon, 02 May 2011 15:05:03 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-3054?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Uwe Schindler updated LUCENE-3054:
----------------------------------

    Attachment: LUCENE-3054.patch

Better test that fails faster in case of quickSort bug

> SorterTemplate.quickSort stack overflows on broken comparators that produce only few
disticnt values in large arrays
> --------------------------------------------------------------------------------------------------------------------
>
>                 Key: LUCENE-3054
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3054
>             Project: Lucene - Java
>          Issue Type: Task
>    Affects Versions: 3.1
>            Reporter: Robert Muir
>            Assignee: Uwe Schindler
>            Priority: Critical
>             Fix For: 3.1.1, 3.2, 4.0
>
>         Attachments: LUCENE-3054-stackoverflow.patch, LUCENE-3054.patch, LUCENE-3054.patch,
LUCENE-3054.patch, LUCENE-3054.patch, 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.

--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira

---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscribe@lucene.apache.org
For additional commands, e-mail: dev-help@lucene.apache.org


Mime
View raw message