[jira] [Resolved] (LUCENE-4968) Several ToParentBlockJoinQuery/Collector issues

["Michael McCandless (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LUCENE-4968?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael McCandless resolved LUCENE-4968.
----------------------------------------

    Resolution: Fixed
    
> Several ToParentBlockJoinQuery/Collector issues
> -----------------------------------------------
>
>                 Key: LUCENE-4968
>                 URL: https://issues.apache.org/jira/browse/LUCENE-4968
>             Project: Lucene - Core
>          Issue Type: Bug
>          Components: modules/join
>            Reporter: Michael McCandless
>            Assignee: Michael McCandless
>             Fix For: 5.0, 4.4
>
>         Attachments: LUCENE-4968.patch
>
>
> I hit several issues with ToParentBlockJoinQuery/Collector:
>   * If a given Query sometimes has no child matches then we could hit
>     AIOOBE, but should just get 0 children for that parent
>   * TPBJC.getTopGroups incorrectly throws IllegalArgumentException
>     when the child query happens to have no matches
>   * We have checks that user didn't accidentally pass a child query
>     that matches parent docs ... they are only assertions today but I
>     think they should be real checks since it's easy to screw up

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