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https://issues.apache.org/jira/browse/LUCENE-2454?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12888908#action_12888908
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Mark Harwood commented on LUCENE-2454:
--------------------------------------

The 2nd comment above talks about this and the need for Lucene to offer more 
control over flush policy.

bq.it only matches the the parent document acurately for the 1st segment. I 
think this is due to the way the parent docs are marked using a bit array for 
the ENTIRE index

But aren't filters held and evaluated the within the context of each sub 
reader? Are you sure the issue isn't limited to a parent/child combo that is 
split across segments? 

> Nested Document query support
> -----------------------------
>
>                 Key: LUCENE-2454
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2454
>             Project: Lucene - Java
>          Issue Type: New Feature
>          Components: Search
>    Affects Versions: 3.0.2
>            Reporter: Mark Harwood
>            Assignee: Mark Harwood
>            Priority: Minor
>         Attachments: LuceneNestedDocumentSupport-1.zip
>
>
> A facility for querying nested documents in a Lucene index as outlined in 
> http://www.slideshare.net/MarkHarwood/proposal-for-nested-document-support-in-lucene

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