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https://issues.apache.org/jira/browse/LUCENE-5375?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13872006#comment-13872006
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Dr Oleg Savrasov commented on LUCENE-5375:
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Many thanks!
> ToChildBlockJoinQuery becomes crazy on wrong subquery
> -----------------------------------------------------
>
> Key: LUCENE-5375
> URL: https://issues.apache.org/jira/browse/LUCENE-5375
> Project: Lucene - Core
> Issue Type: Bug
> Components: modules/join
> Affects Versions: 4.6
> Reporter: Dr Oleg Savrasov
> Labels: patch
> Fix For: 5.0, 4.6.1
>
> Attachments: SOLR-5553-1.patch,
> SOLR-5553-insufficient_assertions.patch, SOLR-5553.patch
>
> Original Estimate: 24h
> Remaining Estimate: 24h
>
> If user supplies wrong subquery to ToParentBlockJoinQuery it reasonably
> throws IllegalStateException.
> (http://lucene.apache.org/core/4_0_0/join/org/apache/lucene/search/join/ToParentBlockJoinQuery.html
> 'The child documents must be orthogonal to the parent documents: the wrapped
> child query must never return a parent document.'). However
> ToChildBlockJoinQuery just goes crazy silently. I want to provide simple
> patch for ToChildBlockJoinQuery with if-throw clause and test.
> See
> http://mail-archives.apache.org/mod_mbox/lucene-solr-user/201311.mbox/%[email protected]%3E
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