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https://issues.apache.org/jira/browse/LUCENE-7452?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15510875#comment-15510875
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Mikhail Khludnev edited comment on LUCENE-7452 at 9/21/16 7:12 PM:
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What about this? 
{panel}
java.lang.IllegalStateException: Child query must not match same docs with 
parent filter. Combine them as must clauses \(+) to find a problem doc. 
docId=23, class org.apache.lucene.search.DisjunctionSumScorer
{panel}

{panel}
java.lang.IllegalStateException: Parent query must not match any docs beside 
parent filter. Combine them as must \(+) and must-not \(-) clauses to find a 
problem doc. docID=12
{panel}



was (Author: mkhludnev):
What about this? 
{panel}
java.lang.IllegalStateException: Child query must not match same docs with 
parent filter. Combine them as must clauses (+) to find a problem doc. 
docId=23, class org.apache.lucene.search.DisjunctionSumScorer
{panel}

{panel}
java.lang.IllegalStateException: Parent query must not match any docs beside 
parent filter. Combine them as must (+) and must-not (-) clauses to find a 
problem doc. docID=12
{panel}


> improve exception message: child query must only match non-parent docs, but 
> parent docID=180314...
> --------------------------------------------------------------------------------------------------
>
>                 Key: LUCENE-7452
>                 URL: https://issues.apache.org/jira/browse/LUCENE-7452
>             Project: Lucene - Core
>          Issue Type: Improvement
>          Components: core/search
>    Affects Versions: 6.2
>            Reporter: Mikhail Khludnev
>            Priority: Minor
>         Attachments: LUCENE-7452.patch
>
>
> when parent filter intersects with child query the exception exposes internal 
> details: docnum and scorer class. I propose an exception message to suggest 
> to execute a query intersecting them both. There is an opinion to add this  
> suggestion in addition to existing details. 
> My main concern against is, when index is constantly updated even SOLR-9582 
> allows to search for docnum it would be like catching the wind, also think 
> about cloud case. But, user advised with executing query intersection can 
> catch problem documents even if they occurs sporadically.  



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