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https://issues.apache.org/jira/browse/LUCENE-7206?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15238963#comment-15238963
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Martijn van Groningen commented on LUCENE-7206:
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+1 I think including the first child explain makes sense. Perhaps instead of
'child docid x to y' matches, we can just include the number of child docs
matched (total_matches)?
> nest child query explain into
> ToParentBlockJoinQuery.BlockJoinScorer.explain(int)
> ---------------------------------------------------------------------------------
>
> Key: LUCENE-7206
> URL: https://issues.apache.org/jira/browse/LUCENE-7206
> Project: Lucene - Core
> Issue Type: Improvement
> Components: core/query/scoring
> Affects Versions: 6.0
> Reporter: Mikhail Khludnev
> Labels: newbie, newdev
>
> Now to parent query match is explained with {{Score based on child doc range
> from .. to .. }} that's quite useless.
> It's proposed to nest child query match explanation from the first matching
> child document into parent explain.
> WDYT?
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