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https://issues.apache.org/jira/browse/LUCENE-3495?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13122128#comment-13122128
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Michael McCandless commented on LUCENE-3495:
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+1 looks good!
> BlockJoinQuery doesn't implement boost
> --------------------------------------
>
> Key: LUCENE-3495
> URL: https://issues.apache.org/jira/browse/LUCENE-3495
> Project: Lucene - Java
> Issue Type: Bug
> Affects Versions: 3.4
> Reporter: Robert Muir
> Fix For: 3.5, 4.0
>
> Attachments: LUCENE-3495.patch
>
>
> After reviewing LUCENE-3494, i checked other queries and noticed that
> BlockJoinQuery currently throws UOE for getBoost and setBoost:
> {noformat}
> throw new UnsupportedOperationException("this query cannot support boosting;
> please use childQuery.setBoost instead");
> {noformat}
> I don't think we can safely do that in queries, because other parts of lucene
> rely upon this working... for example BQs rewrite when
> it has a single clause and erases itself.
> So I think we should just pass down the boost to the inner weight.
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