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https://issues.apache.org/jira/browse/LUCENE-1178?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12600440#action_12600440
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Mark Miller commented on LUCENE-1178:
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Id still like to see an answer if anyone knows. From what I can tell, this is
also the only place that the similarity from the multi searcher is used.
Does that mean that MultiSearcher.setSimilarity has no real effect?
> Hits does not use MultiSearcher's createWeight
> ----------------------------------------------
>
> Key: LUCENE-1178
> URL: https://issues.apache.org/jira/browse/LUCENE-1178
> Project: Lucene - Java
> Issue Type: Bug
> Components: Search
> Affects Versions: 2.3
> Reporter: Israel Tsadok
> Attachments: hits.diff
>
>
> I am developing a distributed index, using MultiSearcher and RemoteSearcher.
> When investigating some performance issues, I noticed that there is a lot of
> back-and-forth traffic between the servers during the weight calculation.
> Although MultiSearcher has a method called createWeight that minimizes the
> calls to the sub-searchers, this method never actually gets called when I
> call search(query).
> From what I can tell, this is fixable by changing in Hits.java the line:
> weight = q.weight(s);
> to:
> weight = s.createWeight(q);
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