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https://issues.apache.org/jira/browse/LUCENE-1821?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12745044#action_12745044
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Mark Miller commented on LUCENE-1821:
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Looks great!
I still almost want to say rely on though:
bq. uses any caches/filters based on the top level IndexReader/Searcher
bq. uses any caches/filters that rely on being based on the top level
IndexReader/Searcher
No? It seems like you could be based on a top level reader before, but not rely
on the fact that it was a top level ...
> Weight.scorer() not passed doc offset for "sub reader"
> ------------------------------------------------------
>
> Key: LUCENE-1821
> URL: https://issues.apache.org/jira/browse/LUCENE-1821
> Project: Lucene - Java
> Issue Type: Bug
> Components: Search
> Affects Versions: 2.9
> Reporter: Tim Smith
> Attachments: LUCENE-1821.patch
>
>
> Now that searching is done on a per segment basis, there is no way for a
> Scorer to know the "actual" doc id for the document's it matches (only the
> relative doc offset into the segment)
> If using caches in your scorer that are based on the "entire" index (all
> segments), there is now no way to index into them properly from inside a
> Scorer because the scorer is not passed the needed offset to calculate the
> "real" docid
> suggest having Weight.scorer() method also take a integer for the doc offset
> Abstract Weight class should have a constructor that takes this offset as
> well as a method to get the offset
> All Weights that have "sub" weights must pass this offset down to created
> "sub" weights
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