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https://issues.apache.org/jira/browse/LUCENE-2694?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Simon Willnauer updated LUCENE-2694:
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Attachment: LUCENE-2694.patch
Another iteration on this after LUCENE-2831 was committed last week.
- updated to trunk & all test pass
- re-added all ord() related stuff back to TermsEnum since I think we should
decouple this and solve it in a different issue. There is already enough
changes in here and discussions should be focused on making MTQ single pass.
- Changed IndexSearcher to run concurrent searches on a "leaf slice" rather
than on a leaf converted to a Top-Level Context. That made the callables a bit
simpler and is more consistent since the hierarchy is preserved.
- TermState is now referenced by leaf ordinal and asserted using the leaf's
top-level ctx.
- TermQuery is not single pass for all queries while state is only hold in
Weight unless PerReaderTermState as not set. But even then the top-level ctx
must be identical to the given IS's top-level ctx otherwise the give
PerReaderTermState is not used.
this one seems pretty close
> MTQ rewrite + weight/scorer init should be single pass
> ------------------------------------------------------
>
> Key: LUCENE-2694
> URL: https://issues.apache.org/jira/browse/LUCENE-2694
> Project: Lucene - Java
> Issue Type: Improvement
> Components: Search
> Reporter: Michael McCandless
> Assignee: Simon Willnauer
> Fix For: 4.0
>
> Attachments: LUCENE-2694-FTE.patch, LUCENE-2694.patch,
> LUCENE-2694.patch, LUCENE-2694.patch, LUCENE-2694.patch, LUCENE-2694.patch,
> LUCENE-2694.patch, LUCENE-2694.patch
>
>
> Spinoff of LUCENE-2690 (see the hacked patch on that issue)...
> Once we fix MTQ rewrite to be per-segment, we should take it further and make
> weight/scorer init also run in the same single pass as rewrite.
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