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https://issues.apache.org/jira/browse/LUCENE-4236?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Muir updated LUCENE-4236:
--------------------------------
Attachment: LUCENE-4236.patch
Updated patch... I tried to speed up BS2 some more here in this patch:
{noformat}
Task QPS trunkStdDev trunk QPS patchStdDev patch Pct
diff
Respell 76.69 1.75 74.06 1.36 -7% -
0%
AndHighMed 89.69 1.85 86.70 2.83 -8% -
1%
SpanNear 2.75 0.09 2.70 0.07 -7% -
4%
Fuzzy2 34.94 0.66 34.46 0.54 -4% -
2%
Fuzzy1 115.28 2.24 113.81 1.59 -4% -
2%
AndHighHigh 12.97 0.27 12.84 0.34 -5% -
3%
TermBGroup1M 47.87 0.27 47.42 0.51 -2% -
0%
TermBGroup1M1P 53.84 1.08 53.35 0.81 -4% -
2%
TermGroup1M 42.55 0.51 42.36 0.56 -2% -
2%
PKLookup 298.51 0.80 297.81 2.68 -1% -
0%
Wildcard 20.66 1.13 20.75 1.09 -9% -
11%
Phrase 6.64 0.26 6.67 0.31 -7% -
9%
Prefix3 32.82 1.69 33.07 1.72 -9% -
11%
SloppyPhrase 26.12 0.38 26.46 0.42 -1% -
4%
IntNRQ 11.24 1.55 11.39 1.38 -21% -
31%
Term 138.34 0.93 141.27 8.71 -4% -
9%
OrHighHigh 7.28 0.38 7.71 0.50 -5% -
19%
OrHighMed 20.29 1.21 21.81 1.61 -6% -
22%
{noformat}
It could use some code comments and cleanup but its time for a break :)
> clean up booleanquery conjunction optimizations a bit
> -----------------------------------------------------
>
> Key: LUCENE-4236
> URL: https://issues.apache.org/jira/browse/LUCENE-4236
> Project: Lucene - Java
> Issue Type: Improvement
> Reporter: Robert Muir
> Fix For: 4.0, 5.0
>
> Attachments: LUCENE-4236.patch, LUCENE-4236.patch, LUCENE-4236.patch,
> LUCENE-4236.patch
>
>
> After LUCENE-3505, I want to do a slight cleanup:
> * compute the term conjunctions optimization in scorer(), so its applied even
> if we have optional and prohibited clauses that dont exist in the segment
> (e.g. return null)
> * use the term conjunctions optimization when optional.size() ==
> minShouldMatch, as that means they are all mandatory, too.
> * don't return booleanscorer1 when optional.size() == minShouldMatch, because
> it means we have required clauses and in general BS2 should do a much better
> job (e.g. use advance).
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