zacharymorn opened a new pull request #418:
URL: https://github.com/apache/lucene/pull/418
# Description
This PR is WIP for implementing basic dynamic pruning support for
CombinedFieldsQuery
# Tests
Added a test to compare performance between top_score (with pruning) and
complete scoring, and verify top 100 results match between the two. Here are
the results:
Query:
```
CombinedFieldQuery query =
new CombinedFieldQuery.Builder()
.addField("title", (float) 4.0)
.addField("body", (float) 2.0)
.addTerm(new BytesRef(termA))
.addTerm(new BytesRef(termB))
.build();
```
Results:
```
HighMed: from office # freq=3224339 freq=225338
top scores time usage 425 milliseconds
complete time usage 401 milliseconds
HighHigh: but publisher # freq=1456553 freq=1289029
top scores time usage 469 milliseconds
complete time usage 322 milliseconds
HighLow: with fung # freq=3709421 freq=1344
top scores time usage 241 milliseconds
complete time usage 428 milliseconds
HighLow: date insult # freq=2020626 freq=4424
top scores time usage 171 milliseconds
complete time usage 225 milliseconds
```
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