DrillDownQuery should rewrite to FilteredQuery? [LUCENE-4803]
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- Java
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Description
Today we rewrite to a query like +baseQuery +ConstantScoreQuery(boost=0.0 TermQuery(drillDownTerm)), but I'm not certain 0.0 boost is safe / doesn't actually change scores.
We should also add a test to assert that scores are not changed by drill down.
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Migrated from [LUCENE-4803](https://issues.apache.org/jira/browse/LUCENE-4803) by Michael McCandless (@mikemccand), updated May 09 2016
Contributor guide
Research direction
Start by locating DrillDownQuery's rewrite logic and the existing tests around it. Compare the current ConstantScoreQuery(boost=0.0) behavior with the proposed FilteredQuery approach, then add a test that verifies drill-down does not change scores. Done means the score-preservation behavior is covered by a passing test.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- java
- Domain
- search
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100