add function queries for all index statistics [LUCENE-3427]
Open
affects-version:4.0-ALPHA
legacy-jira-priority:Major
type:enhancement
- Dominant language
- Java
- Stars
- 3.6k
- Forks
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- Avg merge
- 2d 11h
- Merged PRs (30d)
- 88
Description
I think we have most of them, but at least the following are missing:
- getDocCount (# of documents that contain a value for a field)
- sumDocFreq (# of postings for a field)
not sure if there are others that don't have function queries.
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Migrated from [LUCENE-3427](https://issues.apache.org/jira/browse/LUCENE-3427) by Robert Muir (@rmuir)
Contributor guide
Research direction
Start by inventorying the existing function queries and the index statistics they cover. Use getDocCount and sumDocFreq as initial entry points, then determine which other statistics lack function queries; done means the missing statistics have corresponding function queries.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- java
- Domain
- search
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 30/100