apache / apache/lucene

PagingFieldCollector should track previous page hits [LUCENE-5380]

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legacy-jira-priority:Minor module:core/search type:enhancement
Dominant language
Java
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Avg merge
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Description

PagingFieldCollector partitions all hits into three buckets: previous page hits, collected (current page) hits, and non-competitive (following page) hits. Total hits and collected hits are tracked, but neither non-competitive hits nor previous page hits are tracked, so previous page hits can't be derived from the total and collected hits.

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Migrated from [LUCENE-5380](https://issues.apache.org/jira/browse/LUCENE-5380) by Steven Rowe (@sarowe), 1 vote, updated Jan 16 2015
Attachments: [LUCENE-5380.patch](https://apache.github.io/lucene-jira-archive/attachments/LUCENE-5380/LUCENE-5380.patch)
Linked issues:
- [SOLR-5463](https://issues.apache.org/jira/browse/SOLR-5463)
- [SOLR-6635](https://issues.apache.org/jira/browse/SOLR-6635)

Contributor guide

Open the contributing guide

Research direction

Start by locating PagingFieldCollector and reading how it currently tracks total and collected hits. Inspect nearby tests or callers for the collector’s paging behavior, then add tracking for previous-page hits and verify that the value can be derived or exposed as requested.

Written by the indexing model from the issue text.

Assessment

Tech stack
java
Domain
search
Issue type
Feature
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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