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https://issues.apache.org/jira/browse/LUCENE-6880?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Areek Zillur updated LUCENE-6880:
---------------------------------
Attachment: LUCENE-6880.patch
Initial patch:
- adds a document-oriented collector: TopSuggestionDocumentsCollector w/ tests
- adds TopSuggestsCollector collector to collect docs if docId deduplication
is acceptable
> Add document oriented collector for NRTSuggester
> ------------------------------------------------
>
> Key: LUCENE-6880
> URL: https://issues.apache.org/jira/browse/LUCENE-6880
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Areek Zillur
> Assignee: Areek Zillur
> Fix For: Trunk, 5.4
>
> Attachments: LUCENE-6880.patch
>
>
> Currently NRTSuggester collects completions iteratively as they are accepted
> by the TopNSearcher, implying that a document can be collected more than
> once. In case of indexing a completion with multiple context values, the
> completion leads to {{num_context}} paths in the underlying FST for the same
> docId and gets collected {{num_context}} times, when a query matches all its
> contexts.
> Ideally, a document-oriented collector will collect top N documents instead
> of top N completions by handling the docId deduplication while collecting the
> completions. This could be used to collect n unique documents that matched a
> completion query.
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