[jira] [Updated] (LUCENE-6880) Add document oriented collector for NRTSuggester

["Uwe Schindler (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LUCENE-6880?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Uwe Schindler updated LUCENE-6880:
----------------------------------
    Fix Version/s:     (was: 5.4)
                   5.5

> 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: 5.5, Trunk
>
>         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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