[jira] [Updated] (LUCENE-7588) A parallel DrillSideways implementation

["Emmanuel Keller (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LUCENE-7588?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Emmanuel Keller updated LUCENE-7588:
------------------------------------
    Labels: facet faceting  (was: )

> A parallel DrillSideways implementation
> ---------------------------------------
>
>                 Key: LUCENE-7588
>                 URL: https://issues.apache.org/jira/browse/LUCENE-7588
>             Project: Lucene - Core
>          Issue Type: Improvement
>    Affects Versions: master (7.0), 6.3.1
>            Reporter: Emmanuel Keller
>            Priority: Minor
>              Labels: facet, faceting
>             Fix For: master (7.0), 6.3.1
>
>
> Currently DrillSideways implementation is based on the single threaded IndexSearcher.search(Query query, Collector results).
> On large document set, the single threaded collection can be really slow.
> The ParallelDrillSideways implementation could:
> 1. Use the CollectionManager based method IndexSearcher.search(Query query, CollectorManager collectorManager)  to get the benefits of multithreading on index segments,
> 2. Compute each DrillSideway subquery on a single thread.



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