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From "Uwe Schindler (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (LUCENE-2840) Multi-Threading in IndexSearcher (after removal of MultiSearcher and ParallelMultiSearcher)
Date Thu, 09 May 2013 23:05:59 GMT

     [ https://issues.apache.org/jira/browse/LUCENE-2840?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Uwe Schindler updated LUCENE-2840:
----------------------------------

    Fix Version/s:     (was: 4.3)
                   4.4
    
> Multi-Threading in IndexSearcher (after removal of MultiSearcher and ParallelMultiSearcher)
> -------------------------------------------------------------------------------------------
>
>                 Key: LUCENE-2840
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2840
>             Project: Lucene - Core
>          Issue Type: Sub-task
>          Components: core/search
>            Reporter: Uwe Schindler
>            Priority: Minor
>             Fix For: 4.4
>
>
> Spin-off from parent issue:
> {quote}
> We should discuss about how many threads should be spawned. If you have an index with
many segments, even small ones, I think only the larger segments should be separate threads,
all others should be handled sequentially. So maybe add a maxThreads cound, then sort the
IndexReaders by maxDoc and then only spawn maxThreads-1 threads for the bigger readers and
then one additional thread for the rest?
> {quote}

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