[jira] [Updated] (LUCENE-2840) Multi-Threading in IndexSearcher (after removal of MultiSearcher and ParallelMultiSearcher)

["David Smiley (JIRA)" <ji...@apache.org>]

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

David Smiley updated LUCENE-2840:
---------------------------------

    Fix Version/s:     (was: 4.7)
                   4.8

> 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: 4.8
>
>
> 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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