[jira] [Updated] (LUCENE-8675) Divide Segment Search Amongst Multiple Threads

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[jira] [Updated] (LUCENE-8675) Divide Segment Search Amongst Multiple Threads

JIRA jira@apache.org

     [ https://issues.apache.org/jira/browse/LUCENE-8675?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Atri Sharma updated LUCENE-8675:
    Attachment: TermHighFreqP90.png

> Divide Segment Search Amongst Multiple Threads
> ----------------------------------------------
>                 Key: LUCENE-8675
>                 URL: https://issues.apache.org/jira/browse/LUCENE-8675
>             Project: Lucene - Core
>          Issue Type: Improvement
>          Components: core/search
>            Reporter: Atri Sharma
>            Priority: Major
>         Attachments: PhraseHighFreqP50.png, PhraseHighFreqP90.png, TermHighFreqP50.png, TermHighFreqP90.png
> Segment search is a single threaded operation today, which can be a bottleneck for large analytical queries which index a lot of data and have complex queries which touch multiple segments (imagine a composite query with range query and filters on top). This ticket is for discussing the idea of splitting a single segment into multiple threads based on mutually exclusive document ID ranges.
> This will be a two phase effort, the first phase targeting queries returning all matching documents (collectors not terminating early). The second phase patch will introduce staged execution and will build on top of this patch.

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