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Posted to dev@lucene.apache.org by "Atri Sharma (JIRA)" <ji...@apache.org> on 2019/07/03 14:43:00 UTC

[jira] [Resolved] (LUCENE-8794) Cost Based Slice Allocation Algorithm

     [ https://issues.apache.org/jira/browse/LUCENE-8794?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Atri Sharma resolved LUCENE-8794.
---------------------------------
    Resolution: Fixed

Merged to master

> Cost Based Slice Allocation Algorithm
> -------------------------------------
>
>                 Key: LUCENE-8794
>                 URL: https://issues.apache.org/jira/browse/LUCENE-8794
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Atri Sharma
>            Priority: Major
>
> In https://issues.apache.org/jira/browse/LUCENE-8757, the idea of a cost based and dynamically adjusting slice allocation algorithm was conceived. We should ideally have a hard cap on the number of threads that can be consumed by a single query, and have static cost factors associated with segments and assign them to threads in a fair manner. We will also need to ensure that we end up not assigning individual threads to small segments, or making more thread s that needed (thread context switching could outweight benefits).



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