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Posted to dev@lucene.apache.org by "Atri Sharma (JIRA)" <ji...@apache.org> on 2019/05/06 17:53:00 UTC

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

Atri Sharma created LUCENE-8794:
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             Summary: 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


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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