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Posted to issues@lucene.apache.org by "David Smiley (Jira)" <ji...@apache.org> on 2020/06/22 00:00:00 UTC

[jira] [Resolved] (LUCENE-8965) ConcurrentMergeScheduler should maybe sometimes do synchronously

     [ https://issues.apache.org/jira/browse/LUCENE-8965?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

David Smiley resolved LUCENE-8965.
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    Resolution: Won't Fix

Obsoleted by LUCENE-8962

> ConcurrentMergeScheduler should maybe sometimes do synchronously
> ----------------------------------------------------------------
>
>                 Key: LUCENE-8965
>                 URL: https://issues.apache.org/jira/browse/LUCENE-8965
>             Project: Lucene - Core
>          Issue Type: Improvement
>          Components: core/index
>            Reporter: David Smiley
>            Assignee: David Smiley
>            Priority: Major
>          Time Spent: 1h 20m
>  Remaining Estimate: 0h
>
> It can be beneficial for the ConcurrentMergeScheduler to sometimes _not_ do concurrent merges (i.e. sometimes do a serial merge).  When the provided "OneMerge" is _small_ and when the MergeTrigger is FULL_FLUSH (i.e. on a commit), a new searcher would benefit from seeing fewer segments.  If index replication is used, this setting can reduce the net replication by merging a little more eagerly sometimes.



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