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Posted to dev@lucene.apache.org by "Michael McCandless (JIRA)" <ji...@apache.org> on 2009/11/14 12:23:39 UTC
[jira] Resolved: (LUCENE-2060) CMS should default its
maxThreadCount to 1 (not 3)
[ https://issues.apache.org/jira/browse/LUCENE-2060?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Michael McCandless resolved LUCENE-2060.
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Resolution: Fixed
> CMS should default its maxThreadCount to 1 (not 3)
> --------------------------------------------------
>
> Key: LUCENE-2060
> URL: https://issues.apache.org/jira/browse/LUCENE-2060
> Project: Lucene - Java
> Issue Type: Improvement
> Components: Index
> Reporter: Michael McCandless
> Assignee: Michael McCandless
> Priority: Minor
> Fix For: 3.0
>
>
> From rough experience, I think the current default of 3 is too large. I think we get the most bang for the buck going from 0 to 1.
> I think this will especially impact optimize on an index with many segments -- in this case the MergePolicy happily exposes concurrency (multiple pending merges), and CMS will happily launch 3 threads to carry that out.
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