CMS should default its maxThreadCount to 1 (not 3)
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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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