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From Paul Hill <p...@metajure.com>
Subject RE: More About NOT Optimizing
Date Thu, 08 Mar 2012 19:10:42 GMT
>  Uwe Schindler wrote:
> TieredMP is already the default in Lucene 3.5, unless you explicitely set another one!
> 

I was going to add the detail that I was running 3.4 at the moment (I'm looking to upgrade
very soon) and thought 
LogByteSizeMergePolicy was the default there, but I am wrong the actual code in IndexWriterConfig
is:

   if (matchVersion.onOrAfter(Version.LUCENE_32)) {
      mergePolicy = new TieredMergePolicy();
    } else {
      mergePolicy = new LogByteSizeMergePolicy();
    }

3.4 would be the TieredMergePolicy which means the in-house operational merge I saw was the
result of Tiered (running with default settings), not the result of LogByte.

-Paul



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