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From Daniel Naber <>
Subject Re: Indexing performance with Lucene 1.9
Date Sun, 26 Feb 2006 02:18:49 GMT
On Samstag 25 Februar 2006 14:20, Eric Jain wrote:

> After upgrading to Lucene 1.9, an index that used to take about 9h to
> build now requires 13h. Any one else notice a decrease in performance?

Yes, I can reproduce this with the Lucene demo on a much smaller index of 
2000 documents. It (partly?) seems to be caused by my patch here:

This tries to fix an off-by-one bug with setMaxBufferedDocs, but it changes 
the way segments are merged, i.e. merging becomes slower. I guess this 
needs to be reverted. Maybe you can try doing that locally and see how it 
affects your performance.



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