Bernhard Messer writes: > > >However, three times the space sounds a bit too much, or I make a > >mistake in the book. :) > > > > > there already was a discussion about disk usage during index optimize. > Please have a look to the developers list at: > http://mail-archives.apache.org/eyebrowse/[EMAIL PROTECTED]&msgId=1797569 > <http://mail-archives.apache.org/eyebrowse/[EMAIL PROTECTED]&msgId=1797569> > where i made some measurements about the disk usage within lucene. > At that time i proposed a patch which was reducing disk total used disk > size from 3 times to a little more than 2 times of the final index size. > Together with Christoph we implemented some improvements to the > optimization patch and finally commit the changes. > Hmm. In the case that the index is used (open reader), I doubt your patch makes a difference. In that case the disk space used by the non optimized index will still be used even if the files are deleted (on unix/linux). What happens, if disk space run's out during creation of the compound index? Will the non compound files be a usable index? Otherwise you risk to loose the index.
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