David, I find Mike McCandless’ blog article to be very informative. Give it a go and let us know if you are still seeking clarification:
http://blog.mikemccandless.com/2011/02/visualizing-lucenes-segment-merges.html Jason On Nov 7, 2013, at 5:09 AM, david.dav...@correo.aeat.es wrote: > Hi, > > I have an index very big, with 337 G more or less. I am using Solr 4.2. > The problem we have is related with the size of segments: this is the size > of the biggest ones: > 324 G, 3.7G, 3.6 G, 1.6 G, 1.6 G, 465 M ... We have > LogByteSizeMergePolicy with 10 as MergeFactor in our solrconfig. > > Really the issue is not a problem, but at least I would like to know why > my segments have this size. According with I have read in papers, if I > have a MergeFactor of 10 each level within the index should be one order > of magnitude bigger than previously. So , I can't understand why I have a > segment of 324 G while the others are only of 3 G, this is 2 orders of > magnitude bigger. > > Is this correct or it is a problem with my index? > Where can I read a good explanation about the Merge Policy? > > Thank you very much, > > Regards, > > David Dávila > AEAT
