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From Otis Gospodnetic <otis_gospodne...@yahoo.com>
Subject Re: Is there a way to limit the size of an index?
Date Thu, 07 Jan 2010 19:23:32 GMT
> Merge factor controls how many segments are merged at once.  The default is 10.
> 
> The maxMergeMB setting sets the max size for a given segment to be
> included in a merge.

I wonder if renaming that to maxSegSizeMergeMB would make it more obvious what this does?

Otis
--
Sematext -- http://sematext.com/ -- Solr - Lucene - Nutch

> Roughly, the upper bound on merged segments is the sum of their sizes.
> 
> So the rough upper bound on any segment's size is mergeFactor * maxMergeMB.
> 
> Mike
> 
> On Thu, Jan 7, 2010 at 11:04 AM, Dvora wrote:
> >
> > Can you explain how the combination of merge factor and max merge size
> > control the size of files?
> >
> > For example, if one would like to limit the files size to 3,4 or 7MB - how
> > these parameters values can be predicted?
> >
> >
> >
> > Michael McCandless-2 wrote:
> >>
> >>
> >> This tells the IndexWriter NOT to merge any segment that's over 1.0 MB
> >> in size.  With a default merge factor of 10, this should "generally"
> >> mean you don't get a segment over 10MB, though it may not be a hard
> >> guarantee (you can lower the 1.0 if you still see a segment over 10
> >> MB).
> >>
> >>
> >
> > --
> > View this message in context: 
> http://old.nabble.com/Is-there-a-way-to-limit-the-size-of-an-index--tp27056573p27062291.html
> > Sent from the Lucene - Java Users mailing list archive at Nabble.com.
> >
> >
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