The naming is unclear, when I looked at this I had to thumb through the code a fair bit before discerning if it was the input segments or the output segment of a merge (it's the former). Though I find the current functionality somewhat odd because it will inherently exceed the given size with a merge, which is uncontrollable, making the exact setting somewhat arbitrary... What was the original use case?
On Thu, Jan 7, 2010 at 11:23 AM, Otis Gospodnetic <otis_gospodne...@yahoo.com> wrote: >> 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. >> > >> > >> > --------------------------------------------------------------------- >> > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org >> > For additional commands, e-mail: java-user-h...@lucene.apache.org >> > >> > >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org >> For additional commands, e-mail: java-user-h...@lucene.apache.org > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > For additional commands, e-mail: java-user-h...@lucene.apache.org > > --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
