Why do you care? Merging is generally a background process, or are you doing heavy indexing? In a master/slave setup, it's usually not really relevant except that (with 3.x), massive merges may temporarily stop indexing. Is that the problem?
Look at the merge policys, there are configurations that make this less painful. In trunk, DocumentWriterPerThread makes merges happen in the background, which helps the long-pause-while-indexing problem. Best Erick On Wed, May 2, 2012 at 7:22 AM, Prakashganesh, Prabhu <prabhu.prakashgan...@dowjones.com> wrote: > Ok, thanks Otis > Another question on merging > What is the best way to monitor merging? > Is there something in the log file that I can look for? > It seems like I have to monitor the system resources - read/write IOPS etc.. > and work out when a merge happened > It would be great if I can do it by looking at log files or in the admin UI. > Do you know if this can be done or if there is some tool for this? > > Thanks > Prabhu > > -----Original Message----- > From: Otis Gospodnetic [mailto:otis_gospodne...@yahoo.com] > Sent: 01 May 2012 15:12 > To: solr-user@lucene.apache.org > Subject: Re: Solr Merge during off peak times > > Hi Prabhu, > > I don't think such a merge policy exists, but it would be nice to have this > option and I imagine it wouldn't be hard to write if you really just base the > merge or no merge decision on the time of day (and maybe day of the week). > > Note that this should go into Lucene, not Solr, so if you decide to > contribute your work, please > see http://wiki.apache.org/lucene-java/HowToContribute > > Otis > ---- > Performance Monitoring for Solr - http://sematext.com/spm > > > > >>________________________________ >> From: "Prakashganesh, Prabhu" <prabhu.prakashgan...@dowjones.com> >>To: "solr-user@lucene.apache.org" <solr-user@lucene.apache.org> >>Sent: Tuesday, May 1, 2012 8:45 AM >>Subject: Solr Merge during off peak times >> >>Hi, >> I would like to know if there is a way to configure index merge policy in >>solr so that the merging happens during off peak hours. Can you please let me >>know if such a merge policy configuration exists? >> >>Thanks >>Prabhu >> >> >>
