Yes, you can change the mergeFactor. More important than the mergeFactor is this:
<ramBufferSizeMB>32</ramBufferSizeMB> Pump it up as much as your hardware/JVM allows. And use appropriate -Xmx, of course. Otis -- Sematext -- http://sematext.com/ -- Lucene - Solr - Nutch ----- Original Message ---- > From: "Barnett, Jeffrey" <[EMAIL PROTECTED]> > To: "solr-user@lucene.apache.org" <solr-user@lucene.apache.org> > Sent: Thursday, October 30, 2008 3:49:30 PM > Subject: Changing mergeFactor in mid-stream? > > The http://wiki.apache.org/lucene-java/ImproveIndexingSpeed page suggests > that > indexing will be sped up by using higher values of mergeFactor, while search > speed improves with lower values. I need to create an index using multiple > batches of documents. My question is, can I begin building with a high > mergeFactor for the bulk of the load and then switch to a lower value for the > final batch? I build the indices offline, and only swap them to online when > complete. The online index is never updated.