The circumstance I've most typically seen the index.<timestamp> show up is when an update is sent to a slave server. The replication then appears to preserve the updated slave index in a separate folder while still respecting the correct data from the master.
On Sep 5, 2013, at 8:03 PM, Shawn Heisey <s...@elyograg.org> wrote: > On 9/5/2013 6:48 PM, Aditya Sakhuja wrote: >> I am running solr 4.1 for now, and am confused about the structure and >> naming of the contents of the data dir. I do not see the index.properties >> being generated on a fresh solr node start either. >> >> Can someone clarify when should one expect to see >> >> data/index vs. data/index.<timestamp>, and the index.properties along with >> the second version. > > I have never seen an index.properties file get created. I've used > versions from 1.4.0 through 4.4.0. > > Generally when you have an index.<timestamp> directory, it's because > you're doing replication. There may be other circumstances when it > appears, but I do not know what those are. > > As for the other files in the index directory, here's Lucene's file > format documentation: > > http://lucene.apache.org/core/4_4_0/core/org/apache/lucene/codecs/lucene42/package-summary.html#package_description > > Thanks, > Shawn >
