On 4/1/2015 6:35 AM, Dominique Bejean wrote: > Is it normal with Solr 4.10.3 that the data directory of replicas still > contains directories like > > index.3636365667474747 > index.9990809809888876 > > and files > > index.properties > replica.properties > > If yes, why and in which circumstances ?
The index.nnnnnnnnnnnnnnnn directories are created during master/slave index replication. If you're running SolrCloud, then replication is only used for index recovery. Index recovery is only required in situations where the replicas are so far behind that the transaction log cannot be used to synchronize them, and sometimes happens when a Solr node is restarted. If SolrCloud index recovery is actually required when you are NOT restarting Solr instances, your index might be having problems. Regardless of whether you're running SolrCloud or not, normally when one of those directories with a numeric suffix is created, it will be changed to "index" with no suffix after the replication is complete, but if Solr is unable to change the directories for some reason, it will simply keep and use the new directory with the suffix. Do you see any ERROR or WARN entries in your solr logfile that would indicate why Solr cannot change the directory name? Are you on Windows? Problems like this are more common on Windows, because Windows prevents a lot of file operations when files/directories are open. The long-term existence of directories with this naming convention indicates that *something* went wrong, but you would need to consult your logs to find out what happened. There have been several bugs over Solr's history that cause this problem. Thanks, Shawn
