I believe this is the same issue as described, I'm running 4.2 and as you can see my slave is a couple versions ahead of the master (all three slaves show the same behavior). This was never the case until I upgraded from 4.0 to 4.2.
Master: 1363272681951 93 1,022.31 MB Slave: 1363273274085 95 1,022.31 MB -- View this message in context: http://lucene.472066.n3.nabble.com/Solr-4-1-monitoring-with-solr-replication-command-details-indexVersion-tp4047329p4047380.html Sent from the Solr - User mailing list archive at Nabble.com.