Hi, We're starting to upgrade our solr cluster to version 5.5. So we removed one slave node from the cluster and installed solr 5.5.4 on it and started solr. So it started copying the index from the master. However, we noticed a drop in the replication speed compared to the other nodes which were still running solr 4. To do a fair comparison, I removed another slave node from the cluster and disabled replication on it till the new node has caught up with it. When both these nodes were at the same index generation, I turned replication on for both the nodes. Now, it has been over 15 hours since this exercise and the new node has again started lagging behind. Currently, the node with solr 5.5 is seven generations behind the other node. Is it because the master is running solr 4 and this node is running solr 5? Has anyone else faced similar problem while upgrading?
-- Himanshu Sachdeva
