Hello, We are using SolrCloud with 5 nodes, 2 collections, 2 shards each. The problem we are seeing is a huge drop on writes when the number of replicas increase.
When we index (using DIH and batches) a collection with no replicas, we are able to index at 1800 inserts/sec. That number decreases to 1200 with 1 replica, 800 with 2 replicas and 400 with 3 replicas and it keeps getting worst when more replicas are added. We've been reading about it and it seems that the `replicationFactor` plays a big role on that, but we've got it set to 1, so I'm not sure why it keeps decreasing when more replicas are added. In fact, we don't need the data to be replicated in real time (we can even afford minutes of delay), but I've been unable to find how to tune that. Has anyone experienced a similar behaviour? is there any way to increase the indexing performance when using SolrCloud? We've seen posts about people having +100 replicas, so my feeling is that there's something to tune that we are not doing. Thanks Isart Montane Mogas
