I know that the latest Solr Cloud doesn't use standard replication but I have a question about how it appears to be working. I currently have the following cluster state
{"collection1":{ "slice1":{ "JamiesMac.local:8501_solr_slice1_shard1":{ "shard_id":"slice1", "state":"active", "core":"slice1_shard1", "collection":"collection1", "node_name":"JamiesMac.local:8501_solr", "base_url":"http://JamiesMac.local:8501/solr"}, "JamiesMac.local:8502_solr_slice1_shard2":{ "shard_id":"slice1", "state":"active", "core":"slice1_shard2", "collection":"collection1", "node_name":"JamiesMac.local:8502_solr", "base_url":"http://JamiesMac.local:8502/solr"}, "jamiesmac:8501_solr_slice1_shard1":{ "shard_id":"slice1", "state":"down", "core":"slice1_shard1", "collection":"collection1", "node_name":"jamiesmac:8501_solr", "base_url":"http://jamiesmac:8501/solr"}, "jamiesmac:8502_solr_slice1_shard2":{ "shard_id":"slice1", "leader":"true", "state":"active", "core":"slice1_shard2", "collection":"collection1", "node_name":"jamiesmac:8502_solr", "base_url":"http://jamiesmac:8502/solr"}}, "slice2":{ "JamiesMac.local:8501_solr_slice2_shard2":{ "shard_id":"slice2", "state":"active", "core":"slice2_shard2", "collection":"collection1", "node_name":"JamiesMac.local:8501_solr", "base_url":"http://JamiesMac.local:8501/solr"}, "JamiesMac.local:8502_solr_slice2_shard1":{ "shard_id":"slice2", "state":"active", "core":"slice2_shard1", "collection":"collection1", "node_name":"JamiesMac.local:8502_solr", "base_url":"http://JamiesMac.local:8502/solr"}, "jamiesmac:8501_solr_slice2_shard2":{ "shard_id":"slice2", "state":"down", "core":"slice2_shard2", "collection":"collection1", "node_name":"jamiesmac:8501_solr", "base_url":"http://jamiesmac:8501/solr"}, "jamiesmac:8502_solr_slice2_shard1":{ "shard_id":"slice2", "leader":"true", "state":"active", "core":"slice2_shard1", "collection":"collection1", "node_name":"jamiesmac:8502_solr", "base_url":"http://jamiesmac:8502/solr"}}}} I then added some docs to the following shards using SolrJ http://localhost:8502/solr/slice2_shard1 http://localhost:8502/solr/slice1_shard2 I then bring back up the other cores and I don't see replication happening. Looking at the stats for each core I see that on the 8501 instance (the instance that was off) the number of docs is 0, so I've clearly set something up incorrectly. Any help on this would be greatly appreciated.