Two scenarios I observed where we can bring up a replica even when I think it shouldn't. legacyCloud is set to false.
- I have two nodes A and B. - CREATE collection 'test' with 1 shard, 1 replica. It gets created on node A. - manually copy test_shard1_replica1 folder to node B's solr home. - Bring down node A. - Restart node B. The shard comes up registering itself on node B and becomes 'active' - I have two nodes A and B ( this is down currently ). - CREATE collection 'test' with 1 shard, 1 replica. It gets created on node A. - manually copy test_shard1_replica1 folder to node B's solr home. - Start node B. The shard comes up registering itself on node B and stays 'down'. The reason being the leader is still node A but clusterstate has base_url of Node B. This is the error in the logs - "Error getting leader from zk for shard shard1 In legacyCloud=false you get a 'no_such_replica in clusterstate' error if the 'coreNodeName' is not present in clusterstate. But in my two observations the 'coreNodeName' were the same, hence I ran into that scenario. Should we make the check more stringent to not allow this to happen? Check against base_url also? Also should we be making legacyCloud=false as default in 5.x? -- Regards, Varun Thacker http://www.vthacker.in/
