Indexes show up in data/query node

1. Created a cluster with 1 node(data/index/query):node1 and added travel-sample bucket.Index path given as /opt/couchbase/var/lib/couchbase/index. Indexes show up correctly in index folder but also see the error in logs:

Service 'goxdcr' exited with status 1. Restarting. Messages: MetadataService 2015-08-26T13:54:34.741-07:00 [ERROR] metakv.ListAllChildren failed. path=/remoteCluster/, err=Get http://127.0.0.1:8091/_metakv/remoteCluster/: CBAuth database is stale: last reason: dial tcp 127.0.0.1:8091: connection refused, num_of_retry=2
MetadataService 2015-08-26T13:54:34.741-07:00 [ERROR] metakv.ListAllChildren failed. path=/remoteCluster/, err=Get http://127.0.0.1:8091/_metakv/remoteCluster/: CBAuth database is stale: last reason: dial tcp 127.0.0.1:8091: connection refused, num_of_retry=3
MetadataService 2015-08-26T13:54:34.742-07:00 [ERROR] metakv.ListAllChildren failed. path=/remoteCluster/, err=Get http://127.0.0.1:8091/_metakv/remoteCluster/: CBAuth database is stale: last reason: dial tcp 127.0.0.1:8091: connection refused, num_of_retry=4
RemoteClusterService 2015-08-26T13:54:34.742-07:00 [ERROR] Failed to get all entries, err=metakv failed for max number of retries = 5
[goport] 2015/08/26 13:54:34 /opt/couchbase/bin/goxdcr terminated: exit status 1

2. Added another data/query node:node2 to the cluster.
3. Rebalance operation performed.
4. Connected to node2 via ssh and still see indexes in:
/opt/couchbase/var/lib/couchbase/data

Since node2 is a data/query node why do we have @indexes in data folder?