Assign a role to a given node in the cluster. The only supported role
as of 4.7 is 'overseer' . Use this API to dedicate a particular node as Overseer.
Invoke it multiple times to add more nodes. This is useful in large clusters where
an Overseer is likely to get overloaded . If available, one among the list of
nodes which are assigned the 'overseer' role would become the overseer. The
system would assign the role to any other node if none of the designated nodes
are up and running
Usage
collection_addrole(conn, role = "overseer", node, raw = FALSE, ...)
# NOT RUN {(conn <- SolrClient$new())
# get list of nodesnodes <- conn$collection_clusterstatus()$cluster$live_nodes
collection_addrole(conn, node = nodes[1])
# }