$ juju run --unit slave/0 'charms.reactive -y get_states'
apache-bigtop-datanode.installed: null
apache-bigtop-datanode.started: null
apache-bigtop-nodemanager.installed: null
apache-bigtop-nodemanager.started: null
bigtop.available: null
install_java: null
namenode.joined:
  conversations: [reactive.conversations.namenode.global]
  relation: namenode
namenode.ready:
  conversations: [reactive.conversations.namenode.global]
  relation: namenode
resourcemanager.joined:
  conversations: [reactive.conversations.resourcemanager.global]
  relation: resourcemanager
resourcemanager.ready:
  conversations: [reactive.conversations.resourcemanager.global]
  relation: resourcemanager