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Schema:
{ "fields":
    [ {"name": "version", "type": "int", "doc": "version id"},
      {"name": "isr",
       "type": {"type": "array",
                "items": "int",
                "doc": "an array of the id of replicas in isr"}
      },
      {"name": "leader", "type": "int", "doc": "id of the leader replica"},
      {"name": "controllerEpochcontroller_epoch", "type": "int", "doc": "epoch of the controller that last updated the leader and isr info"},
      {"name": "leaderEpochleader_epoch", "type": "int", "doc": "epoc of the leader"}
    ]
}

Example:
{
  "version": 1,
  "isr": [0,1],
  "leader": 0,
  "controllerEpochcontroller_epoch": 1,
  "leaderEpochleader_epoch": 0
}

Schema:
{ "fields":
    [ {"name": "version", "type": "int", "doc": "version id"},
      {"name": "host", "type": "string", "doc": "ip address or host name of the broker"},
      {"name": "port", "type": "int", "doc": "port of the broker"},
      {"name": "jmxPortjmx_port", "type": "int", "doc": "port for jmx"}
    ]
}

Example:
{
  "version": 1,
  "host": "192.168.1.148",
  "port": 9092,
  "jmxPortjmx_port": 9999
}