json_schema: {
      "properties": {
          "bookkeeper": {
              "description": "bookkeeper specific configuration properties",
              "properties": {
                  "BK_BOOKIE_EXTRA_OPTS": {
                      "default": "\"-Xms1g -Xmx1g -XX:MaxDirectMemorySize=1g -XX:+UseG1GC -XX:MaxGCPauseMillis=10 -XX:+ParallelRefProcEnabled -XX:+UnlockExperimentalVMOptions -XX:+AggressiveOpts -XX:+DoEscapeAnalysis -XX:ParallelGCThreads=32 -XX:ConcGCThreads=32 -XX:G1NewSizePercent=50 -XX:+DisableExplicitGC -XX:-ResizePLAB\"",
                      "description": "env -- bookkeeper JVM runtime options",
                      "type": "string"
                  },
                  "BK_bookiePort": {
                      "default": 3181,
                      "description": "env -- bookkeeper export service port, using PORT0 in marathon",
                      "type": "integer"
                  },
                  "BK_indexDirectories": {
                      "default": "/bookkeeper/data/index",
                      "description": "env -- bookkeeper data ledgers storage directory",
                      "type": "string"
                  },
                  "BK_journalDirectory": {
                      "default": "/bookkeeper/data/journal",
                      "description": "env -- bookkeeper data journal storage directory",
                      "type": "string"
                  },
                  "BK_ledgerDirectories": {
                      "default": "/bookkeeper/data/ledgers",
                      "description": "env -- bookkeeper data ledgers storage directory",
                      "type": "string"
                  },
                  "BK_zkServers": {
                      "default": "master.mesos:2181",
                      "description": "env -- zookeeper server instance",
                      "type": "string"
                  },
                  "bookkeeper_cmd": {
                      "default": [],
                      "description": "command passed in as parameter for entrypoint.sh",
                      "items": {
                          "pattern": "^[\\s]+",
                          "type": "string"
                      },
                      "type": "array"
                  },
                  "cpus": {
                      "default": 1,
                      "description": "CPU shares to allocate to each bookkeeper instance.",
                      "minimum": 0.5,
                      "type": "number"
                  },
                  "index_volume_size": {
                      "default": 7000,
                      "description": "persistent Volume size(MB) for bookkeeper index data.",
                      "minimum": 2000,
                      "type": "number"
                  },
                  "instances": {
                      "default": 1,
                      "description": "Number of bookkeeper instances to run.",
                      "minimum": 1,
                      "type": "integer"
                  },
                  "journal_volume_size": {
                      "default": 4000,
                      "description": "persistent Volume size(MB) for bookkeeper journal data.",
                      "minimum": 2000,
                      "type": "number"
                  },
                  "ledgers_volume_size": {
                      "default": 20000,
                      "description": "persistent Volume size(MB) for bookkeeper ledgers data.",
                      "minimum": 10000,
                      "type": "number"
                  },
                  "mem": {
                      "default": 1024.0,
                      "description": "Memory (MB) to allocate to each bookkeeper task.",
                      "minimum": 512.0,
                      "type": "number"
                  },
                  "name": {
                      "default": "bookkeeper",
                      "description": "The name of this DC/OS service.",
                      "type": "string"
                  }
              },
              "required": [
                  "cpus",
                  "mem",
                  "instances",
                  "BK_BOOKIE_EXTRA_OPTS",
                  "BK_zkServers",
                  "BK_bookiePort",
                  "BK_journalDirectory",
                  "BK_ledgerDirectories",
                  "BK_indexDirectories"
              ],
              "type": "object"
          }
      },
      "type": "object"
  }