hadoop-hdds/common/src/test/resources/networkTopologyTestFiles/good.yaml

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#
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---
# Cost: The cost of crossing this layer.
# The value should be positive integer or 0. This field is optional.
# When it's not defined, it's value is default "1".
cost: 1

# The prefix of this layer.
# If the prefix is "dc", then every name in this layer should start with "dc",
# such as "dc1", "dc2".
# Note that unlike XML schema, the prefix must be specified explicitly if the type is InnerNode.
prefix: /

# Layer type, optional field, default value InnerNode.
# Current value range : {ROOT, INNER_NODE, LEAF_NODE}
type: ROOT

# Layer name
defaultName: root

# The sub layer of current layer. We use list
sublayer:
  -
    cost: 1
    prefix: dc
    defaultName: datacenter
    type: INNER_NODE
    sublayer:
      -
        cost: 1
        prefix: rack
        defaultName: rack
        type: INNER_NODE
        sublayer:
            -
              cost: 1
              prefix: ng
              defaultName: nodegroup
              type: INNER_NODE
              sublayer:
                -
                  defaultName: node
                  type: LEAF_NODE
                  prefix: node
...