How to use

TestClusterTopology

in

org.apache.hadoop.net

cluster.add(getNewNode("node1", "/d1/r1"));
NodeElement node2 = getNewNode("node2", "/d1/r2");
cluster.add(node2);
cluster.add(getNewNode("node3", "/d1/r3"));
NodeElement node3 = getNewNode("node4", "/d1/r4");
cluster.add(node3);
assertEquals("4 nodes should be available", 4,
  cluster.countNumOfAvailableNodes(NodeBase.ROOT, excludedNodes));
NodeElement deadNode = getNewNode("node5", "/d1/r2");
excludedNodes.add(deadNode);
assertEquals("4 nodes should be available with extra excluded Node", 4,
  cluster.countNumOfAvailableNodes(NodeBase.ROOT, excludedNodes));
assertEquals("excluded nodes with ROOT scope should be considered", 3,
  cluster.countNumOfAvailableNodes(NodeBase.ROOT, excludedNodes));
assertEquals("excluded nodes without ~ scope should be considered", 2,
  cluster.countNumOfAvailableNodes("~" + deadNode.getNetworkLocation(),
    excludedNodes));
assertEquals("excluded nodes with rack scope should be considered", 1,
  cluster.countNumOfAvailableNodes(deadNode.getNetworkLocation(),
    excludedNodes));
assertEquals("excluded nodes with ~ scope should be considered", 2,
  cluster.countNumOfAvailableNodes("~" + deadNode.getNetworkLocation(),
    excludedNodes));
assertEquals("No nodes should be considered for non-exist scope", 0,
  cluster.countNumOfAvailableNodes("/non-exist", excludedNodes));

cluster.add(getNewNode("node1", "/d1/r1"));
NodeElement node2 = getNewNode("node2", "/d1/r2");
cluster.add(node2);
cluster.add(getNewNode("node3", "/d1/r3"));
NodeElement node3 = getNewNode("node4", "/d1/r4");
cluster.add(node3);
assertEquals("4 nodes should be available", 4,
  cluster.countNumOfAvailableNodes(NodeBase.ROOT, excludedNodes));
NodeElement deadNode = getNewNode("node5", "/d1/r2");
excludedNodes.add(deadNode);
assertEquals("4 nodes should be available with extra excluded Node", 4,
  cluster.countNumOfAvailableNodes(NodeBase.ROOT, excludedNodes));
assertEquals("excluded nodes with ROOT scope should be considered", 3,
  cluster.countNumOfAvailableNodes(NodeBase.ROOT, excludedNodes));
assertEquals("excluded nodes without ~ scope should be considered", 2,
  cluster.countNumOfAvailableNodes("~" + deadNode.getNetworkLocation(),
    excludedNodes));
assertEquals("excluded nodes with rack scope should be considered", 1,
  cluster.countNumOfAvailableNodes(deadNode.getNetworkLocation(),
    excludedNodes));
assertEquals("excluded nodes with ~ scope should be considered", 2,
  cluster.countNumOfAvailableNodes("~" + deadNode.getNetworkLocation(),
    excludedNodes));
assertEquals("No nodes should be considered for non-exist scope", 0,
  cluster.countNumOfAvailableNodes("/non-exist", excludedNodes));