public virtual void TestChooseTarget2()
{
DatanodeStorageInfo[] targets;
BlockPlacementPolicyDefault repl = (BlockPlacementPolicyDefault)replicator;
IList <DatanodeStorageInfo> chosenNodes = new AList <DatanodeStorageInfo>();
ICollection <Node> excludedNodes = new HashSet <Node>();
excludedNodes.AddItem(dataNodes[1]);
targets = repl.ChooseTarget(filename, 4, dataNodes[0], chosenNodes, false, excludedNodes
, BlockSize, TestBlockStoragePolicy.DefaultStoragePolicy);
NUnit.Framework.Assert.AreEqual(targets.Length, 4);
NUnit.Framework.Assert.AreEqual(storages[0], targets[0]);
NUnit.Framework.Assert.IsTrue(cluster.IsNodeGroupAware());
// Make sure no replicas are on the same nodegroup
for (int i = 1; i < 4; i++)
{
NUnit.Framework.Assert.IsFalse(IsOnSameNodeGroup(targets[0], targets[i]));
}
NUnit.Framework.Assert.IsTrue(IsOnSameRack(targets[1], targets[2]) || IsOnSameRack
(targets[2], targets[3]));
NUnit.Framework.Assert.IsFalse(IsOnSameRack(targets[1], targets[3]));
excludedNodes.Clear();
chosenNodes.Clear();
excludedNodes.AddItem(dataNodes[1]);
chosenNodes.AddItem(storages[2]);
targets = repl.ChooseTarget(filename, 1, dataNodes[0], chosenNodes, true, excludedNodes
, BlockSize, TestBlockStoragePolicy.DefaultStoragePolicy);
System.Console.Out.WriteLine("targets=" + Arrays.AsList(targets));
NUnit.Framework.Assert.AreEqual(2, targets.Length);
//make sure that the chosen node is in the target.
int i_1 = 0;
for (; i_1 < targets.Length && !storages[2].Equals(targets[i_1]); i_1++)
{
}
NUnit.Framework.Assert.IsTrue(i_1 < targets.Length);
}