/// <summary>Verify the support for decommissioning a datanode that is already dead.</summary>
/// <remarks>
/// Verify the support for decommissioning a datanode that is already dead.
/// Under this scenario the datanode should immediately be marked as
/// DECOMMISSIONED
/// </remarks>
/// <exception cref="System.Exception"/>
public virtual void TestDecommissionDeadDN()
{
Logger log = Logger.GetLogger(typeof(DecommissionManager));
log.SetLevel(Level.Debug);
DatanodeID dnID = cluster.GetDataNodes()[0].GetDatanodeId();
string dnName = dnID.GetXferAddr();
MiniDFSCluster.DataNodeProperties stoppedDN = cluster.StopDataNode(0);
DFSTestUtil.WaitForDatanodeState(cluster, dnID.GetDatanodeUuid(), false, 30000);
FSNamesystem fsn = cluster.GetNamesystem();
DatanodeManager dm = fsn.GetBlockManager().GetDatanodeManager();
DatanodeDescriptor dnDescriptor = dm.GetDatanode(dnID);
DecommissionNode(fsn, localFileSys, dnName);
dm.RefreshNodes(conf);
BlockManagerTestUtil.RecheckDecommissionState(dm);
NUnit.Framework.Assert.IsTrue(dnDescriptor.IsDecommissioned());
// Add the node back
cluster.RestartDataNode(stoppedDN, true);
cluster.WaitActive();
// Call refreshNodes on FSNamesystem with empty exclude file to remove the
// datanode from decommissioning list and make it available again.
WriteConfigFile(localFileSys, excludeFile, null);
dm.RefreshNodes(conf);
}
internal virtual void Compare(DatanodeID dn, DatanodeID dn2)
{
NUnit.Framework.Assert.AreEqual(dn.GetIpAddr(), dn2.GetIpAddr());
NUnit.Framework.Assert.AreEqual(dn.GetHostName(), dn2.GetHostName());
NUnit.Framework.Assert.AreEqual(dn.GetDatanodeUuid(), dn2.GetDatanodeUuid());
NUnit.Framework.Assert.AreEqual(dn.GetXferPort(), dn2.GetXferPort());
NUnit.Framework.Assert.AreEqual(dn.GetInfoPort(), dn2.GetInfoPort());
NUnit.Framework.Assert.AreEqual(dn.GetIpcPort(), dn2.GetIpcPort());
}