public virtual void TestAddVolumeFailures()
{
StartDFSCluster(1, 1);
string dataDir = cluster.GetDataDirectory();
DataNode dn = cluster.GetDataNodes()[0];
IList <string> newDirs = Lists.NewArrayList();
int NumNewDirs = 4;
for (int i = 0; i < NumNewDirs; i++)
{
FilePath newVolume = new FilePath(dataDir, "new_vol" + i);
newDirs.AddItem(newVolume.ToString());
if (i % 2 == 0)
{
// Make addVolume() fail.
newVolume.CreateNewFile();
}
}
string newValue = dn.GetConf().Get(DFSConfigKeys.DfsDatanodeDataDirKey) + "," + Joiner
.On(",").Join(newDirs);
try
{
dn.ReconfigurePropertyImpl(DFSConfigKeys.DfsDatanodeDataDirKey, newValue);
NUnit.Framework.Assert.Fail("Expect to throw IOException.");
}
catch (ReconfigurationException e)
{
string errorMessage = e.InnerException.Message;
string[] messages = errorMessage.Split("\\r?\\n");
NUnit.Framework.Assert.AreEqual(2, messages.Length);
Assert.AssertThat(messages[0], CoreMatchers.ContainsString("new_vol0"));
Assert.AssertThat(messages[1], CoreMatchers.ContainsString("new_vol2"));
}
// Make sure that vol0 and vol2's metadata are not left in memory.
FsDatasetSpi <object> dataset = dn.GetFSDataset();
foreach (FsVolumeSpi volume in dataset.GetVolumes())
{
Assert.AssertThat(volume.GetBasePath(), IS.Is(CoreMatchers.Not(CoreMatchers.AnyOf
(IS.Is(newDirs[0]), IS.Is(newDirs[2])))));
}
DataStorage storage = dn.GetStorage();
for (int i_1 = 0; i_1 < storage.GetNumStorageDirs(); i_1++)
{
Storage.StorageDirectory sd = storage.GetStorageDir(i_1);
Assert.AssertThat(sd.GetRoot().ToString(), IS.Is(CoreMatchers.Not(CoreMatchers.AnyOf
(IS.Is(newDirs[0]), IS.Is(newDirs[2])))));
}
// The newly effective conf does not have vol0 and vol2.
string[] effectiveVolumes = dn.GetConf().Get(DFSConfigKeys.DfsDatanodeDataDirKey)
.Split(",");
NUnit.Framework.Assert.AreEqual(4, effectiveVolumes.Length);
foreach (string ev in effectiveVolumes)
{
Assert.AssertThat(StorageLocation.Parse(ev).GetFile().GetCanonicalPath(), IS.Is(CoreMatchers.Not
(CoreMatchers.AnyOf(IS.Is(newDirs[0]), IS.Is(newDirs[2])))));
}
}
/// <exception cref="System.IO.IOException"/>
/// <exception cref="System.Exception"/>
public virtual void TestGetReconfigureStatus()
{
ReconfigurationUtil ru = Org.Mockito.Mockito.Mock <ReconfigurationUtil>();
datanode.SetReconfigurationUtil(ru);
IList <ReconfigurationUtil.PropertyChange> changes = new AList <ReconfigurationUtil.PropertyChange
>();
FilePath newDir = new FilePath(cluster.GetDataDirectory(), "data_new");
newDir.Mkdirs();
changes.AddItem(new ReconfigurationUtil.PropertyChange(DFSConfigKeys.DfsDatanodeDataDirKey
, newDir.ToString(), datanode.GetConf().Get(DFSConfigKeys.DfsDatanodeDataDirKey)
));
changes.AddItem(new ReconfigurationUtil.PropertyChange("randomKey", "new123", "old456"
));
Org.Mockito.Mockito.When(ru.ParseChangedProperties(Matchers.Any <Configuration>(),
Matchers.Any <Configuration>())).ThenReturn(changes);
int port = datanode.GetIpcPort();
string address = "localhost:" + port;
Assert.AssertThat(admin.StartReconfiguration("datanode", address), CoreMatchers.Is
(0));
IList <string> outputs = null;
int count = 100;
while (count > 0)
{
outputs = GetReconfigureStatus("datanode", address);
if (!outputs.IsEmpty() && outputs[0].Contains("finished"))
{
break;
}
count--;
Sharpen.Thread.Sleep(100);
}
NUnit.Framework.Assert.IsTrue(count > 0);
Assert.AssertThat(outputs.Count, CoreMatchers.Is(8));
// 3 (SUCCESS) + 4 (FAILED)
IList <StorageLocation> locations = DataNode.GetStorageLocations(datanode.GetConf(
));
Assert.AssertThat(locations.Count, CoreMatchers.Is(1));
Assert.AssertThat(locations[0].GetFile(), CoreMatchers.Is(newDir));
// Verify the directory is appropriately formatted.
NUnit.Framework.Assert.IsTrue(new FilePath(newDir, Storage.StorageDirCurrent).IsDirectory
());
int successOffset = outputs[1].StartsWith("SUCCESS:") ? 1 : 5;
int failedOffset = outputs[1].StartsWith("FAILED:") ? 1 : 4;
Assert.AssertThat(outputs[successOffset], CoreMatchers.ContainsString("Change property "
+ DFSConfigKeys.DfsDatanodeDataDirKey));
Assert.AssertThat(outputs[successOffset + 1], CoreMatchers.Is(CoreMatchers.AllOf(
CoreMatchers.ContainsString("From:"), CoreMatchers.ContainsString("data1"), CoreMatchers.ContainsString
("data2"))));
Assert.AssertThat(outputs[successOffset + 2], CoreMatchers.Is(CoreMatchers.Not(CoreMatchers.AnyOf
(CoreMatchers.ContainsString("data1"), CoreMatchers.ContainsString("data2")))));
Assert.AssertThat(outputs[successOffset + 2], CoreMatchers.Is(CoreMatchers.AllOf(
CoreMatchers.ContainsString("To"), CoreMatchers.ContainsString("data_new"))));
Assert.AssertThat(outputs[failedOffset], CoreMatchers.ContainsString("Change property randomKey"
));
Assert.AssertThat(outputs[failedOffset + 1], CoreMatchers.ContainsString("From: \"old456\""
));
Assert.AssertThat(outputs[failedOffset + 2], CoreMatchers.ContainsString("To: \"new123\""
));
}