public virtual void TestDatanodeReport()
{
conf.SetInt(DFSConfigKeys.DfsNamenodeHeartbeatRecheckIntervalKey, 500);
// 0.5s
conf.SetLong(DFSConfigKeys.DfsHeartbeatIntervalKey, 1L);
MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).NumDataNodes(NumOfDatanodes
).Build();
try
{
//wait until the cluster is up
cluster.WaitActive();
string bpid = cluster.GetNamesystem().GetBlockPoolId();
IList <DataNode> datanodes = cluster.GetDataNodes();
DFSClient client = cluster.GetFileSystem().dfs;
AssertReports(NumOfDatanodes, HdfsConstants.DatanodeReportType.All, client, datanodes
, bpid);
AssertReports(NumOfDatanodes, HdfsConstants.DatanodeReportType.Live, client, datanodes
, bpid);
AssertReports(0, HdfsConstants.DatanodeReportType.Dead, client, datanodes, bpid);
// bring down one datanode
DataNode last = datanodes[datanodes.Count - 1];
Log.Info("XXX shutdown datanode " + last.GetDatanodeUuid());
last.Shutdown();
DatanodeInfo[] nodeInfo = client.DatanodeReport(HdfsConstants.DatanodeReportType.
Dead);
while (nodeInfo.Length != 1)
{
try
{
Sharpen.Thread.Sleep(500);
}
catch (Exception)
{
}
nodeInfo = client.DatanodeReport(HdfsConstants.DatanodeReportType.Dead);
}
AssertReports(NumOfDatanodes, HdfsConstants.DatanodeReportType.All, client, datanodes
, null);
AssertReports(NumOfDatanodes - 1, HdfsConstants.DatanodeReportType.Live, client,
datanodes, null);
AssertReports(1, HdfsConstants.DatanodeReportType.Dead, client, datanodes, null);
Sharpen.Thread.Sleep(5000);
MetricsAsserts.AssertGauge("ExpiredHeartbeats", 1, MetricsAsserts.GetMetrics("FSNamesystem"
));
}
finally
{
cluster.Shutdown();
}
}
public virtual void TestChangeStorageID()
{
string DnIpAddr = "127.0.0.1";
string DnHostname = "localhost";
int DnXferPort = 12345;
int DnInfoPort = 12346;
int DnInfoSecurePort = 12347;
int DnIpcPort = 12348;
Configuration conf = new HdfsConfiguration();
MiniDFSCluster cluster = null;
try
{
cluster = new MiniDFSCluster.Builder(conf).NumDataNodes(0).Build();
IPEndPoint addr = new IPEndPoint("localhost", cluster.GetNameNodePort());
DFSClient client = new DFSClient(addr, conf);
NamenodeProtocols rpcServer = cluster.GetNameNodeRpc();
// register a datanode
DatanodeID dnId = new DatanodeID(DnIpAddr, DnHostname, "fake-datanode-id", DnXferPort
, DnInfoPort, DnInfoSecurePort, DnIpcPort);
long nnCTime = cluster.GetNamesystem().GetFSImage().GetStorage().GetCTime();
StorageInfo mockStorageInfo = Org.Mockito.Mockito.Mock <StorageInfo>();
Org.Mockito.Mockito.DoReturn(nnCTime).When(mockStorageInfo).GetCTime();
Org.Mockito.Mockito.DoReturn(HdfsConstants.DatanodeLayoutVersion).When(mockStorageInfo
).GetLayoutVersion();
DatanodeRegistration dnReg = new DatanodeRegistration(dnId, mockStorageInfo, null
, VersionInfo.GetVersion());
rpcServer.RegisterDatanode(dnReg);
DatanodeInfo[] report = client.DatanodeReport(HdfsConstants.DatanodeReportType.All
);
NUnit.Framework.Assert.AreEqual("Expected a registered datanode", 1, report.Length
);
// register the same datanode again with a different storage ID
dnId = new DatanodeID(DnIpAddr, DnHostname, "changed-fake-datanode-id", DnXferPort
, DnInfoPort, DnInfoSecurePort, DnIpcPort);
dnReg = new DatanodeRegistration(dnId, mockStorageInfo, null, VersionInfo.GetVersion
());
rpcServer.RegisterDatanode(dnReg);
report = client.DatanodeReport(HdfsConstants.DatanodeReportType.All);
NUnit.Framework.Assert.AreEqual("Datanode with changed storage ID not recognized"
, 1, report.Length);
}
finally
{
if (cluster != null)
{
cluster.Shutdown();
}
}
}
/// <exception cref="System.IO.IOException"/>
internal static void AssertReports(int numDatanodes, HdfsConstants.DatanodeReportType
type, DFSClient client, IList <DataNode> datanodes, string bpid)
{
DatanodeInfo[] infos = client.DatanodeReport(type);
NUnit.Framework.Assert.AreEqual(numDatanodes, infos.Length);
DatanodeStorageReport[] reports = client.GetDatanodeStorageReport(type);
NUnit.Framework.Assert.AreEqual(numDatanodes, reports.Length);
for (int i = 0; i < infos.Length; i++)
{
NUnit.Framework.Assert.AreEqual(infos[i], reports[i].GetDatanodeInfo());
DataNode d = FindDatanode(infos[i].GetDatanodeUuid(), datanodes);
if (bpid != null)
{
//check storage
StorageReport[] computed = reports[i].GetStorageReports();
Arrays.Sort(computed, Cmp);
StorageReport[] expected = d.GetFSDataset().GetStorageReports(bpid);
Arrays.Sort(expected, Cmp);
NUnit.Framework.Assert.AreEqual(expected.Length, computed.Length);
for (int j = 0; j < expected.Length; j++)
{
NUnit.Framework.Assert.AreEqual(expected[j].GetStorage().GetStorageID(), computed
[j].GetStorage().GetStorageID());
}
}
}
}
public virtual void TestChangeIpcPort()
{
HdfsConfiguration conf = new HdfsConfiguration();
MiniDFSCluster cluster = null;
try
{
cluster = new MiniDFSCluster.Builder(conf).Build();
IPEndPoint addr = new IPEndPoint("localhost", cluster.GetNameNodePort());
DFSClient client = new DFSClient(addr, conf);
// Restart datanodes
cluster.RestartDataNodes();
// Wait until we get a heartbeat from the new datanode
DatanodeInfo[] report = client.DatanodeReport(HdfsConstants.DatanodeReportType.All
);
long firstUpdateAfterRestart = report[0].GetLastUpdate();
bool gotHeartbeat = false;
for (int i = 0; i < 10 && !gotHeartbeat; i++)
{
try
{
Sharpen.Thread.Sleep(i * 1000);
}
catch (Exception)
{
}
report = client.DatanodeReport(HdfsConstants.DatanodeReportType.All);
gotHeartbeat = (report[0].GetLastUpdate() > firstUpdateAfterRestart);
}
if (!gotHeartbeat)
{
NUnit.Framework.Assert.Fail("Never got a heartbeat from restarted datanode.");
}
int realIpcPort = cluster.GetDataNodes()[0].GetIpcPort();
// Now make sure the reported IPC port is the correct one.
NUnit.Framework.Assert.AreEqual(realIpcPort, report[0].GetIpcPort());
}
finally
{
if (cluster != null)
{
cluster.Shutdown();
}
}
}
/*
* Decommissions the node at the given index
*/
/// <exception cref="System.IO.IOException"/>
private string DecommissionNode(FSNamesystem namesystem, DFSClient client, FileSystem
localFileSys, int nodeIndex)
{
DatanodeInfo[] info = client.DatanodeReport(HdfsConstants.DatanodeReportType.Live
);
string nodename = info[nodeIndex].GetXferAddr();
DecommissionNode(namesystem, localFileSys, nodename);
return(nodename);
}
/// <summary>Tests replication in DFS.</summary>
/// <exception cref="System.IO.IOException"/>
public virtual void RunReplication(bool simulated)
{
Configuration conf = new HdfsConfiguration();
conf.SetBoolean(DFSConfigKeys.DfsNamenodeReplicationConsiderloadKey, false);
if (simulated)
{
SimulatedFSDataset.SetFactory(conf);
}
MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).NumDataNodes(numDatanodes
).Racks(racks).Build();
cluster.WaitActive();
IPEndPoint addr = new IPEndPoint("localhost", cluster.GetNameNodePort());
DFSClient client = new DFSClient(addr, conf);
DatanodeInfo[] info = client.DatanodeReport(HdfsConstants.DatanodeReportType.Live
);
NUnit.Framework.Assert.AreEqual("Number of Datanodes ", numDatanodes, info.Length
);
FileSystem fileSys = cluster.GetFileSystem();
try
{
Path file1 = new Path("/smallblocktest.dat");
WriteFile(fileSys, file1, 3);
CheckFile(fileSys, file1, 3);
CleanupFile(fileSys, file1);
WriteFile(fileSys, file1, 10);
CheckFile(fileSys, file1, 10);
CleanupFile(fileSys, file1);
WriteFile(fileSys, file1, 4);
CheckFile(fileSys, file1, 4);
CleanupFile(fileSys, file1);
WriteFile(fileSys, file1, 1);
CheckFile(fileSys, file1, 1);
CleanupFile(fileSys, file1);
WriteFile(fileSys, file1, 2);
CheckFile(fileSys, file1, 2);
CleanupFile(fileSys, file1);
}
finally
{
fileSys.Close();
cluster.Shutdown();
}
}
public virtual void TestBlockReplacement()
{
Configuration Conf = new HdfsConfiguration();
string[] InitialRacks = new string[] { "/RACK0", "/RACK1", "/RACK2" };
string[] NewRacks = new string[] { "/RACK2" };
short ReplicationFactor = (short)3;
int DefaultBlockSize = 1024;
Random r = new Random();
Conf.SetLong(DFSConfigKeys.DfsBlockSizeKey, DefaultBlockSize);
Conf.SetInt(DFSConfigKeys.DfsBytesPerChecksumKey, DefaultBlockSize / 2);
Conf.SetLong(DFSConfigKeys.DfsBlockreportIntervalMsecKey, 500);
cluster = new MiniDFSCluster.Builder(Conf).NumDataNodes(ReplicationFactor).Racks(
InitialRacks).Build();
try
{
cluster.WaitActive();
FileSystem fs = cluster.GetFileSystem();
Path fileName = new Path("/tmp.txt");
// create a file with one block
DFSTestUtil.CreateFile(fs, fileName, DefaultBlockSize, ReplicationFactor, r.NextLong
());
DFSTestUtil.WaitReplication(fs, fileName, ReplicationFactor);
// get all datanodes
IPEndPoint addr = new IPEndPoint("localhost", cluster.GetNameNodePort());
DFSClient client = new DFSClient(addr, Conf);
IList <LocatedBlock> locatedBlocks = client.GetNamenode().GetBlockLocations("/tmp.txt"
, 0, DefaultBlockSize).GetLocatedBlocks();
NUnit.Framework.Assert.AreEqual(1, locatedBlocks.Count);
LocatedBlock block = locatedBlocks[0];
DatanodeInfo[] oldNodes = block.GetLocations();
NUnit.Framework.Assert.AreEqual(oldNodes.Length, 3);
ExtendedBlock b = block.GetBlock();
// add a fourth datanode to the cluster
cluster.StartDataNodes(Conf, 1, true, null, NewRacks);
cluster.WaitActive();
DatanodeInfo[] datanodes = client.DatanodeReport(HdfsConstants.DatanodeReportType
.All);
// find out the new node
DatanodeInfo newNode = null;
foreach (DatanodeInfo node in datanodes)
{
bool isNewNode = true;
foreach (DatanodeInfo oldNode in oldNodes)
{
if (node.Equals(oldNode))
{
isNewNode = false;
break;
}
}
if (isNewNode)
{
newNode = node;
break;
}
}
NUnit.Framework.Assert.IsTrue(newNode != null);
DatanodeInfo source = null;
AList <DatanodeInfo> proxies = new AList <DatanodeInfo>(2);
foreach (DatanodeInfo node_1 in datanodes)
{
if (node_1 != newNode)
{
if (node_1.GetNetworkLocation().Equals(newNode.GetNetworkLocation()))
{
source = node_1;
}
else
{
proxies.AddItem(node_1);
}
}
}
//current state: the newNode is on RACK2, and "source" is the other dn on RACK2.
//the two datanodes on RACK0 and RACK1 are in "proxies".
//"source" and both "proxies" all contain the block, while newNode doesn't yet.
NUnit.Framework.Assert.IsTrue(source != null && proxies.Count == 2);
// start to replace the block
// case 1: proxySource does not contain the block
Log.Info("Testcase 1: Proxy " + newNode + " does not contain the block " + b);
NUnit.Framework.Assert.IsFalse(ReplaceBlock(b, source, newNode, proxies[0]));
// case 2: destination already contains the block
Log.Info("Testcase 2: Destination " + proxies[1] + " contains the block " + b);
NUnit.Framework.Assert.IsFalse(ReplaceBlock(b, source, proxies[0], proxies[1]));
// case 3: correct case
Log.Info("Testcase 3: Source=" + source + " Proxy=" + proxies[0] + " Destination="
+ newNode);
NUnit.Framework.Assert.IsTrue(ReplaceBlock(b, source, proxies[0], newNode));
// after cluster has time to resolve the over-replication,
// block locations should contain two proxies and newNode
// but not source
CheckBlocks(new DatanodeInfo[] { newNode, proxies[0], proxies[1] }, fileName.ToString
(), DefaultBlockSize, ReplicationFactor, client);
// case 4: proxies.get(0) is not a valid del hint
// expect either source or newNode replica to be deleted instead
Log.Info("Testcase 4: invalid del hint " + proxies[0]);
NUnit.Framework.Assert.IsTrue(ReplaceBlock(b, proxies[0], proxies[1], source));
// after cluster has time to resolve the over-replication,
// block locations should contain two proxies,
// and either source or newNode, but not both.
CheckBlocks(Sharpen.Collections.ToArray(proxies, new DatanodeInfo[proxies.Count])
, fileName.ToString(), DefaultBlockSize, ReplicationFactor, client);
}
finally
{
cluster.Shutdown();
}
}
public virtual void TestDecommissionStatus()
{
IPEndPoint addr = new IPEndPoint("localhost", cluster.GetNameNodePort());
DFSClient client = new DFSClient(addr, conf);
DatanodeInfo[] info = client.DatanodeReport(HdfsConstants.DatanodeReportType.Live
);
NUnit.Framework.Assert.AreEqual("Number of Datanodes ", 2, info.Length);
DistributedFileSystem fileSys = cluster.GetFileSystem();
DFSAdmin admin = new DFSAdmin(cluster.GetConfiguration(0));
short replicas = numDatanodes;
//
// Decommission one node. Verify the decommission status
//
Path file1 = new Path("decommission.dat");
WriteFile(fileSys, file1, replicas);
Path file2 = new Path("decommission1.dat");
FSDataOutputStream st1 = WriteIncompleteFile(fileSys, file2, replicas);
foreach (DataNode d in cluster.GetDataNodes())
{
DataNodeTestUtils.TriggerBlockReport(d);
}
FSNamesystem fsn = cluster.GetNamesystem();
DatanodeManager dm = fsn.GetBlockManager().GetDatanodeManager();
for (int iteration = 0; iteration < numDatanodes; iteration++)
{
string downnode = DecommissionNode(fsn, client, localFileSys, iteration);
dm.RefreshNodes(conf);
decommissionedNodes.AddItem(downnode);
BlockManagerTestUtil.RecheckDecommissionState(dm);
IList <DatanodeDescriptor> decommissioningNodes = dm.GetDecommissioningNodes();
if (iteration == 0)
{
NUnit.Framework.Assert.AreEqual(decommissioningNodes.Count, 1);
DatanodeDescriptor decommNode = decommissioningNodes[0];
CheckDecommissionStatus(decommNode, 3, 0, 1);
CheckDFSAdminDecommissionStatus(decommissioningNodes.SubList(0, 1), fileSys, admin
);
}
else
{
NUnit.Framework.Assert.AreEqual(decommissioningNodes.Count, 2);
DatanodeDescriptor decommNode1 = decommissioningNodes[0];
DatanodeDescriptor decommNode2 = decommissioningNodes[1];
// This one is still 3,3,1 since it passed over the UC block
// earlier, before node 2 was decommed
CheckDecommissionStatus(decommNode1, 3, 3, 1);
// This one is 4,4,2 since it has the full state
CheckDecommissionStatus(decommNode2, 4, 4, 2);
CheckDFSAdminDecommissionStatus(decommissioningNodes.SubList(0, 2), fileSys, admin
);
}
}
// Call refreshNodes on FSNamesystem with empty exclude file.
// This will remove the datanodes from decommissioning list and
// make them available again.
WriteConfigFile(localFileSys, excludeFile, null);
dm.RefreshNodes(conf);
st1.Close();
CleanupFile(fileSys, file1);
CleanupFile(fileSys, file2);
}
public virtual void TestTimes()
{
Configuration conf = new HdfsConfiguration();
int MaxIdleTime = 2000;
// 2s
conf.SetInt("ipc.client.connection.maxidletime", MaxIdleTime);
conf.SetInt(DFSConfigKeys.DfsNamenodeHeartbeatRecheckIntervalKey, 1000);
conf.SetInt(DFSConfigKeys.DfsHeartbeatIntervalKey, 1);
MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).NumDataNodes(numDatanodes
).Build();
cluster.WaitActive();
int nnport = cluster.GetNameNodePort();
IPEndPoint addr = new IPEndPoint("localhost", cluster.GetNameNodePort());
DFSClient client = new DFSClient(addr, conf);
DatanodeInfo[] info = client.DatanodeReport(HdfsConstants.DatanodeReportType.Live
);
NUnit.Framework.Assert.AreEqual("Number of Datanodes ", numDatanodes, info.Length
);
FileSystem fileSys = cluster.GetFileSystem();
int replicas = 1;
NUnit.Framework.Assert.IsTrue(fileSys is DistributedFileSystem);
try
{
//
// create file and record atime/mtime
//
System.Console.Out.WriteLine("Creating testdir1 and testdir1/test1.dat.");
Path dir1 = new Path("testdir1");
Path file1 = new Path(dir1, "test1.dat");
FSDataOutputStream stm = WriteFile(fileSys, file1, replicas);
FileStatus stat = fileSys.GetFileStatus(file1);
long atimeBeforeClose = stat.GetAccessTime();
string adate = dateForm.Format(Sharpen.Extensions.CreateDate(atimeBeforeClose));
System.Console.Out.WriteLine("atime on " + file1 + " before close is " + adate +
" (" + atimeBeforeClose + ")");
NUnit.Framework.Assert.IsTrue(atimeBeforeClose != 0);
stm.Close();
stat = fileSys.GetFileStatus(file1);
long atime1 = stat.GetAccessTime();
long mtime1 = stat.GetModificationTime();
adate = dateForm.Format(Sharpen.Extensions.CreateDate(atime1));
string mdate = dateForm.Format(Sharpen.Extensions.CreateDate(mtime1));
System.Console.Out.WriteLine("atime on " + file1 + " is " + adate + " (" + atime1
+ ")");
System.Console.Out.WriteLine("mtime on " + file1 + " is " + mdate + " (" + mtime1
+ ")");
NUnit.Framework.Assert.IsTrue(atime1 != 0);
//
// record dir times
//
stat = fileSys.GetFileStatus(dir1);
long mdir1 = stat.GetAccessTime();
NUnit.Framework.Assert.IsTrue(mdir1 == 0);
// set the access time to be one day in the past
long atime2 = atime1 - (24L * 3600L * 1000L);
fileSys.SetTimes(file1, -1, atime2);
// check new access time on file
stat = fileSys.GetFileStatus(file1);
long atime3 = stat.GetAccessTime();
string adate3 = dateForm.Format(Sharpen.Extensions.CreateDate(atime3));
System.Console.Out.WriteLine("new atime on " + file1 + " is " + adate3 + " (" + atime3
+ ")");
NUnit.Framework.Assert.IsTrue(atime2 == atime3);
NUnit.Framework.Assert.IsTrue(mtime1 == stat.GetModificationTime());
// set the modification time to be 1 hour in the past
long mtime2 = mtime1 - (3600L * 1000L);
fileSys.SetTimes(file1, mtime2, -1);
// check new modification time on file
stat = fileSys.GetFileStatus(file1);
long mtime3 = stat.GetModificationTime();
string mdate3 = dateForm.Format(Sharpen.Extensions.CreateDate(mtime3));
System.Console.Out.WriteLine("new mtime on " + file1 + " is " + mdate3 + " (" + mtime3
+ ")");
NUnit.Framework.Assert.IsTrue(atime2 == stat.GetAccessTime());
NUnit.Framework.Assert.IsTrue(mtime2 == mtime3);
long mtime4 = Time.Now() - (3600L * 1000L);
long atime4 = Time.Now();
fileSys.SetTimes(dir1, mtime4, atime4);
// check new modification time on file
stat = fileSys.GetFileStatus(dir1);
NUnit.Framework.Assert.IsTrue("Not matching the modification times", mtime4 == stat
.GetModificationTime());
NUnit.Framework.Assert.IsTrue("Not matching the access times", atime4 == stat.GetAccessTime
());
Path nonExistingDir = new Path(dir1, "/nonExistingDir/");
try
{
fileSys.SetTimes(nonExistingDir, mtime4, atime4);
NUnit.Framework.Assert.Fail("Expecting FileNotFoundException");
}
catch (FileNotFoundException e)
{
NUnit.Framework.Assert.IsTrue(e.Message.Contains("File/Directory " + nonExistingDir
.ToString() + " does not exist."));
}
// shutdown cluster and restart
cluster.Shutdown();
try
{
Sharpen.Thread.Sleep(2 * MaxIdleTime);
}
catch (Exception)
{
}
cluster = new MiniDFSCluster.Builder(conf).NameNodePort(nnport).Format(false).Build
();
cluster.WaitActive();
fileSys = cluster.GetFileSystem();
// verify that access times and modification times persist after a
// cluster restart.
System.Console.Out.WriteLine("Verifying times after cluster restart");
stat = fileSys.GetFileStatus(file1);
NUnit.Framework.Assert.IsTrue(atime2 == stat.GetAccessTime());
NUnit.Framework.Assert.IsTrue(mtime3 == stat.GetModificationTime());
CleanupFile(fileSys, file1);
CleanupFile(fileSys, dir1);
}
catch (IOException e)
{
info = client.DatanodeReport(HdfsConstants.DatanodeReportType.All);
PrintDatanodeReport(info);
throw;
}
finally
{
fileSys.Close();
cluster.Shutdown();
}
}
public virtual void TestTimesAtClose()
{
Configuration conf = new HdfsConfiguration();
int MaxIdleTime = 2000;
// 2s
int replicas = 1;
// parameter initialization
conf.SetInt("ipc.client.connection.maxidletime", MaxIdleTime);
conf.SetInt(DFSConfigKeys.DfsNamenodeHeartbeatRecheckIntervalKey, 1000);
conf.SetInt(DFSConfigKeys.DfsHeartbeatIntervalKey, 1);
conf.SetInt(DFSConfigKeys.DfsDatanodeHandlerCountKey, 50);
MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).NumDataNodes(numDatanodes
).Build();
cluster.WaitActive();
IPEndPoint addr = new IPEndPoint("localhost", cluster.GetNameNodePort());
DFSClient client = new DFSClient(addr, conf);
DatanodeInfo[] info = client.DatanodeReport(HdfsConstants.DatanodeReportType.Live
);
NUnit.Framework.Assert.AreEqual("Number of Datanodes ", numDatanodes, info.Length
);
FileSystem fileSys = cluster.GetFileSystem();
NUnit.Framework.Assert.IsTrue(fileSys is DistributedFileSystem);
try
{
// create a new file and write to it
Path file1 = new Path("/simple.dat");
FSDataOutputStream stm = WriteFile(fileSys, file1, replicas);
System.Console.Out.WriteLine("Created and wrote file simple.dat");
FileStatus statBeforeClose = fileSys.GetFileStatus(file1);
long mtimeBeforeClose = statBeforeClose.GetModificationTime();
string mdateBeforeClose = dateForm.Format(Sharpen.Extensions.CreateDate(mtimeBeforeClose
));
System.Console.Out.WriteLine("mtime on " + file1 + " before close is " + mdateBeforeClose
+ " (" + mtimeBeforeClose + ")");
NUnit.Framework.Assert.IsTrue(mtimeBeforeClose != 0);
//close file after writing
stm.Close();
System.Console.Out.WriteLine("Closed file.");
FileStatus statAfterClose = fileSys.GetFileStatus(file1);
long mtimeAfterClose = statAfterClose.GetModificationTime();
string mdateAfterClose = dateForm.Format(Sharpen.Extensions.CreateDate(mtimeAfterClose
));
System.Console.Out.WriteLine("mtime on " + file1 + " after close is " + mdateAfterClose
+ " (" + mtimeAfterClose + ")");
NUnit.Framework.Assert.IsTrue(mtimeAfterClose != 0);
NUnit.Framework.Assert.IsTrue(mtimeBeforeClose != mtimeAfterClose);
CleanupFile(fileSys, file1);
}
catch (IOException e)
{
info = client.DatanodeReport(HdfsConstants.DatanodeReportType.All);
PrintDatanodeReport(info);
throw;
}
finally
{
fileSys.Close();
cluster.Shutdown();
}
}
public virtual void TestModTime()
{
Configuration conf = new HdfsConfiguration();
MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).NumDataNodes(numDatanodes
).Build();
cluster.WaitActive();
IPEndPoint addr = new IPEndPoint("localhost", cluster.GetNameNodePort());
DFSClient client = new DFSClient(addr, conf);
DatanodeInfo[] info = client.DatanodeReport(HdfsConstants.DatanodeReportType.Live
);
NUnit.Framework.Assert.AreEqual("Number of Datanodes ", numDatanodes, info.Length
);
FileSystem fileSys = cluster.GetFileSystem();
int replicas = numDatanodes - 1;
NUnit.Framework.Assert.IsTrue(fileSys is DistributedFileSystem);
try
{
//
// create file and record ctime and mtime of test file
//
System.Console.Out.WriteLine("Creating testdir1 and testdir1/test1.dat.");
Path dir1 = new Path("testdir1");
Path file1 = new Path(dir1, "test1.dat");
WriteFile(fileSys, file1, replicas);
FileStatus stat = fileSys.GetFileStatus(file1);
long mtime1 = stat.GetModificationTime();
NUnit.Framework.Assert.IsTrue(mtime1 != 0);
//
// record dir times
//
stat = fileSys.GetFileStatus(dir1);
long mdir1 = stat.GetModificationTime();
//
// create second test file
//
System.Console.Out.WriteLine("Creating testdir1/test2.dat.");
Path file2 = new Path(dir1, "test2.dat");
WriteFile(fileSys, file2, replicas);
stat = fileSys.GetFileStatus(file2);
//
// verify that mod time of dir remains the same
// as before. modification time of directory has increased.
//
stat = fileSys.GetFileStatus(dir1);
NUnit.Framework.Assert.IsTrue(stat.GetModificationTime() >= mdir1);
mdir1 = stat.GetModificationTime();
//
// create another directory
//
Path dir2 = fileSys.MakeQualified(new Path("testdir2/"));
System.Console.Out.WriteLine("Creating testdir2 " + dir2);
NUnit.Framework.Assert.IsTrue(fileSys.Mkdirs(dir2));
stat = fileSys.GetFileStatus(dir2);
long mdir2 = stat.GetModificationTime();
//
// rename file1 from testdir into testdir2
//
Path newfile = new Path(dir2, "testnew.dat");
System.Console.Out.WriteLine("Moving " + file1 + " to " + newfile);
fileSys.Rename(file1, newfile);
//
// verify that modification time of file1 did not change.
//
stat = fileSys.GetFileStatus(newfile);
NUnit.Framework.Assert.IsTrue(stat.GetModificationTime() == mtime1);
//
// verify that modification time of testdir1 and testdir2
// were changed.
//
stat = fileSys.GetFileStatus(dir1);
NUnit.Framework.Assert.IsTrue(stat.GetModificationTime() != mdir1);
mdir1 = stat.GetModificationTime();
stat = fileSys.GetFileStatus(dir2);
NUnit.Framework.Assert.IsTrue(stat.GetModificationTime() != mdir2);
mdir2 = stat.GetModificationTime();
//
// delete newfile
//
System.Console.Out.WriteLine("Deleting testdir2/testnew.dat.");
NUnit.Framework.Assert.IsTrue(fileSys.Delete(newfile, true));
//
// verify that modification time of testdir1 has not changed.
//
stat = fileSys.GetFileStatus(dir1);
NUnit.Framework.Assert.IsTrue(stat.GetModificationTime() == mdir1);
//
// verify that modification time of testdir2 has changed.
//
stat = fileSys.GetFileStatus(dir2);
NUnit.Framework.Assert.IsTrue(stat.GetModificationTime() != mdir2);
mdir2 = stat.GetModificationTime();
CleanupFile(fileSys, file2);
CleanupFile(fileSys, dir1);
CleanupFile(fileSys, dir2);
}
catch (IOException e)
{
info = client.DatanodeReport(HdfsConstants.DatanodeReportType.All);
PrintDatanodeReport(info);
throw;
}
finally
{
fileSys.Close();
cluster.Shutdown();
}
}
