/// <summary>Test that a full block report is sent after hot swapping volumes</summary>
/// <exception cref="System.IO.IOException"/>
/// <exception cref="Org.Apache.Hadoop.Conf.ReconfigurationException"/>
public virtual void TestFullBlockReportAfterRemovingVolumes()
{
Configuration conf = new Configuration();
conf.SetLong(DFSConfigKeys.DfsBlockSizeKey, BlockSize);
// Similar to TestTriggerBlockReport, set a really long value for
// dfs.heartbeat.interval, so that incremental block reports and heartbeats
// won't be sent during this test unless they're triggered
// manually.
conf.SetLong(DFSConfigKeys.DfsBlockreportIntervalMsecKey, 10800000L);
conf.SetLong(DFSConfigKeys.DfsHeartbeatIntervalKey, 1080L);
cluster = new MiniDFSCluster.Builder(conf).NumDataNodes(2).Build();
cluster.WaitActive();
DataNode dn = cluster.GetDataNodes()[0];
DatanodeProtocolClientSideTranslatorPB spy = DataNodeTestUtils.SpyOnBposToNN(dn,
cluster.GetNameNode());
// Remove a data dir from datanode
FilePath dataDirToKeep = new FilePath(cluster.GetDataDirectory(), "data1");
dn.ReconfigurePropertyImpl(DFSConfigKeys.DfsDatanodeDataDirKey, dataDirToKeep.ToString
());
// We should get 1 full report
Org.Mockito.Mockito.Verify(spy, Org.Mockito.Mockito.Timeout(60000).Times(1)).BlockReport
(Matchers.Any <DatanodeRegistration>(), Matchers.AnyString(), Matchers.Any <StorageBlockReport
[]>(), Matchers.Any <BlockReportContext>());
}
public virtual void TestStorageReportHasStorageTypeAndState()
{
// Make sure we are not testing with the default type, that would not
// be a very good test.
NUnit.Framework.Assert.AreNotSame(storageType, StorageType.Default);
NameNode nn = cluster.GetNameNode();
DataNode dn = cluster.GetDataNodes()[0];
// Insert a spy object for the NN RPC.
DatanodeProtocolClientSideTranslatorPB nnSpy = DataNodeTestUtils.SpyOnBposToNN(dn
, nn);
// Trigger a heartbeat so there is an interaction with the spy
// object.
DataNodeTestUtils.TriggerHeartbeat(dn);
// Verify that the callback passed in the expected parameters.
ArgumentCaptor <StorageReport[]> captor = ArgumentCaptor.ForClass <StorageReport[]>
();
Org.Mockito.Mockito.Verify(nnSpy).SendHeartbeat(Matchers.Any <DatanodeRegistration
>(), captor.Capture(), Matchers.AnyLong(), Matchers.AnyLong(), Matchers.AnyInt()
, Matchers.AnyInt(), Matchers.AnyInt(), Org.Mockito.Mockito.Any <VolumeFailureSummary
>());
StorageReport[] reports = captor.GetValue();
foreach (StorageReport report in reports)
{
Assert.AssertThat(report.GetStorage().GetStorageType(), IS.Is(storageType));
Assert.AssertThat(report.GetStorage().GetState(), IS.Is(DatanodeStorage.State.Normal
));
}
}
/// <summary>
/// Verify that
/// <see cref="DataNode#checkDiskErrors()"/>
/// removes all metadata in
/// DataNode upon a volume failure. Thus we can run reconfig on the same
/// configuration to reload the new volume on the same directory as the failed one.
/// </summary>
/// <exception cref="System.IO.IOException"/>
/// <exception cref="Sharpen.TimeoutException"/>
/// <exception cref="System.Exception"/>
/// <exception cref="Org.Apache.Hadoop.Conf.ReconfigurationException"/>
public virtual void TestDirectlyReloadAfterCheckDiskError()
{
StartDFSCluster(1, 2);
CreateFile(new Path("/test"), 32, (short)2);
DataNode dn = cluster.GetDataNodes()[0];
string oldDataDir = dn.GetConf().Get(DFSConfigKeys.DfsDatanodeDataDirKey);
FilePath dirToFail = new FilePath(cluster.GetDataDirectory(), "data1");
FsVolumeImpl failedVolume = GetVolume(dn, dirToFail);
NUnit.Framework.Assert.IsTrue("No FsVolume was found for " + dirToFail, failedVolume
!= null);
long used = failedVolume.GetDfsUsed();
DataNodeTestUtils.InjectDataDirFailure(dirToFail);
// Call and wait DataNode to detect disk failure.
long lastDiskErrorCheck = dn.GetLastDiskErrorCheck();
dn.CheckDiskErrorAsync();
while (dn.GetLastDiskErrorCheck() == lastDiskErrorCheck)
{
Sharpen.Thread.Sleep(100);
}
CreateFile(new Path("/test1"), 32, (short)2);
NUnit.Framework.Assert.AreEqual(used, failedVolume.GetDfsUsed());
DataNodeTestUtils.RestoreDataDirFromFailure(dirToFail);
dn.ReconfigurePropertyImpl(DFSConfigKeys.DfsDatanodeDataDirKey, oldDataDir);
CreateFile(new Path("/test2"), 32, (short)2);
FsVolumeImpl restoredVolume = GetVolume(dn, dirToFail);
NUnit.Framework.Assert.IsTrue(restoredVolume != null);
NUnit.Framework.Assert.IsTrue(restoredVolume != failedVolume);
// More data has been written to this volume.
NUnit.Framework.Assert.IsTrue(restoredVolume.GetDfsUsed() > used);
}
public virtual void TestUnderReplicationAfterVolFailure()
{
// This test relies on denying access to data volumes to simulate data volume
// failure. This doesn't work on Windows, because an owner of an object
// always has the ability to read and change permissions on the object.
Assume.AssumeTrue(!Path.Windows);
// Bring up one more datanode
cluster.StartDataNodes(conf, 1, true, null, null);
cluster.WaitActive();
BlockManager bm = cluster.GetNamesystem().GetBlockManager();
Path file1 = new Path("/test1");
DFSTestUtil.CreateFile(fs, file1, 1024, (short)3, 1L);
DFSTestUtil.WaitReplication(fs, file1, (short)3);
// Fail the first volume on both datanodes
FilePath dn1Vol1 = new FilePath(dataDir, "data" + (2 * 0 + 1));
FilePath dn2Vol1 = new FilePath(dataDir, "data" + (2 * 1 + 1));
DataNodeTestUtils.InjectDataDirFailure(dn1Vol1, dn2Vol1);
Path file2 = new Path("/test2");
DFSTestUtil.CreateFile(fs, file2, 1024, (short)3, 1L);
DFSTestUtil.WaitReplication(fs, file2, (short)3);
// underReplicatedBlocks are due to failed volumes
int underReplicatedBlocks = BlockManagerTestUtil.CheckHeartbeatAndGetUnderReplicatedBlocksCount
(cluster.GetNamesystem(), bm);
NUnit.Framework.Assert.IsTrue("There is no under replicated block after volume failure"
, underReplicatedBlocks > 0);
}
public virtual void TestConfigureMinValidVolumes()
{
Assume.AssumeTrue(!Runtime.GetProperty("os.name").StartsWith("Windows"));
// Bring up two additional datanodes that need both of their volumes
// functioning in order to stay up.
conf.SetInt(DFSConfigKeys.DfsDatanodeFailedVolumesToleratedKey, 0);
cluster.StartDataNodes(conf, 2, true, null, null);
cluster.WaitActive();
DatanodeManager dm = cluster.GetNamesystem().GetBlockManager().GetDatanodeManager
();
long origCapacity = DFSTestUtil.GetLiveDatanodeCapacity(dm);
long dnCapacity = DFSTestUtil.GetDatanodeCapacity(dm, 0);
// Fail a volume on the 2nd DN
FilePath dn2Vol1 = new FilePath(dataDir, "data" + (2 * 1 + 1));
DataNodeTestUtils.InjectDataDirFailure(dn2Vol1);
// Should only get two replicas (the first DN and the 3rd)
Path file1 = new Path("/test1");
DFSTestUtil.CreateFile(fs, file1, 1024, (short)3, 1L);
DFSTestUtil.WaitReplication(fs, file1, (short)2);
// Check that this single failure caused a DN to die.
DFSTestUtil.WaitForDatanodeStatus(dm, 2, 1, 0, origCapacity - (1 * dnCapacity), WaitForHeartbeats
);
// If we restore the volume we should still only be able to get
// two replicas since the DN is still considered dead.
DataNodeTestUtils.RestoreDataDirFromFailure(dn2Vol1);
Path file2 = new Path("/test2");
DFSTestUtil.CreateFile(fs, file2, 1024, (short)3, 1L);
DFSTestUtil.WaitReplication(fs, file2, (short)2);
}
/// <summary>Ensure that a delayed IBR is generated for a block deleted on the DN.</summary>
/// <exception cref="System.Exception"/>
/// <exception cref="System.IO.IOException"/>
public virtual void TestReportBlockDeleted()
{
try
{
// Trigger a block report to reset the IBR timer.
DataNodeTestUtils.TriggerBlockReport(singletonDn);
// Spy on calls from the DN to the NN
DatanodeProtocolClientSideTranslatorPB nnSpy = SpyOnDnCallsToNn();
InjectBlockDeleted();
// Sleep for a very short time since IBR is generated
// asynchronously.
Sharpen.Thread.Sleep(2000);
// Ensure that no block report was generated immediately.
// Deleted blocks are reported when the IBR timer elapses.
Org.Mockito.Mockito.Verify(nnSpy, Org.Mockito.Mockito.Times(0)).BlockReceivedAndDeleted
(Matchers.Any <DatanodeRegistration>(), Matchers.AnyString(), Matchers.Any <StorageReceivedDeletedBlocks
[]>());
// Trigger a block report, this also triggers an IBR.
DataNodeTestUtils.TriggerBlockReport(singletonDn);
Sharpen.Thread.Sleep(2000);
// Ensure that the deleted block is reported.
Org.Mockito.Mockito.Verify(nnSpy, Org.Mockito.Mockito.Times(1)).BlockReceivedAndDeleted
(Matchers.Any <DatanodeRegistration>(), Matchers.AnyString(), Matchers.Any <StorageReceivedDeletedBlocks
[]>());
}
finally
{
cluster.Shutdown();
cluster = null;
}
}
// return the initial state of the configuration
/// <summary>
/// Test for the case where one of the DNs in the pipeline is in the
/// process of doing a block report exactly when the block is closed.
/// </summary>
/// <remarks>
/// Test for the case where one of the DNs in the pipeline is in the
/// process of doing a block report exactly when the block is closed.
/// In this case, the block report becomes delayed until after the
/// block is marked completed on the NN, and hence it reports an RBW
/// replica for a COMPLETE block. Such a report should not be marked
/// corrupt.
/// This is a regression test for HDFS-2791.
/// </remarks>
/// <exception cref="System.Exception"/>
public virtual void TestOneReplicaRbwReportArrivesAfterBlockCompleted()
{
CountDownLatch brFinished = new CountDownLatch(1);
GenericTestUtils.DelayAnswer delayer = new _DelayAnswer_579(brFinished, Log);
// inform the test that our block report went through.
string MethodName = GenericTestUtils.GetMethodName();
Path filePath = new Path("/" + MethodName + ".dat");
// Start a second DN for this test -- we're checking
// what happens when one of the DNs is slowed for some reason.
ReplFactor = 2;
StartDNandWait(null, false);
NameNode nn = cluster.GetNameNode();
FSDataOutputStream @out = fs.Create(filePath, ReplFactor);
try
{
AppendTestUtil.Write(@out, 0, 10);
@out.Hflush();
// Set up a spy so that we can delay the block report coming
// from this node.
DataNode dn = cluster.GetDataNodes()[0];
DatanodeProtocolClientSideTranslatorPB spy = DataNodeTestUtils.SpyOnBposToNN(dn,
nn);
Org.Mockito.Mockito.DoAnswer(delayer).When(spy).BlockReport(Org.Mockito.Mockito.AnyObject
<DatanodeRegistration>(), Org.Mockito.Mockito.AnyString(), Org.Mockito.Mockito.AnyObject
<StorageBlockReport[]>(), Org.Mockito.Mockito.AnyObject <BlockReportContext>());
// Force a block report to be generated. The block report will have
// an RBW replica in it. Wait for the RPC to be sent, but block
// it before it gets to the NN.
dn.ScheduleAllBlockReport(0);
delayer.WaitForCall();
}
finally
{
IOUtils.CloseStream(@out);
}
// Now that the stream is closed, the NN will have the block in COMPLETE
// state.
delayer.Proceed();
brFinished.Await();
// Verify that no replicas are marked corrupt, and that the
// file is still readable.
BlockManagerTestUtil.UpdateState(nn.GetNamesystem().GetBlockManager());
NUnit.Framework.Assert.AreEqual(0, nn.GetNamesystem().GetCorruptReplicaBlocks());
DFSTestUtil.ReadFile(fs, filePath);
// Ensure that the file is readable even from the DN that we futzed with.
cluster.StopDataNode(1);
DFSTestUtil.ReadFile(fs, filePath);
}
public virtual void TestMultipleVolFailuresOnNode()
{
// Reinitialize the cluster, configured with 4 storage locations per DataNode
// and tolerating up to 2 failures.
TearDown();
InitCluster(3, 4, 2);
// Calculate the total capacity of all the datanodes. Sleep for three seconds
// to be sure the datanodes have had a chance to heartbeat their capacities.
Sharpen.Thread.Sleep(WaitForHeartbeats);
DatanodeManager dm = cluster.GetNamesystem().GetBlockManager().GetDatanodeManager
();
long origCapacity = DFSTestUtil.GetLiveDatanodeCapacity(dm);
long dnCapacity = DFSTestUtil.GetDatanodeCapacity(dm, 0);
FilePath dn1Vol1 = new FilePath(dataDir, "data" + (4 * 0 + 1));
FilePath dn1Vol2 = new FilePath(dataDir, "data" + (4 * 0 + 2));
FilePath dn2Vol1 = new FilePath(dataDir, "data" + (4 * 1 + 1));
FilePath dn2Vol2 = new FilePath(dataDir, "data" + (4 * 1 + 2));
// Make the first two volume directories on the first two datanodes
// non-accessible.
DataNodeTestUtils.InjectDataDirFailure(dn1Vol1, dn1Vol2, dn2Vol1, dn2Vol2);
// Create file1 and wait for 3 replicas (ie all DNs can still store a block).
// Then assert that all DNs are up, despite the volume failures.
Path file1 = new Path("/test1");
DFSTestUtil.CreateFile(fs, file1, 1024, (short)3, 1L);
DFSTestUtil.WaitReplication(fs, file1, (short)3);
AList <DataNode> dns = cluster.GetDataNodes();
NUnit.Framework.Assert.IsTrue("DN1 should be up", dns[0].IsDatanodeUp());
NUnit.Framework.Assert.IsTrue("DN2 should be up", dns[1].IsDatanodeUp());
NUnit.Framework.Assert.IsTrue("DN3 should be up", dns[2].IsDatanodeUp());
CheckFailuresAtDataNode(dns[0], 1, true, dn1Vol1.GetAbsolutePath(), dn1Vol2.GetAbsolutePath
());
CheckFailuresAtDataNode(dns[1], 1, true, dn2Vol1.GetAbsolutePath(), dn2Vol2.GetAbsolutePath
());
CheckFailuresAtDataNode(dns[2], 0, true);
// Ensure we wait a sufficient amount of time
System.Diagnostics.Debug.Assert((WaitForHeartbeats * 10) > WaitForDeath);
// Eventually the NN should report four volume failures
DFSTestUtil.WaitForDatanodeStatus(dm, 3, 0, 4, origCapacity - (1 * dnCapacity), WaitForHeartbeats
);
CheckAggregateFailuresAtNameNode(true, 4);
CheckFailuresAtNameNode(dm, dns[0], true, dn1Vol1.GetAbsolutePath(), dn1Vol2.GetAbsolutePath
());
CheckFailuresAtNameNode(dm, dns[1], true, dn2Vol1.GetAbsolutePath(), dn2Vol2.GetAbsolutePath
());
CheckFailuresAtNameNode(dm, dns[2], true);
}
public virtual void SetUp()
{
conf = new HdfsConfiguration();
conf.SetLong(DFSConfigKeys.DfsNamenodePathBasedCacheRefreshIntervalMs, 100);
conf.SetLong(DFSConfigKeys.DfsCachereportIntervalMsecKey, 500);
conf.SetLong(DFSConfigKeys.DfsBlockSizeKey, BlockSize);
conf.SetLong(DFSConfigKeys.DfsDatanodeMaxLockedMemoryKey, CacheCapacity);
conf.SetLong(DFSConfigKeys.DfsHeartbeatIntervalKey, 1);
prevCacheManipulator = NativeIO.POSIX.GetCacheManipulator();
NativeIO.POSIX.SetCacheManipulator(new NativeIO.POSIX.NoMlockCacheManipulator());
cluster = new MiniDFSCluster.Builder(conf).NumDataNodes(1).Build();
cluster.WaitActive();
fs = cluster.GetFileSystem();
nn = cluster.GetNameNode();
fsImage = nn.GetFSImage();
dn = cluster.GetDataNodes()[0];
fsd = dn.GetFSDataset();
spyNN = DataNodeTestUtils.SpyOnBposToNN(dn, nn);
}
public virtual void TestValidVolumesAtStartup()
{
Assume.AssumeTrue(!Runtime.GetProperty("os.name").StartsWith("Windows"));
// Make sure no DNs are running.
cluster.ShutdownDataNodes();
// Bring up a datanode with two default data dirs, but with one bad one.
conf.SetInt(DFSConfigKeys.DfsDatanodeFailedVolumesToleratedKey, 1);
// We use subdirectories 0 and 1 in order to have only a single
// data dir's parent inject a failure.
FilePath tld = new FilePath(MiniDFSCluster.GetBaseDirectory(), "badData");
FilePath dataDir1 = new FilePath(tld, "data1");
FilePath dataDir1Actual = new FilePath(dataDir1, "1");
dataDir1Actual.Mkdirs();
// Force an IOE to occur on one of the dfs.data.dir.
FilePath dataDir2 = new FilePath(tld, "data2");
PrepareDirToFail(dataDir2);
FilePath dataDir2Actual = new FilePath(dataDir2, "2");
// Start one DN, with manually managed DN dir
conf.Set(DFSConfigKeys.DfsDatanodeDataDirKey, dataDir1Actual.GetPath() + "," + dataDir2Actual
.GetPath());
cluster.StartDataNodes(conf, 1, false, null, null);
cluster.WaitActive();
try
{
NUnit.Framework.Assert.IsTrue("The DN should have started up fine.", cluster.IsDataNodeUp
());
DataNode dn = cluster.GetDataNodes()[0];
string si = DataNodeTestUtils.GetFSDataset(dn).GetStorageInfo();
NUnit.Framework.Assert.IsTrue("The DN should have started with this directory", si
.Contains(dataDir1Actual.GetPath()));
NUnit.Framework.Assert.IsFalse("The DN shouldn't have a bad directory.", si.Contains
(dataDir2Actual.GetPath()));
}
finally
{
cluster.ShutdownDataNodes();
FileUtil.Chmod(dataDir2.ToString(), "755");
}
}
/// <summary>
/// Verify that the DataNode sends a single incremental block report for all
/// storages.
/// </summary>
/// <exception cref="System.IO.IOException"/>
/// <exception cref="System.Exception"/>
public virtual void TestDataNodeDoesNotSplitReports()
{
LocatedBlocks blocks = CreateFileGetBlocks(GenericTestUtils.GetMethodName());
Assert.AssertThat(cluster.GetDataNodes().Count, IS.Is(1));
// Remove all blocks from the DataNode.
foreach (LocatedBlock block in blocks.GetLocatedBlocks())
{
dn0.NotifyNamenodeDeletedBlock(block.GetBlock(), block.GetStorageIDs()[0]);
}
Log.Info("Triggering report after deleting blocks");
long ops = MetricsAsserts.GetLongCounter("BlockReceivedAndDeletedOps", MetricsAsserts.GetMetrics
(NnMetrics));
// Trigger a report to the NameNode and give it a few seconds.
DataNodeTestUtils.TriggerBlockReport(dn0);
Sharpen.Thread.Sleep(5000);
// Ensure that NameNodeRpcServer.blockReceivedAndDeletes is invoked
// exactly once after we triggered the report.
MetricsAsserts.AssertCounter("BlockReceivedAndDeletedOps", ops + 1, MetricsAsserts.GetMetrics
(NnMetrics));
}
/// <exception cref="System.Exception"/>
public virtual void TestDeleteBlockOnTransientStorage()
{
cluster = new MiniDFSCluster.Builder(Conf).StorageTypes(new StorageType[] { StorageType
.RamDisk, StorageType.Default }).NumDataNodes(1).Build();
try
{
cluster.WaitActive();
bpid = cluster.GetNamesystem().GetBlockPoolId();
DataNode dataNode = cluster.GetDataNodes()[0];
fds = DataNodeTestUtils.GetFSDataset(cluster.GetDataNodes()[0]);
client = cluster.GetFileSystem().GetClient();
scanner = new DirectoryScanner(dataNode, fds, Conf);
scanner.SetRetainDiffs(true);
FsDatasetTestUtil.StopLazyWriter(cluster.GetDataNodes()[0]);
// Create a file file on RAM_DISK
IList <LocatedBlock> blocks = CreateFile(GenericTestUtils.GetMethodName(), BlockLength
, true);
// Ensure no difference between volumeMap and disk.
Scan(1, 0, 0, 0, 0, 0);
// Make a copy of the block on DEFAULT storage and ensure that it is
// picked up by the scanner.
DuplicateBlock(blocks[0].GetBlock().GetBlockId());
Scan(2, 1, 0, 0, 0, 0, 1);
// Ensure that the copy on RAM_DISK was deleted.
VerifyStorageType(blocks[0].GetBlock().GetBlockId(), false);
Scan(1, 0, 0, 0, 0, 0);
}
finally
{
if (scanner != null)
{
scanner.Shutdown();
scanner = null;
}
cluster.Shutdown();
cluster = null;
}
}
/// <summary>
/// Test that if splitThreshold is zero, then we always get a separate
/// call per storage.
/// </summary>
/// <exception cref="System.IO.IOException"/>
/// <exception cref="System.Exception"/>
public virtual void TestAlwaysSplit()
{
StartUpCluster(0);
NameNode nn = cluster.GetNameNode();
DataNode dn = cluster.GetDataNodes()[0];
// Create a file with a few blocks.
CreateFile(GenericTestUtils.GetMethodName(), BlocksInFile);
// Insert a spy object for the NN RPC.
DatanodeProtocolClientSideTranslatorPB nnSpy = DataNodeTestUtils.SpyOnBposToNN(dn
, nn);
// Trigger a block report so there is an interaction with the spy
// object.
DataNodeTestUtils.TriggerBlockReport(dn);
ArgumentCaptor <StorageBlockReport[]> captor = ArgumentCaptor.ForClass <StorageBlockReport
[]>();
Org.Mockito.Mockito.Verify(nnSpy, Org.Mockito.Mockito.Times(cluster.GetStoragesPerDatanode
())).BlockReport(Matchers.Any <DatanodeRegistration>(), Matchers.AnyString(), captor
.Capture(), Org.Mockito.Mockito.AnyObject <BlockReportContext>());
VerifyCapturedArguments(captor, 1, BlocksInFile);
}
public virtual void TestVolFailureStatsPreservedOnNNRestart()
{
// Bring up two more datanodes that can tolerate 1 failure
cluster.StartDataNodes(conf, 2, true, null, null);
cluster.WaitActive();
DatanodeManager dm = cluster.GetNamesystem().GetBlockManager().GetDatanodeManager
();
long origCapacity = DFSTestUtil.GetLiveDatanodeCapacity(dm);
long dnCapacity = DFSTestUtil.GetDatanodeCapacity(dm, 0);
// Fail the first volume on both datanodes (we have to keep the
// third healthy so one node in the pipeline will not fail).
FilePath dn1Vol1 = new FilePath(dataDir, "data" + (2 * 0 + 1));
FilePath dn2Vol1 = new FilePath(dataDir, "data" + (2 * 1 + 1));
DataNodeTestUtils.InjectDataDirFailure(dn1Vol1, dn2Vol1);
Path file1 = new Path("/test1");
DFSTestUtil.CreateFile(fs, file1, 1024, (short)2, 1L);
DFSTestUtil.WaitReplication(fs, file1, (short)2);
AList <DataNode> dns = cluster.GetDataNodes();
// The NN reports two volumes failures
DFSTestUtil.WaitForDatanodeStatus(dm, 3, 0, 2, origCapacity - (1 * dnCapacity), WaitForHeartbeats
);
CheckAggregateFailuresAtNameNode(true, 2);
CheckFailuresAtNameNode(dm, dns[0], true, dn1Vol1.GetAbsolutePath());
CheckFailuresAtNameNode(dm, dns[1], true, dn2Vol1.GetAbsolutePath());
// After restarting the NN it still see the two failures
cluster.RestartNameNode(0);
cluster.WaitActive();
DFSTestUtil.WaitForDatanodeStatus(dm, 3, 0, 2, origCapacity - (1 * dnCapacity), WaitForHeartbeats
);
CheckAggregateFailuresAtNameNode(true, 2);
CheckFailuresAtNameNode(dm, dns[0], true, dn1Vol1.GetAbsolutePath());
CheckFailuresAtNameNode(dm, dns[1], true, dn2Vol1.GetAbsolutePath());
}
/// <summary>Spy on calls from the DN to the NN.</summary>
/// <returns>spy object that can be used for Mockito verification.</returns>
internal virtual DatanodeProtocolClientSideTranslatorPB SpyOnDnCallsToNn()
{
return(DataNodeTestUtils.SpyOnBposToNN(singletonDn, singletonNn));
}
/// <exception cref="System.IO.IOException"/>
private void WaitForTempReplica(Block bl, int DnN1)
{
bool tooLongWait = false;
int Timeout = 40000;
if (Log.IsDebugEnabled())
{
Log.Debug("Wait for datanode " + DnN1 + " to appear");
}
while (cluster.GetDataNodes().Count <= DnN1)
{
WaitTil(20);
}
if (Log.IsDebugEnabled())
{
Log.Debug("Total number of DNs " + cluster.GetDataNodes().Count);
}
cluster.WaitActive();
// Look about specified DN for the replica of the block from 1st DN
DataNode dn1 = cluster.GetDataNodes()[DnN1];
string bpid = cluster.GetNamesystem().GetBlockPoolId();
Replica r = DataNodeTestUtils.FetchReplicaInfo(dn1, bpid, bl.GetBlockId());
long start = Time.MonotonicNow();
int count = 0;
while (r == null)
{
WaitTil(5);
r = DataNodeTestUtils.FetchReplicaInfo(dn1, bpid, bl.GetBlockId());
long waiting_period = Time.MonotonicNow() - start;
if (count++ % 100 == 0)
{
if (Log.IsDebugEnabled())
{
Log.Debug("Has been waiting for " + waiting_period + " ms.");
}
}
if (waiting_period > Timeout)
{
NUnit.Framework.Assert.IsTrue("Was waiting too long to get ReplicaInfo from a datanode"
, tooLongWait);
}
}
HdfsServerConstants.ReplicaState state = r.GetState();
if (Log.IsDebugEnabled())
{
Log.Debug("Replica state before the loop " + state.GetValue());
}
start = Time.MonotonicNow();
while (state != HdfsServerConstants.ReplicaState.Temporary)
{
WaitTil(5);
state = r.GetState();
if (Log.IsDebugEnabled())
{
Log.Debug("Keep waiting for " + bl.GetBlockName() + " is in state " + state.GetValue
());
}
if (Time.MonotonicNow() - start > Timeout)
{
NUnit.Framework.Assert.IsTrue("Was waiting too long for a replica to become TEMPORARY"
, tooLongWait);
}
}
if (Log.IsDebugEnabled())
{
Log.Debug("Replica state after the loop " + state.GetValue());
}
}
/// <summary>
/// Test that DataStorage and BlockPoolSliceStorage remove the failed volume
/// after failure.
/// </summary>
/// <exception cref="System.Exception"/>
/// <exception cref="System.IO.IOException"/>
/// <exception cref="Sharpen.TimeoutException"/>
public virtual void TestFailedVolumeBeingRemovedFromDataNode()
{
Path file1 = new Path("/test1");
DFSTestUtil.CreateFile(fs, file1, 1024, (short)2, 1L);
DFSTestUtil.WaitReplication(fs, file1, (short)2);
FilePath dn0Vol1 = new FilePath(dataDir, "data" + (2 * 0 + 1));
DataNodeTestUtils.InjectDataDirFailure(dn0Vol1);
DataNode dn0 = cluster.GetDataNodes()[0];
long lastDiskErrorCheck = dn0.GetLastDiskErrorCheck();
dn0.CheckDiskErrorAsync();
// Wait checkDiskError thread finish to discover volume failure.
while (dn0.GetLastDiskErrorCheck() == lastDiskErrorCheck)
{
Sharpen.Thread.Sleep(100);
}
// Verify dn0Vol1 has been completely removed from DN0.
// 1. dn0Vol1 is removed from DataStorage.
DataStorage storage = dn0.GetStorage();
NUnit.Framework.Assert.AreEqual(1, storage.GetNumStorageDirs());
for (int i = 0; i < storage.GetNumStorageDirs(); i++)
{
Storage.StorageDirectory sd = storage.GetStorageDir(i);
NUnit.Framework.Assert.IsFalse(sd.GetRoot().GetAbsolutePath().StartsWith(dn0Vol1.
GetAbsolutePath()));
}
string bpid = cluster.GetNamesystem().GetBlockPoolId();
BlockPoolSliceStorage bpsStorage = storage.GetBPStorage(bpid);
NUnit.Framework.Assert.AreEqual(1, bpsStorage.GetNumStorageDirs());
for (int i_1 = 0; i_1 < bpsStorage.GetNumStorageDirs(); i_1++)
{
Storage.StorageDirectory sd = bpsStorage.GetStorageDir(i_1);
NUnit.Framework.Assert.IsFalse(sd.GetRoot().GetAbsolutePath().StartsWith(dn0Vol1.
GetAbsolutePath()));
}
// 2. dn0Vol1 is removed from FsDataset
FsDatasetSpi <FsVolumeSpi> data = dn0.GetFSDataset();
foreach (FsVolumeSpi volume in data.GetVolumes())
{
Assert.AssertNotEquals(new FilePath(volume.GetBasePath()).GetAbsoluteFile(), dn0Vol1
.GetAbsoluteFile());
}
// 3. all blocks on dn0Vol1 have been removed.
foreach (ReplicaInfo replica in FsDatasetTestUtil.GetReplicas(data, bpid))
{
NUnit.Framework.Assert.IsNotNull(replica.GetVolume());
Assert.AssertNotEquals(new FilePath(replica.GetVolume().GetBasePath()).GetAbsoluteFile
(), dn0Vol1.GetAbsoluteFile());
}
// 4. dn0Vol1 is not in DN0's configuration and dataDirs anymore.
string[] dataDirStrs = dn0.GetConf().Get(DFSConfigKeys.DfsDatanodeDataDirKey).Split
(",");
NUnit.Framework.Assert.AreEqual(1, dataDirStrs.Length);
NUnit.Framework.Assert.IsFalse(dataDirStrs[0].Contains(dn0Vol1.GetAbsolutePath())
);
}
public virtual void TestSuccessiveVolumeFailures()
{
// Bring up two more datanodes
cluster.StartDataNodes(conf, 2, true, null, null);
cluster.WaitActive();
/*
* Calculate the total capacity of all the datanodes. Sleep for
* three seconds to be sure the datanodes have had a chance to
* heartbeat their capacities.
*/
Sharpen.Thread.Sleep(WaitForHeartbeats);
DatanodeManager dm = cluster.GetNamesystem().GetBlockManager().GetDatanodeManager
();
long origCapacity = DFSTestUtil.GetLiveDatanodeCapacity(dm);
long dnCapacity = DFSTestUtil.GetDatanodeCapacity(dm, 0);
FilePath dn1Vol1 = new FilePath(dataDir, "data" + (2 * 0 + 1));
FilePath dn2Vol1 = new FilePath(dataDir, "data" + (2 * 1 + 1));
FilePath dn3Vol1 = new FilePath(dataDir, "data" + (2 * 2 + 1));
FilePath dn3Vol2 = new FilePath(dataDir, "data" + (2 * 2 + 2));
/*
* Make the 1st volume directories on the first two datanodes
* non-accessible. We don't make all three 1st volume directories
* readonly since that would cause the entire pipeline to
* fail. The client does not retry failed nodes even though
* perhaps they could succeed because just a single volume failed.
*/
DataNodeTestUtils.InjectDataDirFailure(dn1Vol1, dn2Vol1);
/*
* Create file1 and wait for 3 replicas (ie all DNs can still
* store a block). Then assert that all DNs are up, despite the
* volume failures.
*/
Path file1 = new Path("/test1");
DFSTestUtil.CreateFile(fs, file1, 1024, (short)3, 1L);
DFSTestUtil.WaitReplication(fs, file1, (short)3);
AList <DataNode> dns = cluster.GetDataNodes();
NUnit.Framework.Assert.IsTrue("DN1 should be up", dns[0].IsDatanodeUp());
NUnit.Framework.Assert.IsTrue("DN2 should be up", dns[1].IsDatanodeUp());
NUnit.Framework.Assert.IsTrue("DN3 should be up", dns[2].IsDatanodeUp());
/*
* The metrics should confirm the volume failures.
*/
CheckFailuresAtDataNode(dns[0], 1, true, dn1Vol1.GetAbsolutePath());
CheckFailuresAtDataNode(dns[1], 1, true, dn2Vol1.GetAbsolutePath());
CheckFailuresAtDataNode(dns[2], 0, true);
// Ensure we wait a sufficient amount of time
System.Diagnostics.Debug.Assert((WaitForHeartbeats * 10) > WaitForDeath);
// Eventually the NN should report two volume failures
DFSTestUtil.WaitForDatanodeStatus(dm, 3, 0, 2, origCapacity - (1 * dnCapacity), WaitForHeartbeats
);
CheckAggregateFailuresAtNameNode(true, 2);
CheckFailuresAtNameNode(dm, dns[0], true, dn1Vol1.GetAbsolutePath());
CheckFailuresAtNameNode(dm, dns[1], true, dn2Vol1.GetAbsolutePath());
CheckFailuresAtNameNode(dm, dns[2], true);
/*
* Now fail a volume on the third datanode. We should be able to get
* three replicas since we've already identified the other failures.
*/
DataNodeTestUtils.InjectDataDirFailure(dn3Vol1);
Path file2 = new Path("/test2");
DFSTestUtil.CreateFile(fs, file2, 1024, (short)3, 1L);
DFSTestUtil.WaitReplication(fs, file2, (short)3);
NUnit.Framework.Assert.IsTrue("DN3 should still be up", dns[2].IsDatanodeUp());
CheckFailuresAtDataNode(dns[2], 1, true, dn3Vol1.GetAbsolutePath());
DataNodeTestUtils.TriggerHeartbeat(dns[2]);
CheckFailuresAtNameNode(dm, dns[2], true, dn3Vol1.GetAbsolutePath());
/*
* Once the datanodes have a chance to heartbeat their new capacity the
* total capacity should be down by three volumes (assuming the host
* did not grow or shrink the data volume while the test was running).
*/
dnCapacity = DFSTestUtil.GetDatanodeCapacity(dm, 0);
DFSTestUtil.WaitForDatanodeStatus(dm, 3, 0, 3, origCapacity - (3 * dnCapacity), WaitForHeartbeats
);
CheckAggregateFailuresAtNameNode(true, 3);
CheckFailuresAtNameNode(dm, dns[0], true, dn1Vol1.GetAbsolutePath());
CheckFailuresAtNameNode(dm, dns[1], true, dn2Vol1.GetAbsolutePath());
CheckFailuresAtNameNode(dm, dns[2], true, dn3Vol1.GetAbsolutePath());
/*
* Now fail the 2nd volume on the 3rd datanode. All its volumes
* are now failed and so it should report two volume failures
* and that it's no longer up. Only wait for two replicas since
* we'll never get a third.
*/
DataNodeTestUtils.InjectDataDirFailure(dn3Vol2);
Path file3 = new Path("/test3");
DFSTestUtil.CreateFile(fs, file3, 1024, (short)3, 1L);
DFSTestUtil.WaitReplication(fs, file3, (short)2);
// The DN should consider itself dead
DFSTestUtil.WaitForDatanodeDeath(dns[2]);
// And report two failed volumes
CheckFailuresAtDataNode(dns[2], 2, true, dn3Vol1.GetAbsolutePath(), dn3Vol2.GetAbsolutePath
());
// The NN considers the DN dead
DFSTestUtil.WaitForDatanodeStatus(dm, 2, 1, 2, origCapacity - (4 * dnCapacity), WaitForHeartbeats
);
CheckAggregateFailuresAtNameNode(true, 2);
CheckFailuresAtNameNode(dm, dns[0], true, dn1Vol1.GetAbsolutePath());
CheckFailuresAtNameNode(dm, dns[1], true, dn2Vol1.GetAbsolutePath());
/*
* The datanode never tries to restore the failed volume, even if
* it's subsequently repaired, but it should see this volume on
* restart, so file creation should be able to succeed after
* restoring the data directories and restarting the datanodes.
*/
DataNodeTestUtils.RestoreDataDirFromFailure(dn1Vol1, dn2Vol1, dn3Vol1, dn3Vol2);
cluster.RestartDataNodes();
cluster.WaitActive();
Path file4 = new Path("/test4");
DFSTestUtil.CreateFile(fs, file4, 1024, (short)3, 1L);
DFSTestUtil.WaitReplication(fs, file4, (short)3);
/*
* Eventually the capacity should be restored to its original value,
* and that the volume failure count should be reported as zero by
* both the metrics and the NN.
*/
DFSTestUtil.WaitForDatanodeStatus(dm, 3, 0, 0, origCapacity, WaitForHeartbeats);
CheckAggregateFailuresAtNameNode(true, 0);
dns = cluster.GetDataNodes();
CheckFailuresAtNameNode(dm, dns[0], true);
CheckFailuresAtNameNode(dm, dns[1], true);
CheckFailuresAtNameNode(dm, dns[2], true);
}
public virtual void TestDataNodeReconfigureWithVolumeFailures()
{
// Bring up two more datanodes
cluster.StartDataNodes(conf, 2, true, null, null);
cluster.WaitActive();
DatanodeManager dm = cluster.GetNamesystem().GetBlockManager().GetDatanodeManager
();
long origCapacity = DFSTestUtil.GetLiveDatanodeCapacity(dm);
long dnCapacity = DFSTestUtil.GetDatanodeCapacity(dm, 0);
// Fail the first volume on both datanodes (we have to keep the
// third healthy so one node in the pipeline will not fail).
FilePath dn1Vol1 = new FilePath(dataDir, "data" + (2 * 0 + 1));
FilePath dn1Vol2 = new FilePath(dataDir, "data" + (2 * 0 + 2));
FilePath dn2Vol1 = new FilePath(dataDir, "data" + (2 * 1 + 1));
FilePath dn2Vol2 = new FilePath(dataDir, "data" + (2 * 1 + 2));
DataNodeTestUtils.InjectDataDirFailure(dn1Vol1);
DataNodeTestUtils.InjectDataDirFailure(dn2Vol1);
Path file1 = new Path("/test1");
DFSTestUtil.CreateFile(fs, file1, 1024, (short)2, 1L);
DFSTestUtil.WaitReplication(fs, file1, (short)2);
AList <DataNode> dns = cluster.GetDataNodes();
NUnit.Framework.Assert.IsTrue("DN1 should be up", dns[0].IsDatanodeUp());
NUnit.Framework.Assert.IsTrue("DN2 should be up", dns[1].IsDatanodeUp());
NUnit.Framework.Assert.IsTrue("DN3 should be up", dns[2].IsDatanodeUp());
CheckFailuresAtDataNode(dns[0], 1, true, dn1Vol1.GetAbsolutePath());
CheckFailuresAtDataNode(dns[1], 1, true, dn2Vol1.GetAbsolutePath());
CheckFailuresAtDataNode(dns[2], 0, true);
// Ensure we wait a sufficient amount of time
System.Diagnostics.Debug.Assert((WaitForHeartbeats * 10) > WaitForDeath);
// The NN reports two volume failures
DFSTestUtil.WaitForDatanodeStatus(dm, 3, 0, 2, origCapacity - (1 * dnCapacity), WaitForHeartbeats
);
CheckAggregateFailuresAtNameNode(true, 2);
CheckFailuresAtNameNode(dm, dns[0], true, dn1Vol1.GetAbsolutePath());
CheckFailuresAtNameNode(dm, dns[1], true, dn2Vol1.GetAbsolutePath());
// Reconfigure again to try to add back the failed volumes.
ReconfigureDataNode(dns[0], dn1Vol1, dn1Vol2);
ReconfigureDataNode(dns[1], dn2Vol1, dn2Vol2);
DataNodeTestUtils.TriggerHeartbeat(dns[0]);
DataNodeTestUtils.TriggerHeartbeat(dns[1]);
CheckFailuresAtDataNode(dns[0], 1, false, dn1Vol1.GetAbsolutePath());
CheckFailuresAtDataNode(dns[1], 1, false, dn2Vol1.GetAbsolutePath());
// Ensure we wait a sufficient amount of time.
System.Diagnostics.Debug.Assert((WaitForHeartbeats * 10) > WaitForDeath);
// The NN reports two volume failures again.
DFSTestUtil.WaitForDatanodeStatus(dm, 3, 0, 2, origCapacity - (1 * dnCapacity), WaitForHeartbeats
);
CheckAggregateFailuresAtNameNode(false, 2);
CheckFailuresAtNameNode(dm, dns[0], false, dn1Vol1.GetAbsolutePath());
CheckFailuresAtNameNode(dm, dns[1], false, dn2Vol1.GetAbsolutePath());
// Reconfigure a third time with the failed volumes. Afterwards, we expect
// the same volume failures to be reported. (No double-counting.)
ReconfigureDataNode(dns[0], dn1Vol1, dn1Vol2);
ReconfigureDataNode(dns[1], dn2Vol1, dn2Vol2);
DataNodeTestUtils.TriggerHeartbeat(dns[0]);
DataNodeTestUtils.TriggerHeartbeat(dns[1]);
CheckFailuresAtDataNode(dns[0], 1, false, dn1Vol1.GetAbsolutePath());
CheckFailuresAtDataNode(dns[1], 1, false, dn2Vol1.GetAbsolutePath());
// Ensure we wait a sufficient amount of time.
System.Diagnostics.Debug.Assert((WaitForHeartbeats * 10) > WaitForDeath);
// The NN reports two volume failures again.
DFSTestUtil.WaitForDatanodeStatus(dm, 3, 0, 2, origCapacity - (1 * dnCapacity), WaitForHeartbeats
);
CheckAggregateFailuresAtNameNode(false, 2);
CheckFailuresAtNameNode(dm, dns[0], false, dn1Vol1.GetAbsolutePath());
CheckFailuresAtNameNode(dm, dns[1], false, dn2Vol1.GetAbsolutePath());
// Replace failed volume with healthy volume and run reconfigure DataNode.
// The failed volume information should be cleared.
DataNodeTestUtils.RestoreDataDirFromFailure(dn1Vol1, dn2Vol1);
ReconfigureDataNode(dns[0], dn1Vol1, dn1Vol2);
ReconfigureDataNode(dns[1], dn2Vol1, dn2Vol2);
DataNodeTestUtils.TriggerHeartbeat(dns[0]);
DataNodeTestUtils.TriggerHeartbeat(dns[1]);
CheckFailuresAtDataNode(dns[0], 1, true);
CheckFailuresAtDataNode(dns[1], 1, true);
DFSTestUtil.WaitForDatanodeStatus(dm, 3, 0, 0, origCapacity, WaitForHeartbeats);
CheckAggregateFailuresAtNameNode(true, 0);
CheckFailuresAtNameNode(dm, dns[0], true);
CheckFailuresAtNameNode(dm, dns[1], true);
}
/// <summary>Force the DataNode to report missing blocks immediately.</summary>
/// <exception cref="System.IO.IOException"/>
private static void TriggerDeleteReport(DataNode datanode)
{
datanode.ScheduleAllBlockReport(0);
DataNodeTestUtils.TriggerDeletionReport(datanode);
}
/// <summary>Test write a file, verifies and closes it.</summary>
/// <remarks>
/// Test write a file, verifies and closes it. Then a couple of random blocks
/// is removed and BlockReport is forced; the FSNamesystem is pushed to
/// recalculate required DN's activities such as replications and so on.
/// The number of missing and under-replicated blocks should be the same in
/// case of a single-DN cluster.
/// </remarks>
/// <exception cref="System.IO.IOException">in case of errors</exception>
public virtual void BlockReport_02()
{
string MethodName = GenericTestUtils.GetMethodName();
Log.Info("Running test " + MethodName);
Path filePath = new Path("/" + MethodName + ".dat");
DFSTestUtil.CreateFile(fs, filePath, FileSize, ReplFactor, rand.NextLong());
// mock around with newly created blocks and delete some
FilePath dataDir = new FilePath(cluster.GetDataDirectory());
NUnit.Framework.Assert.IsTrue(dataDir.IsDirectory());
IList <ExtendedBlock> blocks2Remove = new AList <ExtendedBlock>();
IList <int> removedIndex = new AList <int>();
IList <LocatedBlock> lBlocks = cluster.GetNameNodeRpc().GetBlockLocations(filePath
.ToString(), FileStart, FileSize).GetLocatedBlocks();
while (removedIndex.Count != 2)
{
int newRemoveIndex = rand.Next(lBlocks.Count);
if (!removedIndex.Contains(newRemoveIndex))
{
removedIndex.AddItem(newRemoveIndex);
}
}
foreach (int aRemovedIndex in removedIndex)
{
blocks2Remove.AddItem(lBlocks[aRemovedIndex].GetBlock());
}
if (Log.IsDebugEnabled())
{
Log.Debug("Number of blocks allocated " + lBlocks.Count);
}
DataNode dn0 = cluster.GetDataNodes()[DnN0];
foreach (ExtendedBlock b in blocks2Remove)
{
if (Log.IsDebugEnabled())
{
Log.Debug("Removing the block " + b.GetBlockName());
}
foreach (FilePath f in FindAllFiles(dataDir, new BlockReportTestBase.MyFileFilter
(this, b.GetBlockName(), true)))
{
DataNodeTestUtils.GetFSDataset(dn0).UnfinalizeBlock(b);
if (!f.Delete())
{
Log.Warn("Couldn't delete " + b.GetBlockName());
}
else
{
Log.Debug("Deleted file " + f.ToString());
}
}
}
WaitTil(TimeUnit.Seconds.ToMillis(DnRescanExtraWait));
// all blocks belong to the same file, hence same BP
string poolId = cluster.GetNamesystem().GetBlockPoolId();
DatanodeRegistration dnR = dn0.GetDNRegistrationForBP(poolId);
StorageBlockReport[] reports = GetBlockReports(dn0, poolId, false, false);
SendBlockReports(dnR, poolId, reports);
BlockManagerTestUtil.GetComputedDatanodeWork(cluster.GetNamesystem().GetBlockManager
());
PrintStats();
NUnit.Framework.Assert.AreEqual("Wrong number of MissingBlocks is found", blocks2Remove
.Count, cluster.GetNamesystem().GetMissingBlocksCount());
NUnit.Framework.Assert.AreEqual("Wrong number of UnderReplicatedBlocks is found",
blocks2Remove.Count, cluster.GetNamesystem().GetUnderReplicatedBlocks());
}
/// <exception cref="System.Exception"/>
private void TestTriggerBlockReport(bool incremental)
{
Configuration conf = new HdfsConfiguration();
// Set a really long value for dfs.blockreport.intervalMsec and
// dfs.heartbeat.interval, so that incremental block reports and heartbeats
// won't be sent during this test unless they're triggered
// manually.
conf.SetLong(DFSConfigKeys.DfsBlockreportIntervalMsecKey, 10800000L);
conf.SetLong(DFSConfigKeys.DfsHeartbeatIntervalKey, 1080L);
MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).NumDataNodes(1).Build();
cluster.WaitActive();
FileSystem fs = cluster.GetFileSystem();
DatanodeProtocolClientSideTranslatorPB spy = DataNodeTestUtils.SpyOnBposToNN(cluster
.GetDataNodes()[0], cluster.GetNameNode());
DFSTestUtil.CreateFile(fs, new Path("/abc"), 16, (short)1, 1L);
// We should get 1 incremental block report.
Org.Mockito.Mockito.Verify(spy, Org.Mockito.Mockito.Timeout(60000).Times(1)).BlockReceivedAndDeleted
(Matchers.Any <DatanodeRegistration>(), Matchers.AnyString(), Matchers.Any <StorageReceivedDeletedBlocks
[]>());
// We should not receive any more incremental or incremental block reports,
// since the interval we configured is so long.
for (int i = 0; i < 3; i++)
{
Sharpen.Thread.Sleep(10);
Org.Mockito.Mockito.Verify(spy, Org.Mockito.Mockito.Times(0)).BlockReport(Matchers.Any
<DatanodeRegistration>(), Matchers.AnyString(), Matchers.Any <StorageBlockReport[]
>(), Org.Mockito.Mockito.AnyObject <BlockReportContext>());
Org.Mockito.Mockito.Verify(spy, Org.Mockito.Mockito.Times(1)).BlockReceivedAndDeleted
(Matchers.Any <DatanodeRegistration>(), Matchers.AnyString(), Matchers.Any <StorageReceivedDeletedBlocks
[]>());
}
// Create a fake block deletion notification on the DataNode.
// This will be sent with the next incremental block report.
ReceivedDeletedBlockInfo rdbi = new ReceivedDeletedBlockInfo(new Block(5678, 512,
1000), ReceivedDeletedBlockInfo.BlockStatus.DeletedBlock, null);
DataNode datanode = cluster.GetDataNodes()[0];
BPServiceActor actor = datanode.GetAllBpOs()[0].GetBPServiceActors()[0];
string storageUuid = datanode.GetFSDataset().GetVolumes()[0].GetStorageID();
actor.NotifyNamenodeDeletedBlock(rdbi, storageUuid);
// Manually trigger a block report.
datanode.TriggerBlockReport(new BlockReportOptions.Factory().SetIncremental(incremental
).Build());
// triggerBlockReport returns before the block report is
// actually sent. Wait for it to be sent here.
if (incremental)
{
Org.Mockito.Mockito.Verify(spy, Org.Mockito.Mockito.Timeout(60000).Times(2)).BlockReceivedAndDeleted
(Matchers.Any <DatanodeRegistration>(), Matchers.AnyString(), Matchers.Any <StorageReceivedDeletedBlocks
[]>());
}
else
{
Org.Mockito.Mockito.Verify(spy, Org.Mockito.Mockito.Timeout(60000)).BlockReport(Matchers.Any
<DatanodeRegistration>(), Matchers.AnyString(), Matchers.Any <StorageBlockReport[]
>(), Org.Mockito.Mockito.AnyObject <BlockReportContext>());
}
cluster.Shutdown();
}
public virtual void TestDeletedBlockWhenAddBlockIsInEdit()
{
Configuration conf = new HdfsConfiguration();
cluster = new MiniDFSCluster.Builder(conf).NnTopology(MiniDFSNNTopology.SimpleHATopology
()).NumDataNodes(1).Build();
DFSClient client = null;
try
{
cluster.WaitActive();
NUnit.Framework.Assert.AreEqual("Number of namenodes is not 2", 2, cluster.GetNumNameNodes
());
// Transitioning the namenode 0 to active.
cluster.TransitionToActive(0);
NUnit.Framework.Assert.IsTrue("Namenode 0 should be in active state", cluster.GetNameNode
(0).IsActiveState());
NUnit.Framework.Assert.IsTrue("Namenode 1 should be in standby state", cluster.GetNameNode
(1).IsStandbyState());
// Trigger heartbeat to mark DatanodeStorageInfo#heartbeatedSinceFailover
// to true.
DataNodeTestUtils.TriggerHeartbeat(cluster.GetDataNodes()[0]);
FileSystem fs = cluster.GetFileSystem(0);
// Trigger blockReport to mark DatanodeStorageInfo#blockContentsStale
// to false.
cluster.GetDataNodes()[0].TriggerBlockReport(new BlockReportOptions.Factory().SetIncremental
(false).Build());
Path fileName = new Path("/tmp.txt");
// create a file with one block
DFSTestUtil.CreateFile(fs, fileName, 10L, (short)1, 1234L);
DFSTestUtil.WaitReplication(fs, fileName, (short)1);
client = new DFSClient(cluster.GetFileSystem(0).GetUri(), conf);
IList <LocatedBlock> locatedBlocks = client.GetNamenode().GetBlockLocations("/tmp.txt"
, 0, 10L).GetLocatedBlocks();
NUnit.Framework.Assert.IsTrue(locatedBlocks.Count == 1);
NUnit.Framework.Assert.IsTrue(locatedBlocks[0].GetLocations().Length == 1);
// add a second datanode to the cluster
cluster.StartDataNodes(conf, 1, true, null, null, null, null);
NUnit.Framework.Assert.AreEqual("Number of datanodes should be 2", 2, cluster.GetDataNodes
().Count);
DataNode dn0 = cluster.GetDataNodes()[0];
DataNode dn1 = cluster.GetDataNodes()[1];
string activeNNBPId = cluster.GetNamesystem(0).GetBlockPoolId();
DatanodeDescriptor sourceDnDesc = NameNodeAdapter.GetDatanode(cluster.GetNamesystem
(0), dn0.GetDNRegistrationForBP(activeNNBPId));
DatanodeDescriptor destDnDesc = NameNodeAdapter.GetDatanode(cluster.GetNamesystem
(0), dn1.GetDNRegistrationForBP(activeNNBPId));
ExtendedBlock block = DFSTestUtil.GetFirstBlock(fs, fileName);
Log.Info("replaceBlock: " + ReplaceBlock(block, (DatanodeInfo)sourceDnDesc, (DatanodeInfo
)sourceDnDesc, (DatanodeInfo)destDnDesc));
// Waiting for the FsDatasetAsyncDsikService to delete the block
Sharpen.Thread.Sleep(3000);
// Triggering the incremental block report to report the deleted block to
// namnemode
cluster.GetDataNodes()[0].TriggerBlockReport(new BlockReportOptions.Factory().SetIncremental
(true).Build());
cluster.TransitionToStandby(0);
cluster.TransitionToActive(1);
NUnit.Framework.Assert.IsTrue("Namenode 1 should be in active state", cluster.GetNameNode
(1).IsActiveState());
NUnit.Framework.Assert.IsTrue("Namenode 0 should be in standby state", cluster.GetNameNode
(0).IsStandbyState());
client.Close();
// Opening a new client for new active namenode
client = new DFSClient(cluster.GetFileSystem(1).GetUri(), conf);
IList <LocatedBlock> locatedBlocks1 = client.GetNamenode().GetBlockLocations("/tmp.txt"
, 0, 10L).GetLocatedBlocks();
NUnit.Framework.Assert.AreEqual(1, locatedBlocks1.Count);
NUnit.Framework.Assert.AreEqual("The block should be only on 1 datanode ", 1, locatedBlocks1
[0].GetLocations().Length);
}
finally
{
IOUtils.Cleanup(null, client);
cluster.Shutdown();
}
}
/// <exception cref="System.Exception"/>
public virtual void RunTest(int parallelism)
{
cluster = new MiniDFSCluster.Builder(Conf).Build();
try
{
cluster.WaitActive();
bpid = cluster.GetNamesystem().GetBlockPoolId();
fds = DataNodeTestUtils.GetFSDataset(cluster.GetDataNodes()[0]);
client = cluster.GetFileSystem().GetClient();
Conf.SetInt(DFSConfigKeys.DfsDatanodeDirectoryscanThreadsKey, parallelism);
DataNode dataNode = cluster.GetDataNodes()[0];
scanner = new DirectoryScanner(dataNode, fds, Conf);
scanner.SetRetainDiffs(true);
// Add files with 100 blocks
CreateFile(GenericTestUtils.GetMethodName(), BlockLength * 100, false);
long totalBlocks = 100;
// Test1: No difference between volumeMap and disk
Scan(100, 0, 0, 0, 0, 0);
// Test2: block metafile is missing
long blockId = DeleteMetaFile();
Scan(totalBlocks, 1, 1, 0, 0, 1);
VerifyGenStamp(blockId, GenerationStamp.GrandfatherGenerationStamp);
Scan(totalBlocks, 0, 0, 0, 0, 0);
// Test3: block file is missing
blockId = DeleteBlockFile();
Scan(totalBlocks, 1, 0, 1, 0, 0);
totalBlocks--;
VerifyDeletion(blockId);
Scan(totalBlocks, 0, 0, 0, 0, 0);
// Test4: A block file exists for which there is no metafile and
// a block in memory
blockId = CreateBlockFile();
totalBlocks++;
Scan(totalBlocks, 1, 1, 0, 1, 0);
VerifyAddition(blockId, GenerationStamp.GrandfatherGenerationStamp, 0);
Scan(totalBlocks, 0, 0, 0, 0, 0);
// Test5: A metafile exists for which there is no block file and
// a block in memory
blockId = CreateMetaFile();
Scan(totalBlocks + 1, 1, 0, 1, 1, 0);
FilePath metafile = new FilePath(GetMetaFile(blockId));
NUnit.Framework.Assert.IsTrue(!metafile.Exists());
Scan(totalBlocks, 0, 0, 0, 0, 0);
// Test6: A block file and metafile exists for which there is no block in
// memory
blockId = CreateBlockMetaFile();
totalBlocks++;
Scan(totalBlocks, 1, 0, 0, 1, 0);
VerifyAddition(blockId, DefaultGenStamp, 0);
Scan(totalBlocks, 0, 0, 0, 0, 0);
// Test7: Delete bunch of metafiles
for (int i = 0; i < 10; i++)
{
blockId = DeleteMetaFile();
}
Scan(totalBlocks, 10, 10, 0, 0, 10);
Scan(totalBlocks, 0, 0, 0, 0, 0);
// Test8: Delete bunch of block files
for (int i_1 = 0; i_1 < 10; i_1++)
{
blockId = DeleteBlockFile();
}
Scan(totalBlocks, 10, 0, 10, 0, 0);
totalBlocks -= 10;
Scan(totalBlocks, 0, 0, 0, 0, 0);
// Test9: create a bunch of blocks files
for (int i_2 = 0; i_2 < 10; i_2++)
{
blockId = CreateBlockFile();
}
totalBlocks += 10;
Scan(totalBlocks, 10, 10, 0, 10, 0);
Scan(totalBlocks, 0, 0, 0, 0, 0);
// Test10: create a bunch of metafiles
for (int i_3 = 0; i_3 < 10; i_3++)
{
blockId = CreateMetaFile();
}
Scan(totalBlocks + 10, 10, 0, 10, 10, 0);
Scan(totalBlocks, 0, 0, 0, 0, 0);
// Test11: create a bunch block files and meta files
for (int i_4 = 0; i_4 < 10; i_4++)
{
blockId = CreateBlockMetaFile();
}
totalBlocks += 10;
Scan(totalBlocks, 10, 0, 0, 10, 0);
Scan(totalBlocks, 0, 0, 0, 0, 0);
// Test12: truncate block files to test block length mismatch
for (int i_5 = 0; i_5 < 10; i_5++)
{
TruncateBlockFile();
}
Scan(totalBlocks, 10, 0, 0, 0, 10);
Scan(totalBlocks, 0, 0, 0, 0, 0);
// Test13: all the conditions combined
CreateMetaFile();
CreateBlockFile();
CreateBlockMetaFile();
DeleteMetaFile();
DeleteBlockFile();
TruncateBlockFile();
Scan(totalBlocks + 3, 6, 2, 2, 3, 2);
Scan(totalBlocks + 1, 0, 0, 0, 0, 0);
// Test14: validate clean shutdown of DirectoryScanner
////assertTrue(scanner.getRunStatus()); //assumes "real" FSDataset, not sim
scanner.Shutdown();
NUnit.Framework.Assert.IsFalse(scanner.GetRunStatus());
}
finally
{
if (scanner != null)
{
scanner.Shutdown();
scanner = null;
}
cluster.Shutdown();
}
}