/// <exception cref="System.Exception"/>
private void WaitForReplicaAnchorStatus(ShortCircuitCache cache, ExtendedBlock block
, bool expectedIsAnchorable, bool expectedIsAnchored, int expectedOutstandingMmaps
)
{
GenericTestUtils.WaitFor(new _Supplier_683(cache, expectedOutstandingMmaps, block
, expectedIsAnchorable, expectedIsAnchored), 10, 60000);
}
private void UpdateDeletedBlockId(ExtendedBlock block)
{
lock (this)
{
ICollection <long> blockIds = deletedBlockIds[block.GetBlockPoolId()];
if (blockIds == null)
{
blockIds = new HashSet <long>();
deletedBlockIds[block.GetBlockPoolId()] = blockIds;
}
blockIds.AddItem(block.GetBlockId());
numDeletedBlocks++;
if (numDeletedBlocks == MaxDeletedBlocks)
{
foreach (KeyValuePair <string, ICollection <long> > e in deletedBlockIds)
{
string bpid = e.Key;
ICollection <long> bs = e.Value;
fsdatasetImpl.RemoveDeletedBlocks(bpid, bs);
bs.Clear();
}
numDeletedBlocks = 0;
}
}
}
/// <exception cref="System.IO.IOException"/>
private BlockReaderLocalLegacy(DFSClient.Conf conf, string hdfsfile, ExtendedBlock
block, Org.Apache.Hadoop.Security.Token.Token <BlockTokenIdentifier> token, long
startOffset, long length, BlockLocalPathInfo pathinfo, FileInputStream dataIn)
: this(conf, hdfsfile, block, token, startOffset, length, pathinfo, DataChecksum.
NewDataChecksum(DataChecksum.Type.Null, 4), false, dataIn, startOffset, null)
{
}
public virtual void TestUnderReplicatedUsesNewRacks()
{
Configuration conf = GetConf();
short ReplicationFactor = 3;
Path filePath = new Path("/testFile");
// All datanodes are on the same rack
string[] racks = new string[] { "/rack1", "/rack1", "/rack1", "/rack1", "/rack1" };
MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).NumDataNodes(racks.Length
).Racks(racks).Build();
FSNamesystem ns = cluster.GetNameNode().GetNamesystem();
try
{
// Create a file with one block
FileSystem fs = cluster.GetFileSystem();
DFSTestUtil.CreateFile(fs, filePath, 1L, ReplicationFactor, 1L);
ExtendedBlock b = DFSTestUtil.GetFirstBlock(fs, filePath);
DFSTestUtil.WaitForReplication(cluster, b, 1, ReplicationFactor, 0);
// Add new datanodes on a different rack and increase the
// replication factor so the block is underreplicated and make
// sure at least one of the hosts on the new rack is used.
string[] newRacks = new string[] { "/rack2", "/rack2" };
cluster.StartDataNodes(conf, 2, true, null, newRacks);
ReplicationFactor = 5;
NameNodeAdapter.SetReplication(ns, "/testFile", ReplicationFactor);
DFSTestUtil.WaitForReplication(cluster, b, 2, ReplicationFactor, 0);
}
finally
{
cluster.Shutdown();
}
}
/*
* Replace block
*/
/// <exception cref="System.IO.IOException"/>
/// <exception cref="System.Net.Sockets.SocketException"/>
private bool ReplaceBlock(ExtendedBlock block, DatanodeInfo source, DatanodeInfo
sourceProxy, DatanodeInfo destination, StorageType targetStorageType)
{
Socket sock = new Socket();
try
{
sock.Connect(NetUtils.CreateSocketAddr(destination.GetXferAddr()), HdfsServerConstants
.ReadTimeout);
sock.SetKeepAlive(true);
// sendRequest
DataOutputStream @out = new DataOutputStream(sock.GetOutputStream());
new Sender(@out).ReplaceBlock(block, targetStorageType, BlockTokenSecretManager.DummyToken
, source.GetDatanodeUuid(), sourceProxy);
@out.Flush();
// receiveResponse
DataInputStream reply = new DataInputStream(sock.GetInputStream());
DataTransferProtos.BlockOpResponseProto proto = DataTransferProtos.BlockOpResponseProto
.ParseDelimitedFrom(reply);
while (proto.GetStatus() == DataTransferProtos.Status.InProgress)
{
proto = DataTransferProtos.BlockOpResponseProto.ParseDelimitedFrom(reply);
}
return(proto.GetStatus() == DataTransferProtos.Status.Success);
}
finally
{
sock.Close();
}
}
/// <summary>
/// Generate testing environment and return a collection of blocks
/// on which to run the tests.
/// </summary>
/// <param name="bpid">Block pool ID to generate blocks for</param>
/// <param name="dataSet">Namespace in which to insert blocks</param>
/// <returns>Contrived blocks for further testing.</returns>
/// <exception cref="System.IO.IOException"/>
private ExtendedBlock[] Setup(string bpid, FsDatasetImpl dataSet)
{
// setup replicas map
ExtendedBlock[] blocks = new ExtendedBlock[] { new ExtendedBlock(bpid, 1, 1, 2001
), new ExtendedBlock(bpid, 2, 1, 2002), new ExtendedBlock(bpid, 3, 1, 2003), new
ExtendedBlock(bpid, 4, 1, 2004), new ExtendedBlock(bpid, 5, 1, 2005), new ExtendedBlock
(bpid, 6, 1, 2006) };
ReplicaMap replicasMap = dataSet.volumeMap;
FsVolumeImpl vol = (FsVolumeImpl)dataSet.volumes.GetNextVolume(StorageType.Default
, 0).GetVolume();
ReplicaInfo replicaInfo = new FinalizedReplica(blocks[Finalized].GetLocalBlock(),
vol, vol.GetCurrentDir().GetParentFile());
replicasMap.Add(bpid, replicaInfo);
replicaInfo.GetBlockFile().CreateNewFile();
replicaInfo.GetMetaFile().CreateNewFile();
replicasMap.Add(bpid, new ReplicaInPipeline(blocks[Temporary].GetBlockId(), blocks
[Temporary].GetGenerationStamp(), vol, vol.CreateTmpFile(bpid, blocks[Temporary]
.GetLocalBlock()).GetParentFile(), 0));
replicaInfo = new ReplicaBeingWritten(blocks[Rbw].GetLocalBlock(), vol, vol.CreateRbwFile
(bpid, blocks[Rbw].GetLocalBlock()).GetParentFile(), null);
replicasMap.Add(bpid, replicaInfo);
replicaInfo.GetBlockFile().CreateNewFile();
replicaInfo.GetMetaFile().CreateNewFile();
replicasMap.Add(bpid, new ReplicaWaitingToBeRecovered(blocks[Rwr].GetLocalBlock()
, vol, vol.CreateRbwFile(bpid, blocks[Rwr].GetLocalBlock()).GetParentFile()));
replicasMap.Add(bpid, new ReplicaUnderRecovery(new FinalizedReplica(blocks[Rur].GetLocalBlock
(), vol, vol.GetCurrentDir().GetParentFile()), 2007));
return(blocks);
}
public ReportBadBlockAction(ExtendedBlock block, string storageUuid, StorageType
storageType)
{
this.block = block;
this.storageUuid = storageUuid;
this.storageType = storageType;
}
public virtual void TestLocatedBlocks2Locations()
{
DatanodeInfo d = DFSTestUtil.GetLocalDatanodeInfo();
DatanodeInfo[] ds = new DatanodeInfo[1];
ds[0] = d;
// ok
ExtendedBlock b1 = new ExtendedBlock("bpid", 1, 1, 1);
LocatedBlock l1 = new LocatedBlock(b1, ds, 0, false);
// corrupt
ExtendedBlock b2 = new ExtendedBlock("bpid", 2, 1, 1);
LocatedBlock l2 = new LocatedBlock(b2, ds, 0, true);
IList <LocatedBlock> ls = Arrays.AsList(l1, l2);
LocatedBlocks lbs = new LocatedBlocks(10, false, ls, l2, true, null);
BlockLocation[] bs = DFSUtil.LocatedBlocks2Locations(lbs);
NUnit.Framework.Assert.IsTrue("expected 2 blocks but got " + bs.Length, bs.Length
== 2);
int corruptCount = 0;
foreach (BlockLocation b in bs)
{
if (b.IsCorrupt())
{
corruptCount++;
}
}
NUnit.Framework.Assert.IsTrue("expected 1 corrupt files but got " + corruptCount,
corruptCount == 1);
// test an empty location
bs = DFSUtil.LocatedBlocks2Locations(new LocatedBlocks());
NUnit.Framework.Assert.AreEqual(0, bs.Length);
}
public virtual void TestGetMetaData()
{
SimulatedFSDataset fsdataset = GetSimulatedFSDataset();
ExtendedBlock b = new ExtendedBlock(bpid, 1, 5, 0);
try
{
NUnit.Framework.Assert.IsTrue(fsdataset.GetMetaDataInputStream(b) == null);
NUnit.Framework.Assert.IsTrue("Expected an IO exception", false);
}
catch (IOException)
{
}
// ok - as expected
AddSomeBlocks(fsdataset);
// Only need to add one but ....
b = new ExtendedBlock(bpid, 1, 0, 0);
InputStream metaInput = fsdataset.GetMetaDataInputStream(b);
DataInputStream metaDataInput = new DataInputStream(metaInput);
short version = metaDataInput.ReadShort();
NUnit.Framework.Assert.AreEqual(BlockMetadataHeader.Version, version);
DataChecksum checksum = DataChecksum.NewDataChecksum(metaDataInput);
NUnit.Framework.Assert.AreEqual(DataChecksum.Type.Null, checksum.GetChecksumType(
));
NUnit.Framework.Assert.AreEqual(0, checksum.GetChecksumSize());
}
/// <exception cref="System.IO.IOException"/>
private void CorruptBlock(MiniDFSCluster cluster, FileSystem fs, Path fileName, int
dnIndex, ExtendedBlock block)
{
// corrupt the block on datanode dnIndex
// the indexes change once the nodes are restarted.
// But the datadirectory will not change
NUnit.Framework.Assert.IsTrue(cluster.CorruptReplica(dnIndex, block));
MiniDFSCluster.DataNodeProperties dnProps = cluster.StopDataNode(0);
// Each datanode has multiple data dirs, check each
for (int dirIndex = 0; dirIndex < 2; dirIndex++)
{
string bpid = cluster.GetNamesystem().GetBlockPoolId();
FilePath storageDir = cluster.GetStorageDir(dnIndex, dirIndex);
FilePath dataDir = MiniDFSCluster.GetFinalizedDir(storageDir, bpid);
FilePath scanLogFile = new FilePath(dataDir, "dncp_block_verification.log.curr");
if (scanLogFile.Exists())
{
// wait for one minute for deletion to succeed;
for (int i = 0; !scanLogFile.Delete(); i++)
{
NUnit.Framework.Assert.IsTrue("Could not delete log file in one minute", i < 60);
try
{
Sharpen.Thread.Sleep(1000);
}
catch (Exception)
{
}
}
}
}
// restart the detained so the corrupt replica will be detected
cluster.RestartDataNode(dnProps);
}
public virtual void TestSufficientlySingleReplBlockUsesNewRack()
{
Configuration conf = GetConf();
short ReplicationFactor = 1;
Path filePath = new Path("/testFile");
string[] racks = new string[] { "/rack1", "/rack1", "/rack1", "/rack2" };
MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).NumDataNodes(racks.Length
).Racks(racks).Build();
FSNamesystem ns = cluster.GetNameNode().GetNamesystem();
try
{
// Create a file with one block with a replication factor of 1
FileSystem fs = cluster.GetFileSystem();
DFSTestUtil.CreateFile(fs, filePath, 1L, ReplicationFactor, 1L);
ExtendedBlock b = DFSTestUtil.GetFirstBlock(fs, filePath);
DFSTestUtil.WaitForReplication(cluster, b, 1, ReplicationFactor, 0);
ReplicationFactor = 2;
NameNodeAdapter.SetReplication(ns, "/testFile", ReplicationFactor);
DFSTestUtil.WaitForReplication(cluster, b, 2, ReplicationFactor, 0);
}
finally
{
cluster.Shutdown();
}
}
// ok - as expected
public virtual void CheckInvalidBlock(ExtendedBlock b)
{
SimulatedFSDataset fsdataset = GetSimulatedFSDataset();
NUnit.Framework.Assert.IsFalse(fsdataset.IsValidBlock(b));
try
{
fsdataset.GetLength(b);
NUnit.Framework.Assert.IsTrue("Expected an IO exception", false);
}
catch (IOException)
{
}
// ok - as expected
try
{
fsdataset.GetBlockInputStream(b);
NUnit.Framework.Assert.IsTrue("Expected an IO exception", false);
}
catch (IOException)
{
}
// ok - as expected
try
{
fsdataset.FinalizeBlock(b);
NUnit.Framework.Assert.IsTrue("Expected an IO exception", false);
}
catch (IOException)
{
}
}
public virtual void TestSufficientlyReplBlocksUsesNewRack()
{
Configuration conf = GetConf();
short ReplicationFactor = 3;
Path filePath = new Path("/testFile");
// All datanodes are on the same rack
string[] racks = new string[] { "/rack1", "/rack1", "/rack1" };
MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).NumDataNodes(racks.Length
).Racks(racks).Build();
try
{
// Create a file with one block with a replication factor of 3
FileSystem fs = cluster.GetFileSystem();
DFSTestUtil.CreateFile(fs, filePath, 1L, ReplicationFactor, 1L);
ExtendedBlock b = DFSTestUtil.GetFirstBlock(fs, filePath);
DFSTestUtil.WaitForReplication(cluster, b, 1, ReplicationFactor, 0);
// Add a new datanode on a different rack
string[] newRacks = new string[] { "/rack2" };
cluster.StartDataNodes(conf, 1, true, null, newRacks);
cluster.WaitActive();
DFSTestUtil.WaitForReplication(cluster, b, 2, ReplicationFactor, 0);
}
finally
{
cluster.Shutdown();
}
}
public virtual void TestReduceReplFactorRespectsRackPolicy()
{
Configuration conf = GetConf();
short ReplicationFactor = 3;
Path filePath = new Path("/testFile");
string[] racks = new string[] { "/rack1", "/rack1", "/rack2", "/rack2" };
MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).NumDataNodes(racks.Length
).Racks(racks).Build();
FSNamesystem ns = cluster.GetNameNode().GetNamesystem();
try
{
// Create a file with one block
FileSystem fs = cluster.GetFileSystem();
DFSTestUtil.CreateFile(fs, filePath, 1L, ReplicationFactor, 1L);
ExtendedBlock b = DFSTestUtil.GetFirstBlock(fs, filePath);
DFSTestUtil.WaitForReplication(cluster, b, 2, ReplicationFactor, 0);
// Decrease the replication factor, make sure the deleted replica
// was not the one that lived on the rack with only one replica,
// ie we should still have 2 racks after reducing the repl factor.
ReplicationFactor = 2;
NameNodeAdapter.SetReplication(ns, "/testFile", ReplicationFactor);
DFSTestUtil.WaitForReplication(cluster, b, 2, ReplicationFactor, 0);
}
finally
{
cluster.Shutdown();
}
}
public virtual void TestArrayOutOfBoundsException()
{
MiniDFSCluster cluster = null;
try
{
Configuration conf = new HdfsConfiguration();
cluster = new MiniDFSCluster.Builder(conf).NumDataNodes(2).Build();
cluster.WaitActive();
FileSystem fs = cluster.GetFileSystem();
Path FilePath = new Path("/tmp.txt");
long FileLen = 1L;
DFSTestUtil.CreateFile(fs, FilePath, FileLen, (short)2, 1L);
// get the block
string bpid = cluster.GetNamesystem().GetBlockPoolId();
FilePath storageDir = cluster.GetInstanceStorageDir(0, 0);
FilePath dataDir = MiniDFSCluster.GetFinalizedDir(storageDir, bpid);
NUnit.Framework.Assert.IsTrue("Data directory does not exist", dataDir.Exists());
ExtendedBlock blk = GetBlock(bpid, dataDir);
if (blk == null)
{
storageDir = cluster.GetInstanceStorageDir(0, 1);
dataDir = MiniDFSCluster.GetFinalizedDir(storageDir, bpid);
blk = GetBlock(bpid, dataDir);
}
NUnit.Framework.Assert.IsFalse("Data directory does not contain any blocks or there was an "
+ "IO error", blk == null);
// start a third datanode
cluster.StartDataNodes(conf, 1, true, null, null);
AList <DataNode> datanodes = cluster.GetDataNodes();
NUnit.Framework.Assert.AreEqual(datanodes.Count, 3);
DataNode dataNode = datanodes[2];
// report corrupted block by the third datanode
DatanodeRegistration dnR = DataNodeTestUtils.GetDNRegistrationForBP(dataNode, blk
.GetBlockPoolId());
FSNamesystem ns = cluster.GetNamesystem();
ns.WriteLock();
try
{
cluster.GetNamesystem().GetBlockManager().FindAndMarkBlockAsCorrupt(blk, new DatanodeInfo
(dnR), "TEST", "STORAGE_ID");
}
finally
{
ns.WriteUnlock();
}
// open the file
fs.Open(FilePath);
//clean up
fs.Delete(FilePath, false);
}
finally
{
if (cluster != null)
{
cluster.Shutdown();
}
}
}
public virtual void TestBlockTokenRpcLeak()
{
Configuration conf = new Configuration();
conf.Set(CommonConfigurationKeysPublic.HadoopSecurityAuthentication, "kerberos");
UserGroupInformation.SetConfiguration(conf);
Assume.AssumeTrue(FdDir.Exists());
BlockTokenSecretManager sm = new BlockTokenSecretManager(blockKeyUpdateInterval,
blockTokenLifetime, 0, "fake-pool", null);
Org.Apache.Hadoop.Security.Token.Token <BlockTokenIdentifier> token = sm.GenerateToken
(block3, EnumSet.AllOf <BlockTokenSecretManager.AccessMode>());
Server server = CreateMockDatanode(sm, token, conf);
server.Start();
IPEndPoint addr = NetUtils.GetConnectAddress(server);
DatanodeID fakeDnId = DFSTestUtil.GetLocalDatanodeID(addr.Port);
ExtendedBlock b = new ExtendedBlock("fake-pool", new Org.Apache.Hadoop.Hdfs.Protocol.Block
(12345L));
LocatedBlock fakeBlock = new LocatedBlock(b, new DatanodeInfo[0]);
fakeBlock.SetBlockToken(token);
// Create another RPC proxy with the same configuration - this will never
// attempt to connect anywhere -- but it causes the refcount on the
// RPC "Client" object to stay above 0 such that RPC.stopProxy doesn't
// actually close the TCP connections to the real target DN.
ClientDatanodeProtocol proxyToNoWhere = RPC.GetProxy <ClientDatanodeProtocol>(ClientDatanodeProtocol
.versionID, new IPEndPoint("1.1.1.1", 1), UserGroupInformation.CreateRemoteUser(
"junk"), conf, NetUtils.GetDefaultSocketFactory(conf));
ClientDatanodeProtocol proxy = null;
int fdsAtStart = CountOpenFileDescriptors();
try
{
long endTime = Time.Now() + 3000;
while (Time.Now() < endTime)
{
proxy = DFSUtil.CreateClientDatanodeProtocolProxy(fakeDnId, conf, 1000, false, fakeBlock
);
NUnit.Framework.Assert.AreEqual(block3.GetBlockId(), proxy.GetReplicaVisibleLength
(block3));
if (proxy != null)
{
RPC.StopProxy(proxy);
}
Log.Info("Num open fds:" + CountOpenFileDescriptors());
}
int fdsAtEnd = CountOpenFileDescriptors();
if (fdsAtEnd - fdsAtStart > 50)
{
NUnit.Framework.Assert.Fail("Leaked " + (fdsAtEnd - fdsAtStart) + " fds!");
}
}
finally
{
server.Stop();
}
RPC.StopProxy(proxyToNoWhere);
}
/// <exception cref="System.IO.IOException"/>
public static void CheckMetaInfo(ExtendedBlock b, DataNode dn)
{
Block metainfo = DataNodeTestUtils.GetFSDataset(dn).GetStoredBlock(b.GetBlockPoolId
(), b.GetBlockId());
NUnit.Framework.Assert.AreEqual(b.GetBlockId(), metainfo.GetBlockId());
NUnit.Framework.Assert.AreEqual(b.GetNumBytes(), metainfo.GetNumBytes());
}
/// <summary>Generate an block token for current user</summary>
/// <exception cref="System.IO.IOException"/>
public virtual Org.Apache.Hadoop.Security.Token.Token <BlockTokenIdentifier> GenerateToken
(ExtendedBlock block, EnumSet <BlockTokenSecretManager.AccessMode> modes)
{
UserGroupInformation ugi = UserGroupInformation.GetCurrentUser();
string userID = (ugi == null ? null : ugi.GetShortUserName());
return(GenerateToken(userID, block, modes));
}
/// <exception cref="System.IO.IOException"/>
public static bool UnlinkBlock <_T0>(FsDatasetSpi <_T0> fsd, ExtendedBlock block, int
numLinks)
where _T0 : FsVolumeSpi
{
ReplicaInfo info = ((FsDatasetImpl)fsd).GetReplicaInfo(block);
return(info.UnlinkBlock(numLinks));
}
/// <exception cref="System.IO.IOException"/>
public override void BlockChecksum(ExtendedBlock blk, Org.Apache.Hadoop.Security.Token.Token
<BlockTokenIdentifier> blockToken)
{
DataTransferProtos.OpBlockChecksumProto proto = ((DataTransferProtos.OpBlockChecksumProto
)DataTransferProtos.OpBlockChecksumProto.NewBuilder().SetHeader(DataTransferProtoUtil
.BuildBaseHeader(blk, blockToken)).Build());
Send(@out, OP.BlockChecksum, proto);
}
/// <exception cref="System.IO.IOException"/>
internal virtual void WriteBlock(ExtendedBlock block, BlockConstructionStage stage
, long newGS, DataChecksum checksum)
{
sender.WriteBlock(block, StorageType.Default, BlockTokenSecretManager.DummyToken,
"cl", new DatanodeInfo[1], new StorageType[1], null, stage, 0, block.GetNumBytes
(), block.GetNumBytes(), newGS, checksum, CachingStrategy.NewDefaultStrategy(),
false, false, null);
}
public _Supplier_594(TestDNFencing _enclosing, MiniDFSCluster cluster, ExtendedBlock
block, int waitFor)
{
this._enclosing = _enclosing;
this.cluster = cluster;
this.block = block;
this.waitFor = waitFor;
}
public _CacheVisitor_687(int expectedOutstandingMmaps, ExtendedBlock block, bool
expectedIsAnchorable, bool expectedIsAnchored, MutableBoolean result)
{
this.expectedOutstandingMmaps = expectedOutstandingMmaps;
this.block = block;
this.expectedIsAnchorable = expectedIsAnchorable;
this.expectedIsAnchored = expectedIsAnchored;
this.result = result;
}
/// <exception cref="System.IO.IOException"/>
public override void ReplaceBlock(ExtendedBlock blk, StorageType storageType, Org.Apache.Hadoop.Security.Token.Token
<BlockTokenIdentifier> blockToken, string delHint, DatanodeInfo source)
{
DataTransferProtos.OpReplaceBlockProto proto = ((DataTransferProtos.OpReplaceBlockProto
)DataTransferProtos.OpReplaceBlockProto.NewBuilder().SetHeader(DataTransferProtoUtil
.BuildBaseHeader(blk, blockToken)).SetStorageType(PBHelper.ConvertStorageType(storageType
)).SetDelHint(delHint).SetSource(PBHelper.ConvertDatanodeInfo(source)).Build());
Send(@out, OP.ReplaceBlock, proto);
}
/// <summary>Scan a block.</summary>
/// <param name="cblock">The block to scan.</param>
/// <param name="bytesPerSec">The bytes per second to scan at.</param>
/// <returns>
/// The length of the block that was scanned, or
/// -1 if the block could not be scanned.
/// </returns>
private long ScanBlock(ExtendedBlock cblock, long bytesPerSec)
{
// 'cblock' has a valid blockId and block pool id, but we don't yet know the
// genstamp the block is supposed to have. Ask the FsDatasetImpl for this
// information.
ExtendedBlock block = null;
try
{
Block b = volume.GetDataset().GetStoredBlock(cblock.GetBlockPoolId(), cblock.GetBlockId
());
if (b == null)
{
Log.Info("FileNotFound while finding block {} on volume {}", cblock, volume.GetBasePath
());
}
else
{
block = new ExtendedBlock(cblock.GetBlockPoolId(), b);
}
}
catch (FileNotFoundException)
{
Log.Info("FileNotFoundException while finding block {} on volume {}", cblock, volume
.GetBasePath());
}
catch (IOException)
{
Log.Warn("I/O error while finding block {} on volume {}", cblock, volume.GetBasePath
());
}
if (block == null)
{
return(-1);
}
// block not found.
BlockSender blockSender = null;
try
{
blockSender = new BlockSender(block, 0, -1, false, true, true, datanode, null, CachingStrategy
.NewDropBehind());
throttler.SetBandwidth(bytesPerSec);
long bytesRead = blockSender.SendBlock(nullStream, null, throttler);
resultHandler.Handle(block, null);
return(bytesRead);
}
catch (IOException e)
{
resultHandler.Handle(block, e);
}
finally
{
IOUtils.Cleanup(null, blockSender);
}
return(-1);
}
public virtual void TestNodeDecomissionWithOverreplicationRespectsRackPolicy()
{
Configuration conf = GetConf();
short ReplicationFactor = 5;
Path filePath = new Path("/testFile");
// Configure an excludes file
FileSystem localFileSys = FileSystem.GetLocal(conf);
Path workingDir = localFileSys.GetWorkingDirectory();
Path dir = new Path(workingDir, "build/test/data/temp/decommission");
Path excludeFile = new Path(dir, "exclude");
Path includeFile = new Path(dir, "include");
NUnit.Framework.Assert.IsTrue(localFileSys.Mkdirs(dir));
DFSTestUtil.WriteFile(localFileSys, excludeFile, string.Empty);
DFSTestUtil.WriteFile(localFileSys, includeFile, string.Empty);
conf.Set(DFSConfigKeys.DfsHosts, includeFile.ToUri().GetPath());
conf.Set(DFSConfigKeys.DfsHostsExclude, excludeFile.ToUri().GetPath());
// All hosts are on two racks, only one host on /rack2
string[] racks = new string[] { "/rack1", "/rack2", "/rack1", "/rack1", "/rack1" };
MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).NumDataNodes(racks.Length
).Racks(racks).Build();
FSNamesystem ns = cluster.GetNameNode().GetNamesystem();
try
{
FileSystem fs = cluster.GetFileSystem();
DFSTestUtil.CreateFile(fs, filePath, 1L, ReplicationFactor, 1L);
ExtendedBlock b = DFSTestUtil.GetFirstBlock(fs, filePath);
DFSTestUtil.WaitForReplication(cluster, b, 2, ReplicationFactor, 0);
// Lower the replication factor so the blocks are over replicated
ReplicationFactor = 2;
fs.SetReplication(filePath, ReplicationFactor);
// Decommission one of the hosts with the block that is not on
// the lone host on rack2 (if we decomission that host it would
// be impossible to respect the rack policy).
BlockLocation[] locs = fs.GetFileBlockLocations(fs.GetFileStatus(filePath), 0, long.MaxValue
);
foreach (string top in locs[0].GetTopologyPaths())
{
if (!top.StartsWith("/rack2"))
{
string name = Sharpen.Runtime.Substring(top, "/rack1".Length + 1);
DFSTestUtil.WriteFile(localFileSys, excludeFile, name);
ns.GetBlockManager().GetDatanodeManager().RefreshNodes(conf);
DFSTestUtil.WaitForDecommission(fs, name);
break;
}
}
// Check the block still has sufficient # replicas across racks,
// ie we didn't remove the replica on the host on /rack1.
DFSTestUtil.WaitForReplication(cluster, b, 2, ReplicationFactor, 0);
}
finally
{
cluster.Shutdown();
}
}
/// <summary>
/// Override createRbw to verify that the block length that is passed
/// is correct.
/// </summary>
/// <remarks>
/// Override createRbw to verify that the block length that is passed
/// is correct. This requires both DFSOutputStream and BlockReceiver to
/// correctly propagate the hint to FsDatasetSpi.
/// </remarks>
/// <exception cref="System.IO.IOException"/>
public override ReplicaHandler CreateRbw(StorageType storageType, ExtendedBlock b
, bool allowLazyPersist)
{
lock (this)
{
Assert.AssertThat(b.GetLocalBlock().GetNumBytes(), IS.Is(ExpectedBlockLength));
return(base.CreateRbw(storageType, b, allowLazyPersist));
}
}
/// <summary>
/// Delete the block file and meta file from the disk asynchronously, adjust
/// dfsUsed statistics accordingly.
/// </summary>
internal virtual void DeleteAsync(FsVolumeReference volumeRef, FilePath blockFile
, FilePath metaFile, ExtendedBlock block, string trashDirectory)
{
Log.Info("Scheduling " + block.GetLocalBlock() + " file " + blockFile + " for deletion"
);
FsDatasetAsyncDiskService.ReplicaFileDeleteTask deletionTask = new FsDatasetAsyncDiskService.ReplicaFileDeleteTask
(this, volumeRef, blockFile, metaFile, block, trashDirectory);
Execute(((FsVolumeImpl)volumeRef.GetVolume()).GetCurrentDir(), deletionTask);
}
/// <summary>Generate a block token for a specified user</summary>
/// <exception cref="System.IO.IOException"/>
public virtual Org.Apache.Hadoop.Security.Token.Token <BlockTokenIdentifier> GenerateToken
(string userId, ExtendedBlock block, EnumSet <BlockTokenSecretManager.AccessMode>
modes)
{
BlockTokenIdentifier id = new BlockTokenIdentifier(userId, block.GetBlockPoolId()
, block.GetBlockId(), modes);
return(new Org.Apache.Hadoop.Security.Token.Token <BlockTokenIdentifier>(id, this));
}
public virtual void TestHostsExcludeInUI()
{
Configuration conf = GetConf();
short ReplicationFactor = 2;
Path filePath = new Path("/testFile");
// Configure an excludes file
FileSystem localFileSys = FileSystem.GetLocal(conf);
Path workingDir = localFileSys.GetWorkingDirectory();
Path dir = new Path(workingDir, "build/test/data/temp/decommission");
Path excludeFile = new Path(dir, "exclude");
Path includeFile = new Path(dir, "include");
NUnit.Framework.Assert.IsTrue(localFileSys.Mkdirs(dir));
DFSTestUtil.WriteFile(localFileSys, excludeFile, string.Empty);
DFSTestUtil.WriteFile(localFileSys, includeFile, string.Empty);
conf.Set(DFSConfigKeys.DfsHostsExclude, excludeFile.ToUri().GetPath());
conf.Set(DFSConfigKeys.DfsHosts, includeFile.ToUri().GetPath());
// Two blocks and four racks
string[] racks = new string[] { "/rack1", "/rack1", "/rack2", "/rack2" };
MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).NumDataNodes(racks.Length
).Racks(racks).Build();
FSNamesystem ns = cluster.GetNameNode().GetNamesystem();
try
{
// Create a file with one block
FileSystem fs = cluster.GetFileSystem();
DFSTestUtil.CreateFile(fs, filePath, 1L, ReplicationFactor, 1L);
ExtendedBlock b = DFSTestUtil.GetFirstBlock(fs, filePath);
DFSTestUtil.WaitForReplication(cluster, b, 2, ReplicationFactor, 0);
// Decommission one of the hosts with the block, this should cause
// the block to get replicated to another host on the same rack,
// otherwise the rack policy is violated.
BlockLocation[] locs = fs.GetFileBlockLocations(fs.GetFileStatus(filePath), 0, long.MaxValue
);
string name = locs[0].GetNames()[0];
string names = name + "\n" + "localhost:42\n";
Log.Info("adding '" + names + "' to exclude file " + excludeFile.ToUri().GetPath(
));
DFSTestUtil.WriteFile(localFileSys, excludeFile, name);
ns.GetBlockManager().GetDatanodeManager().RefreshNodes(conf);
DFSTestUtil.WaitForDecommission(fs, name);
// Check the block still has sufficient # replicas across racks
DFSTestUtil.WaitForReplication(cluster, b, 2, ReplicationFactor, 0);
MBeanServer mbs = ManagementFactory.GetPlatformMBeanServer();
ObjectName mxbeanName = new ObjectName("Hadoop:service=NameNode,name=NameNodeInfo"
);
string nodes = (string)mbs.GetAttribute(mxbeanName, "LiveNodes");
NUnit.Framework.Assert.IsTrue("Live nodes should contain the decommissioned node"
, nodes.Contains("Decommissioned"));
}
finally
{
cluster.Shutdown();
}
}
