/// <exception cref="System.Exception"/>
public virtual void TestQuotaByStorageTypeWithSnapshot()
{
Path sub1 = new Path(dir, "Sub1");
dfs.Mkdirs(sub1);
// Setup ONE_SSD policy and SSD quota of 4 * BLOCKSIZE on sub1
dfs.SetStoragePolicy(sub1, HdfsConstants.OnessdStoragePolicyName);
dfs.SetQuotaByStorageType(sub1, StorageType.Ssd, 4 * Blocksize);
INode sub1Node = fsdir.GetINode4Write(sub1.ToString());
NUnit.Framework.Assert.IsTrue(sub1Node.IsDirectory());
NUnit.Framework.Assert.IsTrue(sub1Node.IsQuotaSet());
// Create file1 of size 2 * BLOCKSIZE under sub1
Path file1 = new Path(sub1, "file1");
long file1Len = 2 * Blocksize;
DFSTestUtil.CreateFile(dfs, file1, file1Len, Replication, seed);
// Create snapshot on sub1 named s1
SnapshotTestHelper.CreateSnapshot(dfs, sub1, "s1");
// Verify sub1 SSD usage is unchanged after creating snapshot s1
long ssdConsumed = sub1Node.AsDirectory().GetDirectoryWithQuotaFeature().GetSpaceConsumed
().GetTypeSpaces().Get(StorageType.Ssd);
NUnit.Framework.Assert.AreEqual(file1Len, ssdConsumed);
// Delete file1
dfs.Delete(file1, false);
// Verify sub1 SSD usage is unchanged due to the existence of snapshot s1
ssdConsumed = sub1Node.AsDirectory().GetDirectoryWithQuotaFeature().GetSpaceConsumed
().GetTypeSpaces().Get(StorageType.Ssd);
NUnit.Framework.Assert.AreEqual(file1Len, ssdConsumed);
QuotaCounts counts1 = new QuotaCounts.Builder().Build();
sub1Node.ComputeQuotaUsage(fsn.GetBlockManager().GetStoragePolicySuite(), counts1
, true);
NUnit.Framework.Assert.AreEqual(sub1Node.DumpTreeRecursively().ToString(), file1Len
, counts1.GetTypeSpaces().Get(StorageType.Ssd));
ContentSummary cs1 = dfs.GetContentSummary(sub1);
NUnit.Framework.Assert.AreEqual(cs1.GetSpaceConsumed(), file1Len * Replication);
NUnit.Framework.Assert.AreEqual(cs1.GetTypeConsumed(StorageType.Ssd), file1Len);
NUnit.Framework.Assert.AreEqual(cs1.GetTypeConsumed(StorageType.Disk), file1Len *
2);
// Delete the snapshot s1
dfs.DeleteSnapshot(sub1, "s1");
// Verify sub1 SSD usage is fully reclaimed and changed to 0
ssdConsumed = sub1Node.AsDirectory().GetDirectoryWithQuotaFeature().GetSpaceConsumed
().GetTypeSpaces().Get(StorageType.Ssd);
NUnit.Framework.Assert.AreEqual(0, ssdConsumed);
QuotaCounts counts2 = new QuotaCounts.Builder().Build();
sub1Node.ComputeQuotaUsage(fsn.GetBlockManager().GetStoragePolicySuite(), counts2
, true);
NUnit.Framework.Assert.AreEqual(sub1Node.DumpTreeRecursively().ToString(), 0, counts2
.GetTypeSpaces().Get(StorageType.Ssd));
ContentSummary cs2 = dfs.GetContentSummary(sub1);
NUnit.Framework.Assert.AreEqual(cs2.GetSpaceConsumed(), 0);
NUnit.Framework.Assert.AreEqual(cs2.GetTypeConsumed(StorageType.Ssd), 0);
NUnit.Framework.Assert.AreEqual(cs2.GetTypeConsumed(StorageType.Disk), 0);
}
/// <summary>
/// Test if the quota can be correctly updated for create file even
/// QuotaByStorageTypeExceededException is thrown
/// </summary>
/// <exception cref="System.Exception"/>
public virtual void TestQuotaByStorageTypeExceptionWithFileCreate()
{
Path foo = new Path(dir, "foo");
Path createdFile1 = new Path(foo, "created_file1.data");
dfs.Mkdirs(foo);
dfs.SetStoragePolicy(foo, HdfsConstants.OnessdStoragePolicyName);
dfs.SetQuotaByStorageType(foo, StorageType.Ssd, Blocksize * 4);
INode fnode = fsdir.GetINode4Write(foo.ToString());
NUnit.Framework.Assert.IsTrue(fnode.IsDirectory());
NUnit.Framework.Assert.IsTrue(fnode.IsQuotaSet());
// Create the 1st file of size 2 * BLOCKSIZE under directory "foo" and expect no exception
long file1Len = Blocksize * 2;
int bufLen = Blocksize / 16;
DFSTestUtil.CreateFile(dfs, createdFile1, bufLen, file1Len, Blocksize, Replication
, seed);
long currentSSDConsumed = fnode.AsDirectory().GetDirectoryWithQuotaFeature().GetSpaceConsumed
().GetTypeSpaces().Get(StorageType.Ssd);
NUnit.Framework.Assert.AreEqual(file1Len, currentSSDConsumed);
// Create the 2nd file of size 1.5 * BLOCKSIZE under directory "foo" and expect no exception
Path createdFile2 = new Path(foo, "created_file2.data");
long file2Len = Blocksize + Blocksize / 2;
DFSTestUtil.CreateFile(dfs, createdFile2, bufLen, file2Len, Blocksize, Replication
, seed);
currentSSDConsumed = fnode.AsDirectory().GetDirectoryWithQuotaFeature().GetSpaceConsumed
().GetTypeSpaces().Get(StorageType.Ssd);
NUnit.Framework.Assert.AreEqual(file1Len + file2Len, currentSSDConsumed);
// Create the 3rd file of size BLOCKSIZE under directory "foo" and expect quota exceeded exception
Path createdFile3 = new Path(foo, "created_file3.data");
long file3Len = Blocksize;
try
{
DFSTestUtil.CreateFile(dfs, createdFile3, bufLen, file3Len, Blocksize, Replication
, seed);
NUnit.Framework.Assert.Fail("Should have failed with QuotaByStorageTypeExceededException "
);
}
catch (Exception t)
{
Log.Info("Got expected exception ", t);
currentSSDConsumed = fnode.AsDirectory().GetDirectoryWithQuotaFeature().GetSpaceConsumed
().GetTypeSpaces().Get(StorageType.Ssd);
NUnit.Framework.Assert.AreEqual(file1Len + file2Len, currentSSDConsumed);
}
}
private int GetSelfSnapshot(int prior)
{
INodeReference.WithCount wc = (INodeReference.WithCount)GetReferredINode().AsReference
();
INode referred = wc.GetReferredINode();
int lastSnapshot = Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot.CurrentStateId;
if (referred.IsFile() && referred.AsFile().IsWithSnapshot())
{
lastSnapshot = referred.AsFile().GetDiffs().GetLastSnapshotId();
}
else
{
if (referred.IsDirectory())
{
DirectoryWithSnapshotFeature sf = referred.AsDirectory().GetDirectoryWithSnapshotFeature
();
if (sf != null)
{
lastSnapshot = sf.GetLastSnapshotId();
}
}
}
if (lastSnapshot != Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot.CurrentStateId &&
lastSnapshot != prior)
{
return(lastSnapshot);
}
else
{
return(Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot.CurrentStateId);
}
}
/// <summary>
/// Check if the given INode (or one of its descendants) is snapshottable and
/// already has snapshots.
/// </summary>
/// <param name="target">The given INode</param>
/// <param name="snapshottableDirs">
/// The list of directories that are snapshottable
/// but do not have snapshots yet
/// </param>
/// <exception cref="Org.Apache.Hadoop.Hdfs.Protocol.SnapshotException"/>
internal static void CheckSnapshot(INode target, IList <INodeDirectory> snapshottableDirs
)
{
if (target.IsDirectory())
{
INodeDirectory targetDir = target.AsDirectory();
DirectorySnapshottableFeature sf = targetDir.GetDirectorySnapshottableFeature();
if (sf != null)
{
if (sf.GetNumSnapshots() > 0)
{
string fullPath = targetDir.GetFullPathName();
throw new SnapshotException("The directory " + fullPath + " cannot be deleted since "
+ fullPath + " is snapshottable and already has snapshots");
}
else
{
if (snapshottableDirs != null)
{
snapshottableDirs.AddItem(targetDir);
}
}
}
foreach (INode child in targetDir.GetChildrenList(Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot
.CurrentStateId))
{
CheckSnapshot(child, snapshottableDirs);
}
}
}
/// <exception cref="System.Exception"/>
internal virtual void TestQuotaByStorageTypeWithFileCreateCase(string storagePolicy
, StorageType storageType, short replication)
{
Path foo = new Path(dir, "foo");
Path createdFile1 = new Path(foo, "created_file1.data");
dfs.Mkdirs(foo);
// set storage policy on directory "foo" to storagePolicy
dfs.SetStoragePolicy(foo, storagePolicy);
// set quota by storage type on directory "foo"
dfs.SetQuotaByStorageType(foo, storageType, Blocksize * 10);
INode fnode = fsdir.GetINode4Write(foo.ToString());
NUnit.Framework.Assert.IsTrue(fnode.IsDirectory());
NUnit.Framework.Assert.IsTrue(fnode.IsQuotaSet());
// Create file of size 2 * BLOCKSIZE under directory "foo"
long file1Len = Blocksize * 2 + Blocksize / 2;
int bufLen = Blocksize / 16;
DFSTestUtil.CreateFile(dfs, createdFile1, bufLen, file1Len, Blocksize, Replication
, seed);
// Verify space consumed and remaining quota
long storageTypeConsumed = fnode.AsDirectory().GetDirectoryWithQuotaFeature().GetSpaceConsumed
().GetTypeSpaces().Get(storageType);
NUnit.Framework.Assert.AreEqual(file1Len * replication, storageTypeConsumed);
}
/// <summary>Create FileStatus by file INode</summary>
/// <exception cref="System.IO.IOException"/>
internal static HdfsFileStatus CreateFileStatus(FSDirectory fsd, string fullPath,
byte[] path, INode node, byte storagePolicy, int snapshot, bool isRawPath, INodesInPath
iip)
{
long size = 0;
// length is zero for directories
short replication = 0;
long blocksize = 0;
bool isEncrypted;
FileEncryptionInfo feInfo = isRawPath ? null : fsd.GetFileEncryptionInfo(node, snapshot
, iip);
if (node.IsFile())
{
INodeFile fileNode = node.AsFile();
size = fileNode.ComputeFileSize(snapshot);
replication = fileNode.GetFileReplication(snapshot);
blocksize = fileNode.GetPreferredBlockSize();
isEncrypted = (feInfo != null) || (isRawPath && fsd.IsInAnEZ(INodesInPath.FromINode
(node)));
}
else
{
isEncrypted = fsd.IsInAnEZ(INodesInPath.FromINode(node));
}
int childrenNum = node.IsDirectory() ? node.AsDirectory().GetChildrenNum(snapshot
) : 0;
INodeAttributes nodeAttrs = fsd.GetAttributes(fullPath, path, node, snapshot);
return(new HdfsFileStatus(size, node.IsDirectory(), replication, blocksize, node.
GetModificationTime(snapshot), node.GetAccessTime(snapshot), GetPermissionForFileStatus
(nodeAttrs, isEncrypted), nodeAttrs.GetUserName(), nodeAttrs.GetGroupName(), node
.IsSymlink() ? node.AsSymlink().GetSymlink() : null, path, node.GetId(), childrenNum
, feInfo, storagePolicy));
}
/// <exception cref="System.IO.IOException"/>
private static void ValidateOverwrite(string src, string dst, bool overwrite, INode
srcInode, INode dstInode)
{
string error;
// It's OK to rename a file to a symlink and vice versa
if (dstInode.IsDirectory() != srcInode.IsDirectory())
{
error = "Source " + src + " and destination " + dst + " must both be directories";
NameNode.stateChangeLog.Warn("DIR* FSDirectory.unprotectedRenameTo: " + error);
throw new IOException(error);
}
if (!overwrite)
{
// If destination exists, overwrite flag must be true
error = "rename destination " + dst + " already exists";
NameNode.stateChangeLog.Warn("DIR* FSDirectory.unprotectedRenameTo: " + error);
throw new FileAlreadyExistsException(error);
}
if (dstInode.IsDirectory())
{
ReadOnlyList <INode> children = dstInode.AsDirectory().GetChildrenList(Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot
.CurrentStateId);
if (!children.IsEmpty())
{
error = "rename destination directory is not empty: " + dst;
NameNode.stateChangeLog.Warn("DIR* FSDirectory.unprotectedRenameTo: " + error);
throw new IOException(error);
}
}
}
/// <summary>
/// Guarded by
/// <see cref="FSNamesystem.ReadLock()"/>
///
/// </summary>
/// <exception cref="Org.Apache.Hadoop.Security.AccessControlException"/>
private void CheckSubAccess(byte[][] pathByNameArr, int pathIdx, INode inode, int
snapshotId, FsAction access, bool ignoreEmptyDir)
{
if (inode == null || !inode.IsDirectory())
{
return;
}
Stack <INodeDirectory> directories = new Stack <INodeDirectory>();
for (directories.Push(inode.AsDirectory()); !directories.IsEmpty();)
{
INodeDirectory d = directories.Pop();
ReadOnlyList <INode> cList = d.GetChildrenList(snapshotId);
if (!(cList.IsEmpty() && ignoreEmptyDir))
{
//TODO have to figure this out with inodeattribute provider
Check(GetINodeAttrs(pathByNameArr, pathIdx, d, snapshotId), inode.GetFullPathName
(), access);
}
foreach (INode child in cList)
{
if (child.IsDirectory())
{
directories.Push(child.AsDirectory());
}
}
}
}
/// <summary>Save one inode's attributes to the image.</summary>
/// <exception cref="System.IO.IOException"/>
public static void SaveINode2Image(INode node, DataOutput @out, bool writeUnderConstruction
, SnapshotFSImageFormat.ReferenceMap referenceMap)
{
if (node.IsReference())
{
WriteINodeReference(node.AsReference(), @out, writeUnderConstruction, referenceMap
);
}
else
{
if (node.IsDirectory())
{
WriteINodeDirectory(node.AsDirectory(), @out);
}
else
{
if (node.IsSymlink())
{
WriteINodeSymlink(node.AsSymlink(), @out);
}
else
{
if (node.IsFile())
{
WriteINodeFile(node.AsFile(), @out, writeUnderConstruction);
}
}
}
}
}
/// <summary>Create FileStatus with location info by file INode</summary>
/// <exception cref="System.IO.IOException"/>
private static HdfsLocatedFileStatus CreateLocatedFileStatus(FSDirectory fsd, string
fullPath, byte[] path, INode node, byte storagePolicy, int snapshot, bool isRawPath
, INodesInPath iip)
{
System.Diagnostics.Debug.Assert(fsd.HasReadLock());
long size = 0;
// length is zero for directories
short replication = 0;
long blocksize = 0;
LocatedBlocks loc = null;
bool isEncrypted;
FileEncryptionInfo feInfo = isRawPath ? null : fsd.GetFileEncryptionInfo(node, snapshot
, iip);
if (node.IsFile())
{
INodeFile fileNode = node.AsFile();
size = fileNode.ComputeFileSize(snapshot);
replication = fileNode.GetFileReplication(snapshot);
blocksize = fileNode.GetPreferredBlockSize();
bool inSnapshot = snapshot != Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot
.CurrentStateId;
bool isUc = !inSnapshot && fileNode.IsUnderConstruction();
long fileSize = !inSnapshot && isUc?fileNode.ComputeFileSizeNotIncludingLastUcBlock
() : size;
loc = fsd.GetFSNamesystem().GetBlockManager().CreateLocatedBlocks(fileNode.GetBlocks
(snapshot), fileSize, isUc, 0L, size, false, inSnapshot, feInfo);
if (loc == null)
{
loc = new LocatedBlocks();
}
isEncrypted = (feInfo != null) || (isRawPath && fsd.IsInAnEZ(INodesInPath.FromINode
(node)));
}
else
{
isEncrypted = fsd.IsInAnEZ(INodesInPath.FromINode(node));
}
int childrenNum = node.IsDirectory() ? node.AsDirectory().GetChildrenNum(snapshot
) : 0;
INodeAttributes nodeAttrs = fsd.GetAttributes(fullPath, path, node, snapshot);
HdfsLocatedFileStatus status = new HdfsLocatedFileStatus(size, node.IsDirectory()
, replication, blocksize, node.GetModificationTime(snapshot), node.GetAccessTime
(snapshot), GetPermissionForFileStatus(nodeAttrs, isEncrypted), nodeAttrs.GetUserName
(), nodeAttrs.GetGroupName(), node.IsSymlink() ? node.AsSymlink().GetSymlink() :
null, path, node.GetId(), loc, childrenNum, feInfo, storagePolicy);
// Set caching information for the located blocks.
if (loc != null)
{
CacheManager cacheManager = fsd.GetFSNamesystem().GetCacheManager();
foreach (LocatedBlock lb in loc.GetLocatedBlocks())
{
cacheManager.SetCachedLocations(lb);
}
}
return(status);
}
/// <exception cref="System.Exception"/>
public virtual void TestQuotaByStorageTypeParentOnChildOff()
{
short replication = 1;
Path parent = new Path(dir, "parent");
Path child = new Path(parent, "child");
dfs.Mkdirs(parent);
dfs.Mkdirs(child);
dfs.SetStoragePolicy(parent, HdfsConstants.OnessdStoragePolicyName);
dfs.SetQuotaByStorageType(parent, StorageType.Ssd, 3 * Blocksize);
// Create file of size 2.5 * BLOCKSIZE under child directory
// Verify parent Quota applies
Path createdFile1 = new Path(child, "created_file1.data");
long file1Len = Blocksize * 2 + Blocksize / 2;
int bufLen = Blocksize / 16;
DFSTestUtil.CreateFile(dfs, createdFile1, bufLen, file1Len, Blocksize, replication
, seed);
INode fnode = fsdir.GetINode4Write(parent.ToString());
NUnit.Framework.Assert.IsTrue(fnode.IsDirectory());
NUnit.Framework.Assert.IsTrue(fnode.IsQuotaSet());
long currentSSDConsumed = fnode.AsDirectory().GetDirectoryWithQuotaFeature().GetSpaceConsumed
().GetTypeSpaces().Get(StorageType.Ssd);
NUnit.Framework.Assert.AreEqual(file1Len, currentSSDConsumed);
// Create the 2nd file of size BLOCKSIZE under child directory and expect quota exceeded exception
Path createdFile2 = new Path(child, "created_file2.data");
long file2Len = Blocksize;
try
{
DFSTestUtil.CreateFile(dfs, createdFile2, bufLen, file2Len, Blocksize, replication
, seed);
NUnit.Framework.Assert.Fail("Should have failed with QuotaByStorageTypeExceededException "
);
}
catch (Exception t)
{
Log.Info("Got expected exception ", t);
currentSSDConsumed = fnode.AsDirectory().GetDirectoryWithQuotaFeature().GetSpaceConsumed
().GetTypeSpaces().Get(StorageType.Ssd);
NUnit.Framework.Assert.AreEqual(file1Len, currentSSDConsumed);
}
}
internal static Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot GetSnapshot
(INodesInPath inodesInPath, string name, int index)
{
if (name == null)
{
return(null);
}
INode inode = inodesInPath.GetINode(index - 1);
return(inode.AsDirectory().GetSnapshot(DFSUtil.String2Bytes(name)));
}
/// <exception cref="System.Exception"/>
public virtual void TestQuotaByStorageTypeWithFileCreateDelete()
{
Path foo = new Path(dir, "foo");
Path createdFile1 = new Path(foo, "created_file1.data");
dfs.Mkdirs(foo);
dfs.SetStoragePolicy(foo, HdfsConstants.OnessdStoragePolicyName);
// set quota by storage type on directory "foo"
dfs.SetQuotaByStorageType(foo, StorageType.Ssd, Blocksize * 10);
INode fnode = fsdir.GetINode4Write(foo.ToString());
NUnit.Framework.Assert.IsTrue(fnode.IsDirectory());
NUnit.Framework.Assert.IsTrue(fnode.IsQuotaSet());
// Create file of size 2.5 * BLOCKSIZE under directory "foo"
long file1Len = Blocksize * 2 + Blocksize / 2;
int bufLen = Blocksize / 16;
DFSTestUtil.CreateFile(dfs, createdFile1, bufLen, file1Len, Blocksize, Replication
, seed);
// Verify space consumed and remaining quota
long storageTypeConsumed = fnode.AsDirectory().GetDirectoryWithQuotaFeature().GetSpaceConsumed
().GetTypeSpaces().Get(StorageType.Ssd);
NUnit.Framework.Assert.AreEqual(file1Len, storageTypeConsumed);
// Delete file and verify the consumed space of the storage type is updated
dfs.Delete(createdFile1, false);
storageTypeConsumed = fnode.AsDirectory().GetDirectoryWithQuotaFeature().GetSpaceConsumed
().GetTypeSpaces().Get(StorageType.Ssd);
NUnit.Framework.Assert.AreEqual(0, storageTypeConsumed);
QuotaCounts counts = new QuotaCounts.Builder().Build();
fnode.ComputeQuotaUsage(fsn.GetBlockManager().GetStoragePolicySuite(), counts, true
);
NUnit.Framework.Assert.AreEqual(fnode.DumpTreeRecursively().ToString(), 0, counts
.GetTypeSpaces().Get(StorageType.Ssd));
ContentSummary cs = dfs.GetContentSummary(foo);
NUnit.Framework.Assert.AreEqual(cs.GetSpaceConsumed(), 0);
NUnit.Framework.Assert.AreEqual(cs.GetTypeConsumed(StorageType.Ssd), 0);
NUnit.Framework.Assert.AreEqual(cs.GetTypeConsumed(StorageType.Disk), 0);
}
public virtual void TestQuotaByStorageTypePersistenceInFsImage()
{
string MethodName = GenericTestUtils.GetMethodName();
Path testDir = new Path(dir, MethodName);
Path createdFile1 = new Path(testDir, "created_file1.data");
dfs.Mkdirs(testDir);
// set storage policy on testDir to ONESSD
dfs.SetStoragePolicy(testDir, HdfsConstants.OnessdStoragePolicyName);
// set quota by storage type on testDir
long SsdQuota = Blocksize * 4;
dfs.SetQuotaByStorageType(testDir, StorageType.Ssd, SsdQuota);
INode testDirNode = fsdir.GetINode4Write(testDir.ToString());
NUnit.Framework.Assert.IsTrue(testDirNode.IsDirectory());
NUnit.Framework.Assert.IsTrue(testDirNode.IsQuotaSet());
// Create file of size 2 * BLOCKSIZE under testDir
long file1Len = Blocksize * 2;
int bufLen = Blocksize / 16;
DFSTestUtil.CreateFile(dfs, createdFile1, bufLen, file1Len, Blocksize, Replication
, seed);
// Verify SSD consumed before namenode restart
long ssdConsumed = testDirNode.AsDirectory().GetDirectoryWithQuotaFeature().GetSpaceConsumed
().GetTypeSpaces().Get(StorageType.Ssd);
NUnit.Framework.Assert.AreEqual(file1Len, ssdConsumed);
// Restart the namenode with checkpoint to make sure fsImage is correct
dfs.SetSafeMode(HdfsConstants.SafeModeAction.SafemodeEnter);
dfs.SaveNamespace();
dfs.SetSafeMode(HdfsConstants.SafeModeAction.SafemodeLeave);
cluster.RestartNameNode(true);
RefreshClusterState();
INode testDirNodeAfterNNRestart = fsdir.GetINode4Write(testDir.ToString());
NUnit.Framework.Assert.IsTrue(testDirNode.IsDirectory());
NUnit.Framework.Assert.IsTrue(testDirNode.IsQuotaSet());
QuotaCounts qc = testDirNodeAfterNNRestart.GetQuotaCounts();
NUnit.Framework.Assert.AreEqual(SsdQuota, qc.GetTypeSpace(StorageType.Ssd));
foreach (StorageType t in StorageType.GetTypesSupportingQuota())
{
if (t != StorageType.Ssd)
{
NUnit.Framework.Assert.AreEqual(HdfsConstants.QuotaReset, qc.GetTypeSpace(t));
}
}
long ssdConsumedAfterNNRestart = testDirNodeAfterNNRestart.AsDirectory().GetDirectoryWithQuotaFeature
().GetSpaceConsumed().GetTypeSpaces().Get(StorageType.Ssd);
NUnit.Framework.Assert.AreEqual(file1Len, ssdConsumedAfterNNRestart);
}
/// <summary>
/// <inheritDoc/>
/// <br/>
/// To destroy a DstReference node, we first remove its link with the
/// referred node. If the reference number of the referred node is <= 0, we
/// destroy the subtree of the referred node. Otherwise, we clean the
/// referred node's subtree and delete everything created after the last
/// rename operation, i.e., everything outside of the scope of the prior
/// WithName nodes.
/// </summary>
public override void DestroyAndCollectBlocks(BlockStoragePolicySuite bsps, INode.BlocksMapUpdateInfo
collectedBlocks, IList <INode> removedINodes)
{
if (RemoveReference(this) <= 0)
{
GetReferredINode().DestroyAndCollectBlocks(bsps, collectedBlocks, removedINodes);
}
else
{
// we will clean everything, including files, directories, and
// snapshots, that were created after this prior snapshot
int prior = GetPriorSnapshot(this);
// prior must be non-null, otherwise we do not have any previous
// WithName nodes, and the reference number will be 0.
Preconditions.CheckState(prior != Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot
.NoSnapshotId);
// identify the snapshot created after prior
int snapshot = GetSelfSnapshot(prior);
INode referred = GetReferredINode().AsReference().GetReferredINode();
if (referred.IsFile())
{
// if referred is a file, it must be a file with snapshot since we did
// recordModification before the rename
INodeFile file = referred.AsFile();
Preconditions.CheckState(file.IsWithSnapshot());
// make sure we mark the file as deleted
file.GetFileWithSnapshotFeature().DeleteCurrentFile();
// when calling cleanSubtree of the referred node, since we
// compute quota usage updates before calling this destroy
// function, we use true for countDiffChange
referred.CleanSubtree(bsps, snapshot, prior, collectedBlocks, removedINodes);
}
else
{
if (referred.IsDirectory())
{
// similarly, if referred is a directory, it must be an
// INodeDirectory with snapshot
INodeDirectory dir = referred.AsDirectory();
Preconditions.CheckState(dir.IsWithSnapshot());
try
{
DirectoryWithSnapshotFeature.DestroyDstSubtree(bsps, dir, snapshot, prior, collectedBlocks
, removedINodes);
}
catch (QuotaExceededException e)
{
Log.Error("should not exceed quota while snapshot deletion", e);
}
}
}
}
}
/// <exception cref="System.Exception"/>
public virtual void TestQuotaByStorageTypeWithFileCreateTruncate()
{
Path foo = new Path(dir, "foo");
Path createdFile1 = new Path(foo, "created_file1.data");
dfs.Mkdirs(foo);
// set storage policy on directory "foo" to ONESSD
dfs.SetStoragePolicy(foo, HdfsConstants.OnessdStoragePolicyName);
// set quota by storage type on directory "foo"
dfs.SetQuotaByStorageType(foo, StorageType.Ssd, Blocksize * 4);
INode fnode = fsdir.GetINode4Write(foo.ToString());
NUnit.Framework.Assert.IsTrue(fnode.IsDirectory());
NUnit.Framework.Assert.IsTrue(fnode.IsQuotaSet());
// Create file of size 2 * BLOCKSIZE under directory "foo"
long file1Len = Blocksize * 2;
int bufLen = Blocksize / 16;
DFSTestUtil.CreateFile(dfs, createdFile1, bufLen, file1Len, Blocksize, Replication
, seed);
// Verify SSD consumed before truncate
long ssdConsumed = fnode.AsDirectory().GetDirectoryWithQuotaFeature().GetSpaceConsumed
().GetTypeSpaces().Get(StorageType.Ssd);
NUnit.Framework.Assert.AreEqual(file1Len, ssdConsumed);
// Truncate file to 1 * BLOCKSIZE
int newFile1Len = Blocksize * 1;
dfs.Truncate(createdFile1, newFile1Len);
// Verify SSD consumed after truncate
ssdConsumed = fnode.AsDirectory().GetDirectoryWithQuotaFeature().GetSpaceConsumed
().GetTypeSpaces().Get(StorageType.Ssd);
NUnit.Framework.Assert.AreEqual(newFile1Len, ssdConsumed);
ContentSummary cs = dfs.GetContentSummary(foo);
NUnit.Framework.Assert.AreEqual(cs.GetSpaceConsumed(), newFile1Len * Replication);
NUnit.Framework.Assert.AreEqual(cs.GetTypeConsumed(StorageType.Ssd), newFile1Len);
NUnit.Framework.Assert.AreEqual(cs.GetTypeConsumed(StorageType.Disk), newFile1Len
* 2);
}
/// <summary>
/// Both traditional space quota and the storage type quota for SSD are set and
/// not exceeded.
/// </summary>
/// <exception cref="System.Exception"/>
public virtual void TestQuotaByStorageTypeWithTraditionalQuota()
{
Path foo = new Path(dir, "foo");
dfs.Mkdirs(foo);
dfs.SetStoragePolicy(foo, HdfsConstants.OnessdStoragePolicyName);
dfs.SetQuotaByStorageType(foo, StorageType.Ssd, Blocksize * 10);
dfs.SetQuota(foo, long.MaxValue - 1, Replication * Blocksize * 10);
INode fnode = fsdir.GetINode4Write(foo.ToString());
NUnit.Framework.Assert.IsTrue(fnode.IsDirectory());
NUnit.Framework.Assert.IsTrue(fnode.IsQuotaSet());
Path createdFile = new Path(foo, "created_file.data");
long fileLen = Blocksize * 2 + Blocksize / 2;
DFSTestUtil.CreateFile(dfs, createdFile, Blocksize / 16, fileLen, Blocksize, Replication
, seed);
QuotaCounts cnt = fnode.AsDirectory().GetDirectoryWithQuotaFeature().GetSpaceConsumed
();
NUnit.Framework.Assert.AreEqual(2, cnt.GetNameSpace());
NUnit.Framework.Assert.AreEqual(fileLen * Replication, cnt.GetStorageSpace());
dfs.Delete(createdFile, true);
QuotaCounts cntAfterDelete = fnode.AsDirectory().GetDirectoryWithQuotaFeature().GetSpaceConsumed
();
NUnit.Framework.Assert.AreEqual(1, cntAfterDelete.GetNameSpace());
NUnit.Framework.Assert.AreEqual(0, cntAfterDelete.GetStorageSpace());
// Validate the computeQuotaUsage()
QuotaCounts counts = new QuotaCounts.Builder().Build();
fnode.ComputeQuotaUsage(fsn.GetBlockManager().GetStoragePolicySuite(), counts, true
);
NUnit.Framework.Assert.AreEqual(fnode.DumpTreeRecursively().ToString(), 1, counts
.GetNameSpace());
NUnit.Framework.Assert.AreEqual(fnode.DumpTreeRecursively().ToString(), 0, counts
.GetStorageSpace());
}
/// <summary>Cast INode to INodeDirectory.</summary>
/// <exception cref="System.IO.FileNotFoundException"/>
/// <exception cref="Org.Apache.Hadoop.FS.PathIsNotDirectoryException"/>
public static Org.Apache.Hadoop.Hdfs.Server.Namenode.INodeDirectory ValueOf(INode
inode, object path)
{
if (inode == null)
{
throw new FileNotFoundException("Directory does not exist: " + DFSUtil.Path2String
(path));
}
if (!inode.IsDirectory())
{
throw new PathIsNotDirectoryException(DFSUtil.Path2String(path));
}
return(inode.AsDirectory());
}
/// <exception cref="System.Exception"/>
public virtual void TestQuotaByStorageTypeWithFileCreateRename()
{
Path foo = new Path(dir, "foo");
dfs.Mkdirs(foo);
Path createdFile1foo = new Path(foo, "created_file1.data");
Path bar = new Path(dir, "bar");
dfs.Mkdirs(bar);
Path createdFile1bar = new Path(bar, "created_file1.data");
// set storage policy on directory "foo" and "bar" to ONESSD
dfs.SetStoragePolicy(foo, HdfsConstants.OnessdStoragePolicyName);
dfs.SetStoragePolicy(bar, HdfsConstants.OnessdStoragePolicyName);
// set quota by storage type on directory "foo"
dfs.SetQuotaByStorageType(foo, StorageType.Ssd, Blocksize * 4);
dfs.SetQuotaByStorageType(bar, StorageType.Ssd, Blocksize * 2);
INode fnode = fsdir.GetINode4Write(foo.ToString());
NUnit.Framework.Assert.IsTrue(fnode.IsDirectory());
NUnit.Framework.Assert.IsTrue(fnode.IsQuotaSet());
// Create file of size 3 * BLOCKSIZE under directory "foo"
long file1Len = Blocksize * 3;
int bufLen = Blocksize / 16;
DFSTestUtil.CreateFile(dfs, createdFile1foo, bufLen, file1Len, Blocksize, Replication
, seed);
// Verify space consumed and remaining quota
long ssdConsumed = fnode.AsDirectory().GetDirectoryWithQuotaFeature().GetSpaceConsumed
().GetTypeSpaces().Get(StorageType.Ssd);
NUnit.Framework.Assert.AreEqual(file1Len, ssdConsumed);
// move file from foo to bar
try
{
dfs.Rename(createdFile1foo, createdFile1bar);
NUnit.Framework.Assert.Fail("Should have failed with QuotaByStorageTypeExceededException "
);
}
catch (Exception t)
{
Log.Info("Got expected exception ", t);
}
ContentSummary cs = dfs.GetContentSummary(foo);
NUnit.Framework.Assert.AreEqual(cs.GetSpaceConsumed(), file1Len * Replication);
NUnit.Framework.Assert.AreEqual(cs.GetTypeConsumed(StorageType.Ssd), file1Len);
NUnit.Framework.Assert.AreEqual(cs.GetTypeConsumed(StorageType.Disk), file1Len *
2);
}
/// <exception cref="System.IO.IOException"/>
internal static void UnprotectedSetStoragePolicy(FSDirectory fsd, BlockManager bm
, INodesInPath iip, byte policyId)
{
System.Diagnostics.Debug.Assert(fsd.HasWriteLock());
INode inode = iip.GetLastINode();
if (inode == null)
{
throw new FileNotFoundException("File/Directory does not exist: " + iip.GetPath()
);
}
int snapshotId = iip.GetLatestSnapshotId();
if (inode.IsFile())
{
BlockStoragePolicy newPolicy = bm.GetStoragePolicy(policyId);
if (newPolicy.IsCopyOnCreateFile())
{
throw new HadoopIllegalArgumentException("Policy " + newPolicy + " cannot be set after file creation."
);
}
BlockStoragePolicy currentPolicy = bm.GetStoragePolicy(inode.GetLocalStoragePolicyID
());
if (currentPolicy != null && currentPolicy.IsCopyOnCreateFile())
{
throw new HadoopIllegalArgumentException("Existing policy " + currentPolicy.GetName
() + " cannot be changed after file creation.");
}
inode.AsFile().SetStoragePolicyID(policyId, snapshotId);
}
else
{
if (inode.IsDirectory())
{
SetDirStoragePolicy(fsd, inode.AsDirectory(), policyId, snapshotId);
}
else
{
throw new FileNotFoundException(iip.GetPath() + " is not a file or directory");
}
}
}
internal virtual bool AddSourceToDestination()
{
INode dstParent = dstParentIIP.GetLastINode();
byte[] dstChildName = dstIIP.GetLastLocalName();
INode toDst;
if (withCount == null)
{
srcChild.SetLocalName(dstChildName);
toDst = srcChild;
}
else
{
withCount.GetReferredINode().SetLocalName(dstChildName);
toDst = new INodeReference.DstReference(dstParent.AsDirectory(), withCount, dstIIP
.GetLatestSnapshotId());
}
return(fsd.AddLastINodeNoQuotaCheck(dstParentIIP, toDst) != null);
}
/// <exception cref="System.IO.IOException"/>
private void Save(OutputStream @out, INode n)
{
if (n.IsDirectory())
{
Save(@out, n.AsDirectory());
}
else
{
if (n.IsFile())
{
Save(@out, n.AsFile());
}
else
{
if (n.IsSymlink())
{
Save(@out, n.AsSymlink());
}
}
}
}
/// <summary>Test allow-snapshot operation.</summary>
/// <exception cref="System.Exception"/>
public virtual void TestAllowSnapshot()
{
string pathStr = sub1.ToString();
INode before = fsdir.GetINode(pathStr);
// Before a directory is snapshottable
NUnit.Framework.Assert.IsFalse(before.AsDirectory().IsSnapshottable());
// After a directory is snapshottable
Path path = new Path(pathStr);
hdfs.AllowSnapshot(path);
{
INode after = fsdir.GetINode(pathStr);
NUnit.Framework.Assert.IsTrue(after.AsDirectory().IsSnapshottable());
}
hdfs.DisallowSnapshot(path);
{
INode after = fsdir.GetINode(pathStr);
NUnit.Framework.Assert.IsFalse(after.AsDirectory().IsSnapshottable());
}
}
/// <summary>Test if the quota can be correctly updated for create file</summary>
/// <exception cref="System.Exception"/>
public virtual void TestQuotaUpdateWithFileCreate()
{
Path foo = new Path(dir, "foo");
Path createdFile = new Path(foo, "created_file.data");
dfs.Mkdirs(foo);
dfs.SetQuota(foo, long.MaxValue - 1, long.MaxValue - 1);
long fileLen = Blocksize * 2 + Blocksize / 2;
DFSTestUtil.CreateFile(dfs, createdFile, Blocksize / 16, fileLen, Blocksize, Replication
, seed);
INode fnode = fsdir.GetINode4Write(foo.ToString());
NUnit.Framework.Assert.IsTrue(fnode.IsDirectory());
NUnit.Framework.Assert.IsTrue(fnode.IsQuotaSet());
QuotaCounts cnt = fnode.AsDirectory().GetDirectoryWithQuotaFeature().GetSpaceConsumed
();
NUnit.Framework.Assert.AreEqual(2, cnt.GetNameSpace());
NUnit.Framework.Assert.AreEqual(fileLen * Replication, cnt.GetStorageSpace());
}
/// <summary>
/// When destroying a reference node (WithName or DstReference), we call this
/// method to identify the snapshot which is the latest snapshot before the
/// reference node's creation.
/// </summary>
internal static int GetPriorSnapshot(Org.Apache.Hadoop.Hdfs.Server.Namenode.INodeReference
@ref)
{
INodeReference.WithCount wc = (INodeReference.WithCount)@ref.GetReferredINode();
INodeReference.WithName wn = null;
if (@ref is INodeReference.DstReference)
{
wn = wc.GetLastWithName();
}
else
{
if (@ref is INodeReference.WithName)
{
wn = wc.GetPriorWithName((INodeReference.WithName)@ref);
}
}
if (wn != null)
{
INode referred = wc.GetReferredINode();
if (referred.IsFile() && referred.AsFile().IsWithSnapshot())
{
return(referred.AsFile().GetDiffs().GetPrior(wn.lastSnapshotId));
}
else
{
if (referred.IsDirectory())
{
DirectoryWithSnapshotFeature sf = referred.AsDirectory().GetDirectoryWithSnapshotFeature
();
if (sf != null)
{
return(sf.GetDiffs().GetPrior(wn.lastSnapshotId));
}
}
}
}
return(Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot.NoSnapshotId);
}
private int GetSelfSnapshot()
{
INode referred = GetReferredINode().AsReference().GetReferredINode();
int snapshot = Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot.NoSnapshotId;
if (referred.IsFile() && referred.AsFile().IsWithSnapshot())
{
snapshot = referred.AsFile().GetDiffs().GetPrior(lastSnapshotId);
}
else
{
if (referred.IsDirectory())
{
DirectoryWithSnapshotFeature sf = referred.AsDirectory().GetDirectoryWithSnapshotFeature
();
if (sf != null)
{
snapshot = sf.GetDiffs().GetPrior(lastSnapshotId);
}
}
}
return(snapshot);
}
/// <exception cref="System.Exception"/>
public virtual void TestQuotaByStorageTypeParentOffChildOff()
{
Path parent = new Path(dir, "parent");
Path child = new Path(parent, "child");
dfs.Mkdirs(parent);
dfs.Mkdirs(child);
dfs.SetStoragePolicy(parent, HdfsConstants.OnessdStoragePolicyName);
// Create file of size 2.5 * BLOCKSIZE under child directory.
// Since both parent and child directory do not have SSD quota set,
// expect succeed without exception
Path createdFile1 = new Path(child, "created_file1.data");
long file1Len = Blocksize * 2 + Blocksize / 2;
int bufLen = Blocksize / 16;
DFSTestUtil.CreateFile(dfs, createdFile1, bufLen, file1Len, Blocksize, Replication
, seed);
// Verify SSD usage at the root level as both parent/child don't have DirectoryWithQuotaFeature
INode fnode = fsdir.GetINode4Write("/");
long ssdConsumed = fnode.AsDirectory().GetDirectoryWithQuotaFeature().GetSpaceConsumed
().GetTypeSpaces().Get(StorageType.Ssd);
NUnit.Framework.Assert.AreEqual(file1Len, ssdConsumed);
}
/// <exception cref="System.Exception"/>
private void TestQuotaByStorageTypeOrTraditionalQuotaExceededCase(long storageSpaceQuotaInBlocks
, long ssdQuotaInBlocks, long testFileLenInBlocks, short replication)
{
string MethodName = GenericTestUtils.GetMethodName();
Path testDir = new Path(dir, MethodName);
dfs.Mkdirs(testDir);
dfs.SetStoragePolicy(testDir, HdfsConstants.OnessdStoragePolicyName);
long ssdQuota = Blocksize * ssdQuotaInBlocks;
long storageSpaceQuota = Blocksize * storageSpaceQuotaInBlocks;
dfs.SetQuota(testDir, long.MaxValue - 1, storageSpaceQuota);
dfs.SetQuotaByStorageType(testDir, StorageType.Ssd, ssdQuota);
INode testDirNode = fsdir.GetINode4Write(testDir.ToString());
NUnit.Framework.Assert.IsTrue(testDirNode.IsDirectory());
NUnit.Framework.Assert.IsTrue(testDirNode.IsQuotaSet());
Path createdFile = new Path(testDir, "created_file.data");
long fileLen = testFileLenInBlocks * Blocksize;
try
{
DFSTestUtil.CreateFile(dfs, createdFile, Blocksize / 16, fileLen, Blocksize, replication
, seed);
NUnit.Framework.Assert.Fail("Should have failed with DSQuotaExceededException or "
+ "QuotaByStorageTypeExceededException ");
}
catch (Exception t)
{
Log.Info("Got expected exception ", t);
long currentSSDConsumed = testDirNode.AsDirectory().GetDirectoryWithQuotaFeature(
).GetSpaceConsumed().GetTypeSpaces().Get(StorageType.Ssd);
NUnit.Framework.Assert.AreEqual(Math.Min(ssdQuota, storageSpaceQuota / replication
), currentSSDConsumed);
}
}
/// <summary>
/// Get a partial listing of the indicated directory
/// We will stop when any of the following conditions is met:
/// 1) this.lsLimit files have been added
/// 2) needLocation is true AND enough files have been added such
/// that at least this.lsLimit block locations are in the response
/// </summary>
/// <param name="fsd">FSDirectory</param>
/// <param name="iip">
/// the INodesInPath instance containing all the INodes along the
/// path
/// </param>
/// <param name="src">the directory name</param>
/// <param name="startAfter">the name to start listing after</param>
/// <param name="needLocation">if block locations are returned</param>
/// <returns>a partial listing starting after startAfter</returns>
/// <exception cref="System.IO.IOException"/>
private static DirectoryListing GetListing(FSDirectory fsd, INodesInPath iip, string
src, byte[] startAfter, bool needLocation, bool isSuperUser)
{
string srcs = FSDirectory.NormalizePath(src);
bool isRawPath = FSDirectory.IsReservedRawName(src);
fsd.ReadLock();
try
{
if (srcs.EndsWith(HdfsConstants.SeparatorDotSnapshotDir))
{
return(GetSnapshotsListing(fsd, srcs, startAfter));
}
int snapshot = iip.GetPathSnapshotId();
INode targetNode = iip.GetLastINode();
if (targetNode == null)
{
return(null);
}
byte parentStoragePolicy = isSuperUser ? targetNode.GetStoragePolicyID() : BlockStoragePolicySuite
.IdUnspecified;
if (!targetNode.IsDirectory())
{
return(new DirectoryListing(new HdfsFileStatus[] { CreateFileStatus(fsd, src, HdfsFileStatus
.EmptyName, targetNode, needLocation, parentStoragePolicy, snapshot, isRawPath,
iip) }, 0));
}
INodeDirectory dirInode = targetNode.AsDirectory();
ReadOnlyList <INode> contents = dirInode.GetChildrenList(snapshot);
int startChild = INodeDirectory.NextChild(contents, startAfter);
int totalNumChildren = contents.Size();
int numOfListing = Math.Min(totalNumChildren - startChild, fsd.GetLsLimit());
int locationBudget = fsd.GetLsLimit();
int listingCnt = 0;
HdfsFileStatus[] listing = new HdfsFileStatus[numOfListing];
for (int i = 0; i < numOfListing && locationBudget > 0; i++)
{
INode cur = contents.Get(startChild + i);
byte curPolicy = isSuperUser && !cur.IsSymlink() ? cur.GetLocalStoragePolicyID() :
BlockStoragePolicySuite.IdUnspecified;
listing[i] = CreateFileStatus(fsd, src, cur.GetLocalNameBytes(), cur, needLocation
, GetStoragePolicyID(curPolicy, parentStoragePolicy), snapshot, isRawPath, iip);
listingCnt++;
if (needLocation)
{
// Once we hit lsLimit locations, stop.
// This helps to prevent excessively large response payloads.
// Approximate #locations with locatedBlockCount() * repl_factor
LocatedBlocks blks = ((HdfsLocatedFileStatus)listing[i]).GetBlockLocations();
locationBudget -= (blks == null) ? 0 : blks.LocatedBlockCount() * listing[i].GetReplication
();
}
}
// truncate return array if necessary
if (listingCnt < numOfListing)
{
listing = Arrays.CopyOf(listing, listingCnt);
}
return(new DirectoryListing(listing, totalNumChildren - startChild - listingCnt));
}
finally
{
fsd.ReadUnlock();
}
}
/// <summary>Retrieve existing INodes from a path.</summary>
/// <remarks>
/// Retrieve existing INodes from a path. For non-snapshot path,
/// the number of INodes is equal to the number of path components. For
/// snapshot path (e.g., /foo/.snapshot/s1/bar), the number of INodes is
/// (number_of_path_components - 1).
/// An UnresolvedPathException is always thrown when an intermediate path
/// component refers to a symbolic link. If the final path component refers
/// to a symbolic link then an UnresolvedPathException is only thrown if
/// resolveLink is true.
/// <p>
/// Example: <br />
/// Given the path /c1/c2/c3 where only /c1/c2 exists, resulting in the
/// following path components: ["","c1","c2","c3"]
/// <p>
/// <code>getExistingPathINodes(["","c1","c2"])</code> should fill
/// the array with [rootINode,c1,c2], <br />
/// <code>getExistingPathINodes(["","c1","c2","c3"])</code> should
/// fill the array with [rootINode,c1,c2,null]
/// </remarks>
/// <param name="startingDir">the starting directory</param>
/// <param name="components">array of path component name</param>
/// <param name="resolveLink">
/// indicates whether UnresolvedLinkException should
/// be thrown when the path refers to a symbolic link.
/// </param>
/// <returns>the specified number of existing INodes in the path</returns>
/// <exception cref="Org.Apache.Hadoop.FS.UnresolvedLinkException"/>
internal static Org.Apache.Hadoop.Hdfs.Server.Namenode.INodesInPath Resolve(INodeDirectory
startingDir, byte[][] components, bool resolveLink)
{
Preconditions.CheckArgument(startingDir.CompareTo(components[0]) == 0);
INode curNode = startingDir;
int count = 0;
int inodeNum = 0;
INode[] inodes = new INode[components.Length];
bool isSnapshot = false;
int snapshotId = Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot.CurrentStateId;
while (count < components.Length && curNode != null)
{
bool lastComp = (count == components.Length - 1);
inodes[inodeNum++] = curNode;
bool isRef = curNode.IsReference();
bool isDir = curNode.IsDirectory();
INodeDirectory dir = isDir ? curNode.AsDirectory() : null;
if (!isRef && isDir && dir.IsWithSnapshot())
{
//if the path is a non-snapshot path, update the latest snapshot.
if (!isSnapshot && ShouldUpdateLatestId(dir.GetDirectoryWithSnapshotFeature().GetLastSnapshotId
(), snapshotId))
{
snapshotId = dir.GetDirectoryWithSnapshotFeature().GetLastSnapshotId();
}
}
else
{
if (isRef && isDir && !lastComp)
{
// If the curNode is a reference node, need to check its dstSnapshot:
// 1. if the existing snapshot is no later than the dstSnapshot (which
// is the latest snapshot in dst before the rename), the changes
// should be recorded in previous snapshots (belonging to src).
// 2. however, if the ref node is already the last component, we still
// need to know the latest snapshot among the ref node's ancestors,
// in case of processing a deletion operation. Thus we do not overwrite
// the latest snapshot if lastComp is true. In case of the operation is
// a modification operation, we do a similar check in corresponding
// recordModification method.
if (!isSnapshot)
{
int dstSnapshotId = curNode.AsReference().GetDstSnapshotId();
if (snapshotId == Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot.CurrentStateId ||
(dstSnapshotId != Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot.CurrentStateId &&
dstSnapshotId >= snapshotId))
{
// no snapshot in dst tree of rename
// the above scenario
int lastSnapshot = Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot.CurrentStateId;
DirectoryWithSnapshotFeature sf;
if (curNode.IsDirectory() && (sf = curNode.AsDirectory().GetDirectoryWithSnapshotFeature
()) != null)
{
lastSnapshot = sf.GetLastSnapshotId();
}
snapshotId = lastSnapshot;
}
}
}
}
if (curNode.IsSymlink() && (!lastComp || resolveLink))
{
string path = ConstructPath(components, 0, components.Length);
string preceding = ConstructPath(components, 0, count);
string remainder = ConstructPath(components, count + 1, components.Length);
string link = DFSUtil.Bytes2String(components[count]);
string target = curNode.AsSymlink().GetSymlinkString();
if (Log.IsDebugEnabled())
{
Log.Debug("UnresolvedPathException " + " path: " + path + " preceding: " + preceding
+ " count: " + count + " link: " + link + " target: " + target + " remainder: "
+ remainder);
}
throw new UnresolvedPathException(path, preceding, remainder, target);
}
if (lastComp || !isDir)
{
break;
}
byte[] childName = components[count + 1];
// check if the next byte[] in components is for ".snapshot"
if (IsDotSnapshotDir(childName) && dir.IsSnapshottable())
{
// skip the ".snapshot" in components
count++;
isSnapshot = true;
// check if ".snapshot" is the last element of components
if (count == components.Length - 1)
{
break;
}
// Resolve snapshot root
Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot s = dir.GetSnapshot(components
[count + 1]);
if (s == null)
{
curNode = null;
}
else
{
// snapshot not found
curNode = s.GetRoot();
snapshotId = s.GetId();
}
}
else
{
// normal case, and also for resolving file/dir under snapshot root
curNode = dir.GetChild(childName, isSnapshot ? snapshotId : Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot
.CurrentStateId);
}
count++;
}
if (isSnapshot && !IsDotSnapshotDir(components[components.Length - 1]))
{
// for snapshot path shrink the inode array. however, for path ending with
// .snapshot, still keep last the null inode in the array
INode[] newNodes = new INode[components.Length - 1];
System.Array.Copy(inodes, 0, newNodes, 0, newNodes.Length);
inodes = newNodes;
}
return(new Org.Apache.Hadoop.Hdfs.Server.Namenode.INodesInPath(inodes, components
, isSnapshot, snapshotId));
}