/// <summary>
/// Verify quota for rename operation where srcInodes[srcInodes.length-1] moves
/// dstInodes[dstInodes.length-1]
/// </summary>
/// <exception cref="Org.Apache.Hadoop.Hdfs.Protocol.QuotaExceededException"/>
private static void VerifyQuotaForRename(FSDirectory fsd, INodesInPath src, INodesInPath
dst)
{
if (!fsd.GetFSNamesystem().IsImageLoaded() || fsd.ShouldSkipQuotaChecks())
{
// Do not check quota if edits log is still being processed
return;
}
int i = 0;
while (src.GetINode(i) == dst.GetINode(i))
{
i++;
}
// src[i - 1] is the last common ancestor.
BlockStoragePolicySuite bsps = fsd.GetBlockStoragePolicySuite();
QuotaCounts delta = src.GetLastINode().ComputeQuotaUsage(bsps);
// Reduce the required quota by dst that is being removed
INode dstINode = dst.GetLastINode();
if (dstINode != null)
{
delta.Subtract(dstINode.ComputeQuotaUsage(bsps));
}
FSDirectory.VerifyQuota(dst, dst.Length() - 1, delta, src.GetINode(i - 1));
}
/// <summary>for normal (non-snapshot) file.</summary>
/// <exception cref="System.Exception"/>
public virtual void TestNonSnapshotPathINodes()
{
// Get the inodes by resolving the path of a normal file
string[] names = INode.GetPathNames(file1.ToString());
byte[][] components = INode.GetPathComponents(names);
INodesInPath nodesInPath = INodesInPath.Resolve(fsdir.rootDir, components, false);
// The number of inodes should be equal to components.length
NUnit.Framework.Assert.AreEqual(nodesInPath.Length(), components.Length);
// The returned nodesInPath should be non-snapshot
AssertSnapshot(nodesInPath, false, null, -1);
// The last INode should be associated with file1
NUnit.Framework.Assert.IsTrue("file1=" + file1 + ", nodesInPath=" + nodesInPath,
nodesInPath.GetINode(components.Length - 1) != null);
NUnit.Framework.Assert.AreEqual(nodesInPath.GetINode(components.Length - 1).GetFullPathName
(), file1.ToString());
NUnit.Framework.Assert.AreEqual(nodesInPath.GetINode(components.Length - 2).GetFullPathName
(), sub1.ToString());
NUnit.Framework.Assert.AreEqual(nodesInPath.GetINode(components.Length - 3).GetFullPathName
(), dir.ToString());
nodesInPath = INodesInPath.Resolve(fsdir.rootDir, components, false);
NUnit.Framework.Assert.AreEqual(nodesInPath.Length(), components.Length);
AssertSnapshot(nodesInPath, false, null, -1);
NUnit.Framework.Assert.AreEqual(nodesInPath.GetLastINode().GetFullPathName(), file1
.ToString());
}
/// <summary>
/// Checks file system limits (max component length and max directory items)
/// during a rename operation.
/// </summary>
/// <exception cref="Org.Apache.Hadoop.Hdfs.Protocol.FSLimitException.PathComponentTooLongException
/// "/>
/// <exception cref="Org.Apache.Hadoop.Hdfs.Protocol.FSLimitException.MaxDirectoryItemsExceededException
/// "/>
internal static void VerifyFsLimitsForRename(FSDirectory fsd, INodesInPath srcIIP
, INodesInPath dstIIP)
{
byte[] dstChildName = dstIIP.GetLastLocalName();
string parentPath = dstIIP.GetParentPath();
fsd.VerifyMaxComponentLength(dstChildName, parentPath);
// Do not enforce max directory items if renaming within same directory.
if (srcIIP.GetINode(-2) != dstIIP.GetINode(-2))
{
fsd.VerifyMaxDirItems(dstIIP.GetINode(-2).AsDirectory(), parentPath);
}
}
/// <summary>for snapshot file after deleting the original file.</summary>
/// <exception cref="System.Exception"/>
public virtual void TestSnapshotPathINodesAfterDeletion()
{
// Create a snapshot for the dir, and check the inodes for the path
// pointing to a snapshot file
hdfs.AllowSnapshot(sub1);
hdfs.CreateSnapshot(sub1, "s2");
// Delete the original file /TestSnapshot/sub1/file1
hdfs.Delete(file1, false);
Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot snapshot;
{
// Resolve the path for the snapshot file
// /TestSnapshot/sub1/.snapshot/s2/file1
string snapshotPath = sub1.ToString() + "/.snapshot/s2/file1";
string[] names = INode.GetPathNames(snapshotPath);
byte[][] components = INode.GetPathComponents(names);
INodesInPath nodesInPath = INodesInPath.Resolve(fsdir.rootDir, components, false);
// Length of inodes should be (components.length - 1), since we will ignore
// ".snapshot"
NUnit.Framework.Assert.AreEqual(nodesInPath.Length(), components.Length - 1);
// SnapshotRootIndex should be 3: {root, Testsnapshot, sub1, s2, file1}
snapshot = GetSnapshot(nodesInPath, "s2", 3);
AssertSnapshot(nodesInPath, true, snapshot, 3);
// Check the INode for file1 (snapshot file)
INode inode = nodesInPath.GetLastINode();
NUnit.Framework.Assert.AreEqual(file1.GetName(), inode.GetLocalName());
NUnit.Framework.Assert.IsTrue(inode.AsFile().IsWithSnapshot());
}
// Check the INodes for path /TestSnapshot/sub1/file1
string[] names_1 = INode.GetPathNames(file1.ToString());
byte[][] components_1 = INode.GetPathComponents(names_1);
INodesInPath nodesInPath_1 = INodesInPath.Resolve(fsdir.rootDir, components_1, false
);
// The length of inodes should be equal to components.length
NUnit.Framework.Assert.AreEqual(nodesInPath_1.Length(), components_1.Length);
// The number of non-null elements should be components.length - 1 since
// file1 has been deleted
NUnit.Framework.Assert.AreEqual(GetNumNonNull(nodesInPath_1), components_1.Length
- 1);
// The returned nodesInPath should be non-snapshot
AssertSnapshot(nodesInPath_1, false, snapshot, -1);
// The last INode should be null, and the one before should be associated
// with sub1
NUnit.Framework.Assert.IsNull(nodesInPath_1.GetINode(components_1.Length - 1));
NUnit.Framework.Assert.AreEqual(nodesInPath_1.GetINode(components_1.Length - 2).GetFullPathName
(), sub1.ToString());
NUnit.Framework.Assert.AreEqual(nodesInPath_1.GetINode(components_1.Length - 3).GetFullPathName
(), dir.ToString());
hdfs.DeleteSnapshot(sub1, "s2");
hdfs.DisallowSnapshot(sub1);
}
/// <summary>for snapshot file while adding a new file after snapshot.</summary>
/// <exception cref="System.Exception"/>
public virtual void TestSnapshotPathINodesWithAddedFile()
{
// Create a snapshot for the dir, and check the inodes for the path
// pointing to a snapshot file
hdfs.AllowSnapshot(sub1);
hdfs.CreateSnapshot(sub1, "s4");
// Add a new file /TestSnapshot/sub1/file3
Path file3 = new Path(sub1, "file3");
DFSTestUtil.CreateFile(hdfs, file3, 1024, Replication, seed);
Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot s4;
{
// Check the inodes for /TestSnapshot/sub1/.snapshot/s4/file3
string snapshotPath = sub1.ToString() + "/.snapshot/s4/file3";
string[] names = INode.GetPathNames(snapshotPath);
byte[][] components = INode.GetPathComponents(names);
INodesInPath nodesInPath = INodesInPath.Resolve(fsdir.rootDir, components, false);
// Length of inodes should be (components.length - 1), since we will ignore
// ".snapshot"
NUnit.Framework.Assert.AreEqual(nodesInPath.Length(), components.Length - 1);
// The number of non-null inodes should be components.length - 2, since
// snapshot of file3 does not exist
NUnit.Framework.Assert.AreEqual(GetNumNonNull(nodesInPath), components.Length - 2
);
s4 = GetSnapshot(nodesInPath, "s4", 3);
// SnapshotRootIndex should still be 3: {root, Testsnapshot, sub1, s4, null}
AssertSnapshot(nodesInPath, true, s4, 3);
// Check the last INode in inodes, which should be null
NUnit.Framework.Assert.IsNull(nodesInPath.GetINode(nodesInPath.Length() - 1));
}
// Check the inodes for /TestSnapshot/sub1/file3
string[] names_1 = INode.GetPathNames(file3.ToString());
byte[][] components_1 = INode.GetPathComponents(names_1);
INodesInPath nodesInPath_1 = INodesInPath.Resolve(fsdir.rootDir, components_1, false
);
// The number of inodes should be equal to components.length
NUnit.Framework.Assert.AreEqual(nodesInPath_1.Length(), components_1.Length);
// The returned nodesInPath should be non-snapshot
AssertSnapshot(nodesInPath_1, false, s4, -1);
// The last INode should be associated with file3
NUnit.Framework.Assert.AreEqual(nodesInPath_1.GetINode(components_1.Length - 1).GetFullPathName
(), file3.ToString());
NUnit.Framework.Assert.AreEqual(nodesInPath_1.GetINode(components_1.Length - 2).GetFullPathName
(), sub1.ToString());
NUnit.Framework.Assert.AreEqual(nodesInPath_1.GetINode(components_1.Length - 3).GetFullPathName
(), dir.ToString());
hdfs.DeleteSnapshot(sub1, "s4");
hdfs.DisallowSnapshot(sub1);
}
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)));
}
internal static void AssertSnapshot(INodesInPath inodesInPath, bool isSnapshot, Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot
snapshot, int index)
{
NUnit.Framework.Assert.AreEqual(isSnapshot, inodesInPath.IsSnapshot());
NUnit.Framework.Assert.AreEqual(Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot
.GetSnapshotId(isSnapshot ? snapshot : null), inodesInPath.GetPathSnapshotId());
if (!isSnapshot)
{
NUnit.Framework.Assert.AreEqual(Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot
.GetSnapshotId(snapshot), inodesInPath.GetLatestSnapshotId());
}
if (isSnapshot && index >= 0)
{
NUnit.Framework.Assert.AreEqual(typeof(Snapshot.Root), inodesInPath.GetINode(index
).GetType());
}
}
/// <summary>Concat all the blocks from srcs to trg and delete the srcs files</summary>
/// <param name="fsd">FSDirectory</param>
/// <exception cref="System.IO.IOException"/>
internal static void UnprotectedConcat(FSDirectory fsd, INodesInPath targetIIP, INodeFile
[] srcList, long timestamp)
{
System.Diagnostics.Debug.Assert(fsd.HasWriteLock());
if (NameNode.stateChangeLog.IsDebugEnabled())
{
NameNode.stateChangeLog.Debug("DIR* FSNamesystem.concat to " + targetIIP.GetPath(
));
}
INodeFile trgInode = targetIIP.GetLastINode().AsFile();
QuotaCounts deltas = ComputeQuotaDeltas(fsd, trgInode, srcList);
VerifyQuota(fsd, targetIIP, deltas);
// the target file can be included in a snapshot
trgInode.RecordModification(targetIIP.GetLatestSnapshotId());
INodeDirectory trgParent = targetIIP.GetINode(-2).AsDirectory();
trgInode.ConcatBlocks(srcList);
// since we are in the same dir - we can use same parent to remove files
int count = 0;
foreach (INodeFile nodeToRemove in srcList)
{
if (nodeToRemove != null)
{
nodeToRemove.SetBlocks(null);
nodeToRemove.GetParent().RemoveChild(nodeToRemove);
fsd.GetINodeMap().Remove(nodeToRemove);
count++;
}
}
trgInode.SetModificationTime(timestamp, targetIIP.GetLatestSnapshotId());
trgParent.UpdateModificationTime(timestamp, targetIIP.GetLatestSnapshotId());
// update quota on the parent directory with deltas
FSDirectory.UnprotectedUpdateCount(targetIIP, targetIIP.Length() - 1, deltas);
}
/// <summary>for snapshot file while modifying file after snapshot.</summary>
/// <exception cref="System.Exception"/>
public virtual void TestSnapshotPathINodesAfterModification()
{
// First check the INode for /TestSnapshot/sub1/file1
string[] names = INode.GetPathNames(file1.ToString());
byte[][] components = INode.GetPathComponents(names);
INodesInPath nodesInPath = INodesInPath.Resolve(fsdir.rootDir, components, false);
// The number of inodes should be equal to components.length
NUnit.Framework.Assert.AreEqual(nodesInPath.Length(), components.Length);
// The last INode should be associated with file1
NUnit.Framework.Assert.AreEqual(nodesInPath.GetINode(components.Length - 1).GetFullPathName
(), file1.ToString());
// record the modification time of the inode
long modTime = nodesInPath.GetINode(nodesInPath.Length() - 1).GetModificationTime
();
// Create a snapshot for the dir, and check the inodes for the path
// pointing to a snapshot file
hdfs.AllowSnapshot(sub1);
hdfs.CreateSnapshot(sub1, "s3");
// Modify file1
DFSTestUtil.AppendFile(hdfs, file1, "the content for appending");
// Check the INodes for snapshot of file1
string snapshotPath = sub1.ToString() + "/.snapshot/s3/file1";
names = INode.GetPathNames(snapshotPath);
components = INode.GetPathComponents(names);
INodesInPath ssNodesInPath = INodesInPath.Resolve(fsdir.rootDir, components, false
);
// Length of ssInodes should be (components.length - 1), since we will
// ignore ".snapshot"
NUnit.Framework.Assert.AreEqual(ssNodesInPath.Length(), components.Length - 1);
Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot s3 = GetSnapshot(ssNodesInPath
, "s3", 3);
AssertSnapshot(ssNodesInPath, true, s3, 3);
// Check the INode for snapshot of file1
INode snapshotFileNode = ssNodesInPath.GetLastINode();
NUnit.Framework.Assert.AreEqual(snapshotFileNode.GetLocalName(), file1.GetName());
NUnit.Framework.Assert.IsTrue(snapshotFileNode.AsFile().IsWithSnapshot());
// The modification time of the snapshot INode should be the same with the
// original INode before modification
NUnit.Framework.Assert.AreEqual(modTime, snapshotFileNode.GetModificationTime(ssNodesInPath
.GetPathSnapshotId()));
// Check the INode for /TestSnapshot/sub1/file1 again
names = INode.GetPathNames(file1.ToString());
components = INode.GetPathComponents(names);
INodesInPath newNodesInPath = INodesInPath.Resolve(fsdir.rootDir, components, false
);
AssertSnapshot(newNodesInPath, false, s3, -1);
// The number of inodes should be equal to components.length
NUnit.Framework.Assert.AreEqual(newNodesInPath.Length(), components.Length);
// The last INode should be associated with file1
int last = components.Length - 1;
NUnit.Framework.Assert.AreEqual(newNodesInPath.GetINode(last).GetFullPathName(),
file1.ToString());
// The modification time of the INode for file3 should have been changed
NUnit.Framework.Assert.IsFalse(modTime == newNodesInPath.GetINode(last).GetModificationTime
());
hdfs.DeleteSnapshot(sub1, "s3");
hdfs.DisallowSnapshot(sub1);
}
/// <summary>for snapshot file.</summary>
/// <exception cref="System.Exception"/>
public virtual void TestSnapshotPathINodes()
{
// Create a snapshot for the dir, and check the inodes for the path
// pointing to a snapshot file
hdfs.AllowSnapshot(sub1);
hdfs.CreateSnapshot(sub1, "s1");
// The path when accessing the snapshot file of file1 is
// /TestSnapshot/sub1/.snapshot/s1/file1
string snapshotPath = sub1.ToString() + "/.snapshot/s1/file1";
string[] names = INode.GetPathNames(snapshotPath);
byte[][] components = INode.GetPathComponents(names);
INodesInPath nodesInPath = INodesInPath.Resolve(fsdir.rootDir, components, false);
// Length of inodes should be (components.length - 1), since we will ignore
// ".snapshot"
NUnit.Framework.Assert.AreEqual(nodesInPath.Length(), components.Length - 1);
// SnapshotRootIndex should be 3: {root, Testsnapshot, sub1, s1, file1}
Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot snapshot = GetSnapshot(nodesInPath
, "s1", 3);
AssertSnapshot(nodesInPath, true, snapshot, 3);
// Check the INode for file1 (snapshot file)
INode snapshotFileNode = nodesInPath.GetLastINode();
AssertINodeFile(snapshotFileNode, file1);
NUnit.Framework.Assert.IsTrue(snapshotFileNode.GetParent().IsWithSnapshot());
// Call getExistingPathINodes and request only one INode.
nodesInPath = INodesInPath.Resolve(fsdir.rootDir, components, false);
NUnit.Framework.Assert.AreEqual(nodesInPath.Length(), components.Length - 1);
AssertSnapshot(nodesInPath, true, snapshot, 3);
// Check the INode for file1 (snapshot file)
AssertINodeFile(nodesInPath.GetLastINode(), file1);
// Resolve the path "/TestSnapshot/sub1/.snapshot"
string dotSnapshotPath = sub1.ToString() + "/.snapshot";
names = INode.GetPathNames(dotSnapshotPath);
components = INode.GetPathComponents(names);
nodesInPath = INodesInPath.Resolve(fsdir.rootDir, components, false);
// The number of INodes returned should still be components.length
// since we put a null in the inode array for ".snapshot"
NUnit.Framework.Assert.AreEqual(nodesInPath.Length(), components.Length);
// No SnapshotRoot dir is included in the resolved inodes
AssertSnapshot(nodesInPath, true, snapshot, -1);
// The last INode should be null, the last but 1 should be sub1
NUnit.Framework.Assert.IsNull(nodesInPath.GetLastINode());
NUnit.Framework.Assert.AreEqual(nodesInPath.GetINode(-2).GetFullPathName(), sub1.
ToString());
NUnit.Framework.Assert.IsTrue(nodesInPath.GetINode(-2).IsDirectory());
string[] invalidPathComponent = new string[] { "invalidDir", "foo", ".snapshot",
"bar" };
Path invalidPath = new Path(invalidPathComponent[0]);
for (int i = 1; i < invalidPathComponent.Length; i++)
{
invalidPath = new Path(invalidPath, invalidPathComponent[i]);
try
{
hdfs.GetFileStatus(invalidPath);
NUnit.Framework.Assert.Fail();
}
catch (FileNotFoundException fnfe)
{
System.Console.Out.WriteLine("The exception is expected: " + fnfe);
}
}
hdfs.DeleteSnapshot(sub1, "s1");
hdfs.DisallowSnapshot(sub1);
}
/// <summary>Rename src to dst.</summary>
/// <remarks>
/// Rename src to dst.
/// See
/// <see cref="Org.Apache.Hadoop.Hdfs.DistributedFileSystem.Rename(Org.Apache.Hadoop.FS.Path, Org.Apache.Hadoop.FS.Path, Org.Apache.Hadoop.FS.Options.Rename[])
/// "/>
/// for details related to rename semantics and exceptions.
/// </remarks>
/// <param name="fsd">FSDirectory</param>
/// <param name="src">source path</param>
/// <param name="dst">destination path</param>
/// <param name="timestamp">modification time</param>
/// <param name="collectedBlocks">blocks to be removed</param>
/// <param name="options">Rename options</param>
/// <returns>whether a file/directory gets overwritten in the dst path</returns>
/// <exception cref="System.IO.IOException"/>
internal static bool UnprotectedRenameTo(FSDirectory fsd, string src, string dst,
INodesInPath srcIIP, INodesInPath dstIIP, long timestamp, INode.BlocksMapUpdateInfo
collectedBlocks, params Options.Rename[] options)
{
System.Diagnostics.Debug.Assert(fsd.HasWriteLock());
bool overwrite = options != null && Arrays.AsList(options).Contains(Options.Rename
.Overwrite);
string error;
INode srcInode = srcIIP.GetLastINode();
ValidateRenameSource(srcIIP);
// validate the destination
if (dst.Equals(src))
{
throw new FileAlreadyExistsException("The source " + src + " and destination " +
dst + " are the same");
}
ValidateDestination(src, dst, srcInode);
if (dstIIP.Length() == 1)
{
error = "rename destination cannot be the root";
NameNode.stateChangeLog.Warn("DIR* FSDirectory.unprotectedRenameTo: " + error);
throw new IOException(error);
}
BlockStoragePolicySuite bsps = fsd.GetBlockStoragePolicySuite();
fsd.ezManager.CheckMoveValidity(srcIIP, dstIIP, src);
INode dstInode = dstIIP.GetLastINode();
IList <INodeDirectory> snapshottableDirs = new AList <INodeDirectory>();
if (dstInode != null)
{
// Destination exists
ValidateOverwrite(src, dst, overwrite, srcInode, dstInode);
FSDirSnapshotOp.CheckSnapshot(dstInode, snapshottableDirs);
}
INode dstParent = dstIIP.GetINode(-2);
if (dstParent == null)
{
error = "rename destination parent " + dst + " not found.";
NameNode.stateChangeLog.Warn("DIR* FSDirectory.unprotectedRenameTo: " + error);
throw new FileNotFoundException(error);
}
if (!dstParent.IsDirectory())
{
error = "rename destination parent " + dst + " is a file.";
NameNode.stateChangeLog.Warn("DIR* FSDirectory.unprotectedRenameTo: " + error);
throw new ParentNotDirectoryException(error);
}
// Ensure dst has quota to accommodate rename
VerifyFsLimitsForRename(fsd, srcIIP, dstIIP);
VerifyQuotaForRename(fsd, srcIIP, dstIIP);
FSDirRenameOp.RenameOperation tx = new FSDirRenameOp.RenameOperation(fsd, src, dst
, srcIIP, dstIIP);
bool undoRemoveSrc = true;
tx.RemoveSrc();
bool undoRemoveDst = false;
long removedNum = 0;
try
{
if (dstInode != null)
{
// dst exists, remove it
removedNum = tx.RemoveDst();
if (removedNum != -1)
{
undoRemoveDst = true;
}
}
// add src as dst to complete rename
if (tx.AddSourceToDestination())
{
undoRemoveSrc = false;
if (NameNode.stateChangeLog.IsDebugEnabled())
{
NameNode.stateChangeLog.Debug("DIR* FSDirectory.unprotectedRenameTo: " + src + " is renamed to "
+ dst);
}
tx.UpdateMtimeAndLease(timestamp);
// Collect the blocks and remove the lease for previous dst
bool filesDeleted = false;
if (undoRemoveDst)
{
undoRemoveDst = false;
if (removedNum > 0)
{
filesDeleted = tx.CleanDst(bsps, collectedBlocks);
}
}
if (snapshottableDirs.Count > 0)
{
// There are snapshottable directories (without snapshots) to be
// deleted. Need to update the SnapshotManager.
fsd.GetFSNamesystem().RemoveSnapshottableDirs(snapshottableDirs);
}
tx.UpdateQuotasInSourceTree(bsps);
return(filesDeleted);
}
}
finally
{
if (undoRemoveSrc)
{
tx.RestoreSource();
}
if (undoRemoveDst)
{
// Rename failed - restore dst
tx.RestoreDst(bsps);
}
}
NameNode.stateChangeLog.Warn("DIR* FSDirectory.unprotectedRenameTo: " + "failed to rename "
+ src + " to " + dst);
throw new IOException("rename from " + src + " to " + dst + " failed.");
}
internal static bool UnprotectedRenameTo(FSDirectory fsd, string src, string dst,
INodesInPath srcIIP, INodesInPath dstIIP, long timestamp)
{
System.Diagnostics.Debug.Assert(fsd.HasWriteLock());
INode srcInode = srcIIP.GetLastINode();
try
{
ValidateRenameSource(srcIIP);
}
catch (SnapshotException e)
{
throw;
}
catch (IOException)
{
return(false);
}
// validate the destination
if (dst.Equals(src))
{
return(true);
}
try
{
ValidateDestination(src, dst, srcInode);
}
catch (IOException)
{
return(false);
}
if (dstIIP.GetLastINode() != null)
{
NameNode.stateChangeLog.Warn("DIR* FSDirectory.unprotectedRenameTo: " + "failed to rename "
+ src + " to " + dst + " because destination " + "exists");
return(false);
}
INode dstParent = dstIIP.GetINode(-2);
if (dstParent == null)
{
NameNode.stateChangeLog.Warn("DIR* FSDirectory.unprotectedRenameTo: " + "failed to rename "
+ src + " to " + dst + " because destination's " + "parent does not exist");
return(false);
}
fsd.ezManager.CheckMoveValidity(srcIIP, dstIIP, src);
// Ensure dst has quota to accommodate rename
VerifyFsLimitsForRename(fsd, srcIIP, dstIIP);
VerifyQuotaForRename(fsd, srcIIP, dstIIP);
FSDirRenameOp.RenameOperation tx = new FSDirRenameOp.RenameOperation(fsd, src, dst
, srcIIP, dstIIP);
bool added = false;
try
{
// remove src
if (!tx.RemoveSrc4OldRename())
{
return(false);
}
added = tx.AddSourceToDestination();
if (added)
{
if (NameNode.stateChangeLog.IsDebugEnabled())
{
NameNode.stateChangeLog.Debug("DIR* FSDirectory" + ".unprotectedRenameTo: " + src
+ " is renamed to " + dst);
}
tx.UpdateMtimeAndLease(timestamp);
tx.UpdateQuotasInSourceTree(fsd.GetBlockStoragePolicySuite());
return(true);
}
}
finally
{
if (!added)
{
tx.RestoreSource();
}
}
NameNode.stateChangeLog.Warn("DIR* FSDirectory.unprotectedRenameTo: " + "failed to rename "
+ src + " to " + dst);
return(false);
}
