/// <summary>
/// Test
/// <see cref="Snapshot.IdComparator"/>
/// .
/// </summary>
public virtual void TestIdCmp()
{
PermissionStatus perm = PermissionStatus.CreateImmutable("user", "group", FsPermission
.CreateImmutable((short)0));
INodeDirectory snapshottable = new INodeDirectory(0, DFSUtil.String2Bytes("foo"),
perm, 0L);
snapshottable.AddSnapshottableFeature();
Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot[] snapshots = new Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot
[] { new Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot(1, "s1", snapshottable
), new Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot(1, "s1", snapshottable
), new Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot(2, "s2", snapshottable
), new Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot(2, "s2", snapshottable
) };
NUnit.Framework.Assert.AreEqual(0, Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot
.IdComparator.Compare(null, null));
foreach (Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot s in snapshots)
{
NUnit.Framework.Assert.IsTrue(Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot
.IdComparator.Compare(null, s) > 0);
NUnit.Framework.Assert.IsTrue(Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot
.IdComparator.Compare(s, null) < 0);
foreach (Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot t in snapshots)
{
int expected = string.CompareOrdinal(s.GetRoot().GetLocalName(), t.GetRoot().GetLocalName
());
int computed = Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot.IdComparator
.Compare(s, t);
NUnit.Framework.Assert.AreEqual(expected > 0, computed > 0);
NUnit.Framework.Assert.AreEqual(expected == 0, computed == 0);
NUnit.Framework.Assert.AreEqual(expected < 0, computed < 0);
}
}
}
/// <exception cref="System.IO.IOException"/>
private static INodeDirectory CreateINodeDirectory(INodeDirectory parent, string
name, string owner, string group, short perm)
{
PermissionStatus permStatus = PermissionStatus.CreateImmutable(owner, group, FsPermission
.CreateImmutable(perm));
INodeDirectory inodeDirectory = new INodeDirectory(INodeId.GrandfatherInodeId, Sharpen.Runtime.GetBytesForString
(name, "UTF-8"), permStatus, 0L);
parent.AddChild(inodeDirectory);
return(inodeDirectory);
}
/// <exception cref="System.IO.IOException"/>
private static INodeFile CreateINodeFile(INodeDirectory parent, string name, string
owner, string group, short perm)
{
PermissionStatus permStatus = PermissionStatus.CreateImmutable(owner, group, FsPermission
.CreateImmutable(perm));
INodeFile inodeFile = new INodeFile(INodeId.GrandfatherInodeId, Sharpen.Runtime.GetBytesForString
(name, "UTF-8"), permStatus, 0L, 0L, null, Replication, PreferredBlockSize, unchecked (
(byte)0));
parent.AddChild(inodeFile);
return(inodeFile);
}
/// <summary>
/// Create an aborted in-progress log in the given directory, containing
/// only a specified number of "mkdirs" operations.
/// </summary>
/// <exception cref="System.IO.IOException"/>
public static void CreateAbortedLogWithMkdirs(FilePath editsLogDir, int numDirs,
long firstTxId, long newInodeId)
{
FSEditLog editLog = FSImageTestUtil.CreateStandaloneEditLog(editsLogDir);
editLog.SetNextTxId(firstTxId);
editLog.OpenForWrite();
PermissionStatus perms = PermissionStatus.CreateImmutable("fakeuser", "fakegroup"
, FsPermission.CreateImmutable((short)0x1ed));
for (int i = 1; i <= numDirs; i++)
{
string dirName = "dir" + i;
INodeDirectory dir = new INodeDirectory(newInodeId + i - 1, DFSUtil.String2Bytes(
dirName), perms, 0L);
editLog.LogMkDir("/" + dirName, dir);
}
editLog.LogSync();
editLog.AbortCurrentLogSegment();
}