/// <summary>Ensure mtime and atime can be loaded from fsimage.</summary>
/// <exception cref="System.Exception"/>
public virtual void TestLoadMtimeAtime()
{
Configuration conf = new Configuration();
MiniDFSCluster cluster = null;
try
{
cluster = new MiniDFSCluster.Builder(conf).NumDataNodes(1).Build();
cluster.WaitActive();
DistributedFileSystem hdfs = cluster.GetFileSystem();
string userDir = hdfs.GetHomeDirectory().ToUri().GetPath().ToString();
Path file = new Path(userDir, "file");
Path dir = new Path(userDir, "/dir");
Path link = new Path(userDir, "/link");
hdfs.CreateNewFile(file);
hdfs.Mkdirs(dir);
hdfs.CreateSymlink(file, link, false);
long mtimeFile = hdfs.GetFileStatus(file).GetModificationTime();
long atimeFile = hdfs.GetFileStatus(file).GetAccessTime();
long mtimeDir = hdfs.GetFileStatus(dir).GetModificationTime();
long mtimeLink = hdfs.GetFileLinkStatus(link).GetModificationTime();
long atimeLink = hdfs.GetFileLinkStatus(link).GetAccessTime();
// save namespace and restart cluster
hdfs.SetSafeMode(HdfsConstants.SafeModeAction.SafemodeEnter);
hdfs.SaveNamespace();
hdfs.SetSafeMode(HdfsConstants.SafeModeAction.SafemodeLeave);
cluster.Shutdown();
cluster = new MiniDFSCluster.Builder(conf).Format(false).NumDataNodes(1).Build();
cluster.WaitActive();
hdfs = cluster.GetFileSystem();
NUnit.Framework.Assert.AreEqual(mtimeFile, hdfs.GetFileStatus(file).GetModificationTime
());
NUnit.Framework.Assert.AreEqual(atimeFile, hdfs.GetFileStatus(file).GetAccessTime
());
NUnit.Framework.Assert.AreEqual(mtimeDir, hdfs.GetFileStatus(dir).GetModificationTime
());
NUnit.Framework.Assert.AreEqual(mtimeLink, hdfs.GetFileLinkStatus(link).GetModificationTime
());
NUnit.Framework.Assert.AreEqual(atimeLink, hdfs.GetFileLinkStatus(link).GetAccessTime
());
}
finally
{
if (cluster != null)
{
cluster.Shutdown();
}
}
}