/// <exception cref="System.IO.IOException"/>
internal void SerializeINodeDirectorySection(OutputStream @out)
{
IEnumerator <INodeWithAdditionalFields> iter = fsn.GetFSDirectory().GetINodeMap().
GetMapIterator();
AList <INodeReference> refList = parent.GetSaverContext().GetRefList();
int i = 0;
while (iter.HasNext())
{
INodeWithAdditionalFields n = iter.Next();
if (!n.IsDirectory())
{
continue;
}
ReadOnlyList <INode> children = n.AsDirectory().GetChildrenList(Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot
.CurrentStateId);
if (children.Size() > 0)
{
FsImageProto.INodeDirectorySection.DirEntry.Builder b = FsImageProto.INodeDirectorySection.DirEntry
.NewBuilder().SetParent(n.GetId());
foreach (INode inode in children)
{
if (!inode.IsReference())
{
b.AddChildren(inode.GetId());
}
else
{
refList.AddItem(inode.AsReference());
b.AddRefChildren(refList.Count - 1);
}
}
FsImageProto.INodeDirectorySection.DirEntry e = ((FsImageProto.INodeDirectorySection.DirEntry
)b.Build());
e.WriteDelimitedTo(@out);
}
++i;
if (i % FSImageFormatProtobuf.Saver.CheckCancelInterval == 0)
{
context.CheckCancelled();
}
}
parent.CommitSection(summary, FSImageFormatProtobuf.SectionName.InodeDir);
}
/// <exception cref="System.IO.IOException"/>
private void SaveInternal(FileOutputStream fout, FSImageCompression compression,
string filePath)
{
StartupProgress prog = NameNode.GetStartupProgress();
MessageDigest digester = MD5Hash.GetDigester();
underlyingOutputStream = new DigestOutputStream(new BufferedOutputStream(fout), digester
);
underlyingOutputStream.Write(FSImageUtil.MagicHeader);
fileChannel = fout.GetChannel();
FsImageProto.FileSummary.Builder b = FsImageProto.FileSummary.NewBuilder().SetOndiskVersion
(FSImageUtil.FileVersion).SetLayoutVersion(NameNodeLayoutVersion.CurrentLayoutVersion
);
codec = compression.GetImageCodec();
if (codec != null)
{
b.SetCodec(codec.GetType().GetCanonicalName());
sectionOutputStream = codec.CreateOutputStream(underlyingOutputStream);
}
else
{
sectionOutputStream = underlyingOutputStream;
}
SaveNameSystemSection(b);
// Check for cancellation right after serializing the name system section.
// Some unit tests, such as TestSaveNamespace#testCancelSaveNameSpace
// depends on this behavior.
context.CheckCancelled();
Step step = new Step(StepType.Inodes, filePath);
prog.BeginStep(Phase.SavingCheckpoint, step);
SaveInodes(b);
SaveSnapshots(b);
prog.EndStep(Phase.SavingCheckpoint, step);
step = new Step(StepType.DelegationTokens, filePath);
prog.BeginStep(Phase.SavingCheckpoint, step);
SaveSecretManagerSection(b);
prog.EndStep(Phase.SavingCheckpoint, step);
step = new Step(StepType.CachePools, filePath);
prog.BeginStep(Phase.SavingCheckpoint, step);
SaveCacheManagerSection(b);
prog.EndStep(Phase.SavingCheckpoint, step);
SaveStringTableSection(b);
// We use the underlyingOutputStream to write the header. Therefore flush
// the buffered stream (which is potentially compressed) first.
FlushSectionOutputStream();
FsImageProto.FileSummary summary = ((FsImageProto.FileSummary)b.Build());
SaveFileSummary(underlyingOutputStream, summary);
underlyingOutputStream.Close();
savedDigest = new MD5Hash(digester.Digest());
}
