public virtual INode GetChild(INodeDirectory currentINode, byte[] name, int snapshotId
)
{
DirectoryWithSnapshotFeature.DirectoryDiff diff = diffs.GetDiffById(snapshotId);
return(diff != null?diff.GetChild(name, true, currentINode) : currentINode.GetChild
(name, Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot.CurrentStateId));
}
/// <summary>Load a node stored in the created list from fsimage.</summary>
/// <param name="createdNodeName">The name of the created node.</param>
/// <param name="parent">The directory that the created list belongs to.</param>
/// <returns>The created node.</returns>
/// <exception cref="System.IO.IOException"/>
public static INode LoadCreated(byte[] createdNodeName, INodeDirectory parent)
{
// the INode in the created list should be a reference to another INode
// in posterior SnapshotDiffs or one of the current children
foreach (DirectoryWithSnapshotFeature.DirectoryDiff postDiff in parent.GetDiffs())
{
INode d = postDiff.GetChildrenDiff().Search(Diff.ListType.Deleted, createdNodeName
);
if (d != null)
{
return(d);
}
}
// else go to the next SnapshotDiff
// use the current child
INode currentChild = parent.GetChild(createdNodeName, Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot
.CurrentStateId);
if (currentChild == null)
{
throw new IOException("Cannot find an INode associated with the INode " + DFSUtil
.Bytes2String(createdNodeName) + " in created list while loading FSImage.");
}
return(currentChild);
}