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>Used to record the modification of a symlink node</summary>
public virtual INode SaveChild2Snapshot(INodeDirectory currentINode, INode child,
int latestSnapshotId, INode snapshotCopy)
{
Preconditions.CheckArgument(!child.IsDirectory(), "child is a directory, child=%s"
, child);
Preconditions.CheckArgument(latestSnapshotId != Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot
.CurrentStateId);
DirectoryWithSnapshotFeature.DirectoryDiff diff = diffs.CheckAndAddLatestSnapshotDiff
(latestSnapshotId, currentINode);
if (diff.GetChild(child.GetLocalNameBytes(), false, currentINode) != null)
{
// it was already saved in the latest snapshot earlier.
return(child);
}
diff.diff.Modify(snapshotCopy, child);
return(child);
}