/// <summary>Concat all the blocks from srcs to trg and delete the srcs files</summary>
/// <param name="fsd">FSDirectory</param>
/// <exception cref="System.IO.IOException"/>
internal static void UnprotectedConcat(FSDirectory fsd, INodesInPath targetIIP, INodeFile
[] srcList, long timestamp)
{
System.Diagnostics.Debug.Assert(fsd.HasWriteLock());
if (NameNode.stateChangeLog.IsDebugEnabled())
{
NameNode.stateChangeLog.Debug("DIR* FSNamesystem.concat to " + targetIIP.GetPath(
));
}
INodeFile trgInode = targetIIP.GetLastINode().AsFile();
QuotaCounts deltas = ComputeQuotaDeltas(fsd, trgInode, srcList);
VerifyQuota(fsd, targetIIP, deltas);
// the target file can be included in a snapshot
trgInode.RecordModification(targetIIP.GetLatestSnapshotId());
INodeDirectory trgParent = targetIIP.GetINode(-2).AsDirectory();
trgInode.ConcatBlocks(srcList);
// since we are in the same dir - we can use same parent to remove files
int count = 0;
foreach (INodeFile nodeToRemove in srcList)
{
if (nodeToRemove != null)
{
nodeToRemove.SetBlocks(null);
nodeToRemove.GetParent().RemoveChild(nodeToRemove);
fsd.GetINodeMap().Remove(nodeToRemove);
count++;
}
}
trgInode.SetModificationTime(timestamp, targetIIP.GetLatestSnapshotId());
trgParent.UpdateModificationTime(timestamp, targetIIP.GetLatestSnapshotId());
// update quota on the parent directory with deltas
FSDirectory.UnprotectedUpdateCount(targetIIP, targetIIP.Length() - 1, deltas);
}