public override void DestroyAndCollectBlocks(BlockStoragePolicySuite bsps, INode.BlocksMapUpdateInfo
collectedBlocks, IList <INode> removedINodes)
{
if (blocks != null && collectedBlocks != null)
{
foreach (BlockInfoContiguous blk in blocks)
{
collectedBlocks.AddDeleteBlock(blk);
blk.SetBlockCollection(null);
}
}
SetBlocks(null);
if (GetAclFeature() != null)
{
AclStorage.RemoveAclFeature(GetAclFeature());
}
Clear();
removedINodes.AddItem(this);
FileWithSnapshotFeature sf = GetFileWithSnapshotFeature();
if (sf != null)
{
sf.GetDiffs().DestroyAndCollectSnapshotBlocks(collectedBlocks);
sf.ClearDiffs();
}
}
public long StoragespaceConsumedNoReplication()
{
FileWithSnapshotFeature sf = GetFileWithSnapshotFeature();
if (sf == null)
{
return(ComputeFileSize(true, true));
}
// Collect all distinct blocks
long size = 0;
ICollection <Block> allBlocks = new HashSet <Block>(Arrays.AsList(GetBlocks()));
IList <FileDiff> diffs = sf.GetDiffs().AsList();
foreach (FileDiff diff in diffs)
{
BlockInfoContiguous[] diffBlocks = diff.GetBlocks();
if (diffBlocks != null)
{
Sharpen.Collections.AddAll(allBlocks, Arrays.AsList(diffBlocks));
}
}
foreach (Block block in allBlocks)
{
size += block.GetNumBytes();
}
// check if the last block is under construction
BlockInfoContiguous lastBlock = GetLastBlock();
if (lastBlock != null && lastBlock is BlockInfoContiguousUnderConstruction)
{
size += GetPreferredBlockSize() - lastBlock.GetNumBytes();
}
return(size);
}
// This is the only place that needs to use the BlockStoragePolicySuite to
// derive the intended storage type usage for quota by storage type
public sealed override QuotaCounts ComputeQuotaUsage(BlockStoragePolicySuite bsps
, byte blockStoragePolicyId, QuotaCounts counts, bool useCache, int lastSnapshotId
)
{
long nsDelta = 1;
long ssDeltaNoReplication;
short replication;
FileWithSnapshotFeature sf = GetFileWithSnapshotFeature();
if (sf != null)
{
FileDiffList fileDiffList = sf.GetDiffs();
int last = fileDiffList.GetLastSnapshotId();
if (lastSnapshotId == Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot.CurrentStateId ||
last == Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot.CurrentStateId)
{
ssDeltaNoReplication = StoragespaceConsumedNoReplication();
replication = GetBlockReplication();
}
else
{
if (last < lastSnapshotId)
{
ssDeltaNoReplication = ComputeFileSize(true, false);
replication = GetFileReplication();
}
else
{
int sid = fileDiffList.GetSnapshotById(lastSnapshotId);
ssDeltaNoReplication = StoragespaceConsumedNoReplication(sid);
replication = GetReplication(sid);
}
}
}
else
{
ssDeltaNoReplication = StoragespaceConsumedNoReplication();
replication = GetBlockReplication();
}
counts.AddNameSpace(nsDelta);
counts.AddStorageSpace(ssDeltaNoReplication * replication);
if (blockStoragePolicyId != BlockStoragePolicySuite.IdUnspecified)
{
BlockStoragePolicy bsp = bsps.GetPolicy(blockStoragePolicyId);
IList <StorageType> storageTypes = bsp.ChooseStorageTypes(replication);
foreach (StorageType t in storageTypes)
{
if (!t.SupportTypeQuota())
{
continue;
}
counts.AddTypeSpace(t, ssDeltaNoReplication);
}
}
return(counts);
}
public virtual FileDiffList GetDiffs()
{
FileWithSnapshotFeature sf = this.GetFileWithSnapshotFeature();
if (sf != null)
{
return(sf.GetDiffs());
}
return(null);
}
/// <returns>true if the block is contained in a snapshot or false otherwise.</returns>
internal virtual bool IsBlockInLatestSnapshot(BlockInfoContiguous block)
{
FileWithSnapshotFeature sf = this.GetFileWithSnapshotFeature();
if (sf == null || sf.GetDiffs() == null)
{
return(false);
}
BlockInfoContiguous[] snapshotBlocks = GetDiffs().FindEarlierSnapshotBlocks(GetDiffs
().GetLastSnapshotId());
return(snapshotBlocks != null && Arrays.AsList(snapshotBlocks).Contains(block));
}
public override INodeAttributes GetSnapshotINode(int snapshotId)
{
FileWithSnapshotFeature sf = this.GetFileWithSnapshotFeature();
if (sf != null)
{
return(sf.GetDiffs().GetSnapshotINode(snapshotId, this));
}
else
{
return(this);
}
}
/// <summary>
/// Compute file size of the current file if the given snapshot is null;
/// otherwise, get the file size from the given snapshot.
/// </summary>
public long ComputeFileSize(int snapshotId)
{
FileWithSnapshotFeature sf = this.GetFileWithSnapshotFeature();
if (snapshotId != Org.Apache.Hadoop.Hdfs.Server.Namenode.Snapshot.Snapshot.CurrentStateId &&
sf != null)
{
FileDiff d = sf.GetDiffs().GetDiffById(snapshotId);
if (d != null)
{
return(d.GetFileSize());
}
}
return(ComputeFileSize(true, false));
}
public virtual void RecordModification(int latestSnapshotId, bool withBlocks)
{
if (IsInLatestSnapshot(latestSnapshotId) && !ShouldRecordInSrcSnapshot(latestSnapshotId
))
{
// the file is in snapshot, create a snapshot feature if it does not have
FileWithSnapshotFeature sf = this.GetFileWithSnapshotFeature();
if (sf == null)
{
sf = AddSnapshotFeature(null);
}
// record self in the diff list if necessary
sf.GetDiffs().SaveSelf2Snapshot(latestSnapshotId, this, null, withBlocks);
}
}
public sealed override ContentSummaryComputationContext ComputeContentSummary(ContentSummaryComputationContext
summary)
{
ContentCounts counts = summary.GetCounts();
FileWithSnapshotFeature sf = GetFileWithSnapshotFeature();
long fileLen = 0;
if (sf == null)
{
fileLen = ComputeFileSize();
counts.AddContent(Content.File, 1);
}
else
{
FileDiffList diffs = sf.GetDiffs();
int n = diffs.AsList().Count;
counts.AddContent(Content.File, n);
if (n > 0 && sf.IsCurrentFileDeleted())
{
fileLen = diffs.GetLast().GetFileSize();
}
else
{
fileLen = ComputeFileSize();
}
}
counts.AddContent(Content.Length, fileLen);
counts.AddContent(Content.Diskspace, StoragespaceConsumed());
if (GetStoragePolicyID() != BlockStoragePolicySuite.IdUnspecified)
{
BlockStoragePolicy bsp = summary.GetBlockStoragePolicySuite().GetPolicy(GetStoragePolicyID
());
IList <StorageType> storageTypes = bsp.ChooseStorageTypes(GetFileReplication());
foreach (StorageType t in storageTypes)
{
if (!t.SupportTypeQuota())
{
continue;
}
counts.AddTypeSpace(t, fileLen);
}
}
return(summary);
}
/// <summary>compute the quota usage change for a truncate op</summary>
/// <param name="newLength">the length for truncation</param>
/// <returns>the quota usage delta (not considering replication factor)</returns>
internal virtual long ComputeQuotaDeltaForTruncate(long newLength)
{
BlockInfoContiguous[] blocks = GetBlocks();
if (blocks == null || blocks.Length == 0)
{
return(0);
}
int n = 0;
long size = 0;
for (; n < blocks.Length && newLength > size; n++)
{
size += blocks[n].GetNumBytes();
}
bool onBoundary = size == newLength;
long truncateSize = 0;
for (int i = (onBoundary ? n : n - 1); i < blocks.Length; i++)
{
truncateSize += blocks[i].GetNumBytes();
}
FileWithSnapshotFeature sf = GetFileWithSnapshotFeature();
if (sf != null)
{
FileDiff diff = sf.GetDiffs().GetLast();
BlockInfoContiguous[] sblocks = diff != null?diff.GetBlocks() : null;
if (sblocks != null)
{
for (int i_1 = (onBoundary ? n : n - 1); i_1 < blocks.Length && i_1 < sblocks.Length &&
blocks[i_1].Equals(sblocks[i_1]); i_1++)
{
truncateSize -= blocks[i_1].GetNumBytes();
}
}
}
return(onBoundary ? -truncateSize : (GetPreferredBlockSize() - truncateSize));
}