org.apache.hadoop.hdfs.server.namenode
Class INodeDirectoryWithQuota

java.lang.Object
  org.apache.hadoop.hdfs.server.namenode.INode
      org.apache.hadoop.hdfs.server.namenode.INodeWithAdditionalFields
          org.apache.hadoop.hdfs.server.namenode.INodeDirectory
              org.apache.hadoop.hdfs.server.namenode.INodeDirectoryWithQuota

All Implemented Interfaces:

Comparable<byte[]>, org.apache.hadoop.hdfs.server.namenode.INodeAttributes, org.apache.hadoop.hdfs.server.namenode.INodeDirectoryAttributes, Diff.Element<byte[]>, org.apache.hadoop.util.LightWeightGSet.LinkedElement

Direct Known Subclasses:

INodeDirectoryWithSnapshot

public class INodeDirectoryWithQuota
extends INodeDirectory

Directory INode class that has a quota restriction

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.hdfs.server.namenode.INodeDirectory

INodeDirectory.SnapshotAndINode

Nested classes/interfaces inherited from class org.apache.hadoop.hdfs.server.namenode.INode

INode.BlocksMapUpdateInfo

Nested classes/interfaces inherited from interface org.apache.hadoop.hdfs.server.namenode.INodeDirectoryAttributes

INodeDirectoryAttributes.CopyWithQuota, INodeDirectoryAttributes.SnapshotCopy

Field Summary

Fields inherited from class org.apache.hadoop.hdfs.server.namenode.INodeDirectory

DEFAULT_FILES_PER_DIRECTORY

Fields inherited from class org.apache.hadoop.hdfs.server.namenode.INode

LOG

Constructor Summary

INodeDirectoryWithQuota(INodeDirectory other, boolean adopt, long nsQuota, long dsQuota)
Convert an existing directory inode to one with the given quota

Method Summary

void	addSpaceConsumed(long nsDelta, long dsDelta, boolean verify) Check and add namespace/diskspace consumed to itself and the ancestors.
protected void	addSpaceConsumed2Cache(long nsDelta, long dsDelta) Update the size of the tree
Content.Counts	computeContentSummary(Content.Counts counts) Count subtree content summary with a Content.Counts.
Quota.Counts	computeQuotaUsage(Quota.Counts counts, boolean useCache, int lastSnapshotId) Count subtree Quota.NAMESPACE and Quota.DISKSPACE usages.
long	getDiskspace()
long	getDsQuota() Get this directory's diskspace quota
long	getNamespace()
long	getNsQuota() Get this directory's namespace quota
void	setQuota(long nsQuota, long dsQuota) Set this directory's quota

Methods inherited from class org.apache.hadoop.hdfs.server.namenode.INodeDirectory

addChild, addChild, asDirectory, cleanSubtree, cleanSubtreeRecursively, clear, clearChildren, computeQuotaUsage4CurrentDirectory, destroyAndCollectBlocks, dumpTreeRecursively, dumpTreeRecursively, getChild, getChildrenList, getChildrenNum, isDirectory, isSnapshottable, metadataEquals, recordModification, removeChild, removeChild, replaceChild, replaceSelf4INodeDirectory, replaceSelf4INodeDirectorySnapshottable, replaceSelf4INodeDirectoryWithSnapshot, saveChild2Snapshot, valueOf

Methods inherited from class org.apache.hadoop.hdfs.server.namenode.INodeWithAdditionalFields

getFsPermissionShort, getId, getLocalNameBytes, getNext, getPermissionLong, setAccessTime, setLocalName, setModificationTime, setNext, updateModificationTime

Methods inherited from class org.apache.hadoop.hdfs.server.namenode.INode

asFile, asReference, asSymlink, compareTo, computeContentSummary, computeQuotaUsage, computeQuotaUsage, dumpTreeRecursively, dumpTreeRecursively, equals, getAccessTime, getFsPermission, getFullPathName, getGroupName, getKey, getLocalName, getModificationTime, getObjectString, getParent, getParentReference, getParentString, getSnapshotINode, getUserName, hashCode, isAncestorDirectory, isFile, isInLatestSnapshot, isQuotaSet, isReference, isSymlink, setAccessTime, setModificationTime, setParent, setParentReference, shouldRecordInSrcSnapshot, toDetailString, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.hadoop.hdfs.server.namenode.INodeAttributes

getAccessTime, getFsPermission, getFsPermissionShort, getGroupName, getLocalNameBytes, getModificationTime, getPermissionLong, getUserName

Constructor Detail

INodeDirectoryWithQuota

public INodeDirectoryWithQuota(INodeDirectory other,
                               boolean adopt,
                               long nsQuota,
                               long dsQuota)

Convert an existing directory inode to one with the given quota

Parameters:

nsQuota - Namespace quota to be assigned to this inode

dsQuota - Diskspace quota to be assigned to this indoe

other - The other inode from which all other properties are copied

Method Detail

getNsQuota

public long getNsQuota()

Get this directory's namespace quota

Specified by:

getNsQuota in interface org.apache.hadoop.hdfs.server.namenode.INodeDirectoryAttributes

Overrides:

getNsQuota in class org.apache.hadoop.hdfs.server.namenode.INode

Returns:

this directory's namespace quota

getDsQuota

public long getDsQuota()

Get this directory's diskspace quota

Specified by:

getDsQuota in interface org.apache.hadoop.hdfs.server.namenode.INodeDirectoryAttributes

Overrides:

getDsQuota in class org.apache.hadoop.hdfs.server.namenode.INode

Returns:

this directory's diskspace quota

setQuota

public void setQuota(long nsQuota,
                     long dsQuota)

Set this directory's quota

Parameters:

nsQuota - Namespace quota to be set

dsQuota - diskspace quota to be set

computeQuotaUsage

public Quota.Counts computeQuotaUsage(Quota.Counts counts,
                                      boolean useCache,
                                      int lastSnapshotId)

Description copied from class: org.apache.hadoop.hdfs.server.namenode.INode

Count subtree Quota.NAMESPACE and Quota.DISKSPACE usages. With the existence of INodeReference, the same inode and its subtree may be referred by multiple INodeReference.WithName nodes and a INodeReference.DstReference node. To avoid circles while quota usage computation, we have the following rules:

 1. For a INodeReference.DstReference node, since the node must be in the current
 tree (or has been deleted as the end point of a series of rename 
 operations), we compute the quota usage of the referred node (and its 
 subtree) in the regular manner, i.e., including every inode in the current
 tree and in snapshot copies, as well as the size of diff list.
 
 2. For a INodeReference.WithName node, since the node must be in a snapshot, we 
 only count the quota usage for those nodes that still existed at the 
 creation time of the snapshot associated with the INodeReference.WithName node.
 We do not count in the size of the diff list.  
 


Overrides:
computeQuotaUsage in class INodeDirectory


Parameters:
counts - The subtree counts for returning.
useCache - Whether to use cached quota usage. Note that 
                 INodeReference.WithName node never uses cache for its subtree.
lastSnapshotId - Snapshot.INVALID_ID indicates the computation
                       is in the current tree. Otherwise the id indicates
                       the computation range for a INodeReference.WithName node.
Returns:
The same objects as the counts parameter.

computeContentSummary

public Content.Counts computeContentSummary(Content.Counts counts)

Description copied from class: org.apache.hadoop.hdfs.server.namenode.INode

Count subtree content summary with a Content.Counts.

Overrides:

computeContentSummary in class INodeDirectory

Parameters:

counts - The subtree counts for returning.

Returns:

The same objects as the counts parameter.

addSpaceConsumed

public final void addSpaceConsumed(long nsDelta,
                                   long dsDelta,
                                   boolean verify)
                            throws org.apache.hadoop.hdfs.protocol.QuotaExceededException

Description copied from class: org.apache.hadoop.hdfs.server.namenode.INode

Check and add namespace/diskspace consumed to itself and the ancestors.

Overrides:

addSpaceConsumed in class org.apache.hadoop.hdfs.server.namenode.INode

Throws:

org.apache.hadoop.hdfs.protocol.QuotaExceededException - if quote is violated.

addSpaceConsumed2Cache

protected void addSpaceConsumed2Cache(long nsDelta,
                                      long dsDelta)

Update the size of the tree

Parameters:

nsDelta - the change of the tree size

dsDelta - change to disk space occupied

getNamespace

public long getNamespace()

getDiskspace

public long getDiskspace()