org.apache.hadoop.hdfs.server.namenode
Class INodeReference.WithCount

java.lang.Object
  org.apache.hadoop.hdfs.server.namenode.INode
      org.apache.hadoop.hdfs.server.namenode.INodeReference
          org.apache.hadoop.hdfs.server.namenode.INodeReference.WithCount

All Implemented Interfaces:

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

Enclosing class:

INodeReference

public static class INodeReference.WithCount
extends INodeReference

An anonymous reference with reference count.

Nested Class Summary

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

INodeReference.DstReference, INodeReference.WithCount, INodeReference.WithName

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.INodeAttributes

INodeAttributes.SnapshotCopy

Field Summary

static Comparator<INodeReference.WithName>

WITHNAME_COMPARATOR Compare snapshot with IDs, where null indicates the current status thus is greater than any non-null snapshot.

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

LOG

Constructor Summary

INodeReference.WithCount(INodeReference parent, org.apache.hadoop.hdfs.server.namenode.INode referred)

Method Summary

void	addReference(INodeReference ref) Increment and then return the reference count.
int	getReferenceCount()
void	removeReference(INodeReference ref) Decrement and then return the reference count.

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

asDirectory, asFile, asReference, asSymlink, cleanSubtree, clear, computeContentSummary, computeQuotaUsage, destroyAndCollectBlocks, dumpTreeRecursively, getAccessTime, getDsQuota, getDstSnapshotId, getFsPermission, getFsPermissionShort, getGroupName, getId, getLocalNameBytes, getModificationTime, getNsQuota, getPermissionLong, getPermissionStatus, getReferredINode, getSnapshotINode, getUserName, isDirectory, isFile, isReference, isSymlink, setAccessTime, setLocalName, setModificationTime, setReferredINode, tryRemoveReference, updateModificationTime

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

addSpaceConsumed, compareTo, computeContentSummary, computeQuotaUsage, computeQuotaUsage, dumpTreeRecursively, dumpTreeRecursively, equals, getAccessTime, getFsPermission, getFullPathName, getGroupName, getKey, getLocalName, getModificationTime, getObjectString, getParent, getParentReference, getParentString, getUserName, hashCode, isAncestorDirectory, isInLatestSnapshot, isQuotaSet, setAccessTime, setModificationTime, setParent, setParentReference, shouldRecordInSrcSnapshot, toDetailString, toString

Methods inherited from class java.lang.Object

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

Field Detail

WITHNAME_COMPARATOR

public static final Comparator<INodeReference.WithName> WITHNAME_COMPARATOR

Compare snapshot with IDs, where null indicates the current status thus is greater than any non-null snapshot.

Constructor Detail

INodeReference.WithCount

public INodeReference.WithCount(INodeReference parent,
                                org.apache.hadoop.hdfs.server.namenode.INode referred)

Method Detail

getReferenceCount

public int getReferenceCount()

addReference

public void addReference(INodeReference ref)

Increment and then return the reference count.

removeReference

public void removeReference(INodeReference ref)

Decrement and then return the reference count.