org.apache.hadoop.hdfs.server.namenode.snapshot

Class Snapshot.Root

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.snapshot.Snapshot.Root

All Implemented Interfaces:

Comparable<byte[]>, INodeAttributes, INodeDirectoryAttributes, Diff.Element<byte[]>, LightWeightGSet.LinkedElement

Enclosing class:

Snapshot

public static class Snapshot.Root
extends INodeDirectory

The root directory of the snapshot.

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

Method Summary

Methods

Modifier and Type	Method and Description
INode	getChild(byte[] name, Snapshot snapshot)
ReadOnlyList<INode>	getChildrenList(Snapshot snapshot)
String	getFullPathName()

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

addChild, addChild, asDirectory, cleanSubtree, cleanSubtreeRecursively, clear, clearChildren, computeContentSummary, computeQuotaUsage, computeQuotaUsage4CurrentDirectory, destroyAndCollectBlocks, dumpTreeRecursively, dumpTreeRecursively, 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

addSpaceConsumed, asFile, asReference, asSymlink, compareTo, computeContentSummary, computeQuotaUsage, computeQuotaUsage, dumpTreeRecursively, dumpTreeRecursively, equals, getAccessTime, getDsQuota, getFsPermission, getGroupName, getKey, getLocalName, getModificationTime, getNsQuota, 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.INodeDirectoryAttributes

getDsQuota, getNsQuota

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

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

Method Detail

getChildrenList

public ReadOnlyList<INode> getChildrenList(Snapshot snapshot)

Overrides:

getChildrenList in class INodeDirectory

Parameters:

snapshot - if it is not null, get the result from the given snapshot; otherwise, get the result from the current directory.

Returns:

the current children list if the specified snapshot is null; otherwise, return the children list corresponding to the snapshot. Note that the returned list is never null.

getChild

public INode getChild(byte[] name,
             Snapshot snapshot)

Overrides:

getChild in class INodeDirectory

Parameters:

name - the name of the child

snapshot - if it is not null, get the result from the given snapshot; otherwise, get the result from the current directory.

Returns:

the child inode.

getFullPathName

public String getFullPathName()

Overrides:

getFullPathName in class INode