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

Enclosing class:

org.apache.hadoop.hdfs.server.namenode.snapshot.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, INode.Feature

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.INodeWithAdditionalFields

features

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

LOG

Method Summary

org.apache.hadoop.hdfs.server.namenode.INode	getChild(byte[] name, int snapshotId)
org.apache.hadoop.hdfs.util.ReadOnlyList<org.apache.hadoop.hdfs.server.namenode.INode>	getChildrenList(int snapshotId)
String	getFullPathName()

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

addChild, addChild, addSnapshotFeature, addSpaceConsumed, asDirectory, cleanSubtree, cleanSubtreeRecursively, clear, clearChildren, computeContentSummary, computeQuotaUsage, computeQuotaUsage4CurrentDirectory, destroyAndCollectBlocks, dumpTreeRecursively, dumpTreeRecursively, getChildrenNum, getDiffs, getDirectoryWithQuotaFeature, getDirectoryWithSnapshotFeature, getQuotaCounts, getSnapshotINode, isDirectory, isSnapshottable, isWithSnapshot, metadataEquals, recordModification, removeChild, removeChild, replaceChild, replaceSelf4INodeDirectory, replaceSelf4INodeDirectorySnapshottable, saveChild2Snapshot, toDetailString, undoRename4DstParent, undoRename4ScrParent, valueOf

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

addAclFeature, addFeature, getFeature, getFeatures, getFsPermissionShort, getId, getLocalNameBytes, getNext, getPermissionLong, removeAclFeature, removeFeature, setAccessTime, setLocalName, setModificationTime, setNext, updateModificationTime

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

asFile, asReference, asSymlink, compareTo, computeAndConvertContentSummary, computeContentSummary, computeQuotaUsage, computeQuotaUsage, dumpTreeRecursively, dumpTreeRecursively, equals, getAccessTime, getAclFeature, getFsPermission, getGroupName, getKey, getLocalName, getModificationTime, getObjectString, getParent, getParentReference, getParentString, getUserName, hashCode, isAncestorDirectory, isFile, isInLatestSnapshot, isQuotaSet, isReference, isSymlink, setAccessTime, setModificationTime, setParent, setParentReference, shouldRecordInSrcSnapshot, 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, getAclFeature, getFsPermission, getFsPermissionShort, getGroupName, getLocalNameBytes, getModificationTime, getPermissionLong, getUserName

Method Detail

getChildrenList

public org.apache.hadoop.hdfs.util.ReadOnlyList<org.apache.hadoop.hdfs.server.namenode.INode> getChildrenList(int snapshotId)

Overrides:

getChildrenList in class INodeDirectory

Parameters:

snapshotId - if it is not Snapshot.CURRENT_STATE_ID, get the result from the corresponding 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 org.apache.hadoop.hdfs.server.namenode.INode getChild(byte[] name,
                                                             int snapshotId)

Overrides:

getChild in class INodeDirectory

Parameters:

name - the name of the child

snapshotId - if it is not Snapshot.CURRENT_STATE_ID, get the result from the corresponding snapshot; otherwise, get the result from the current directory.

Returns:

the child inode.

getFullPathName

public String getFullPathName()

Overrides:

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