Package org.apache.hadoop.hdfs.server.namenode

Class FSTreeWalk

java.lang.Object

org.apache.hadoop.hdfs.server.namenode.TreeWalk

org.apache.hadoop.hdfs.server.namenode.FSTreeWalk

All Implemented Interfaces:

java.lang.Iterable<TreePath>

@Public
@Unstable
public class FSTreeWalk
extends TreeWalk

Traversal of an external FileSystem.

Nested Class Summary

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

TreeWalk.TreeIterator

Field Summary

Fields

Modifier and Type	Field	Description
static org.slf4j.Logger	LOG

Constructor Summary

Constructors

Constructor	Description
FSTreeWalk(org.apache.hadoop.fs.Path root, org.apache.hadoop.conf.Configuration conf)

Method Summary

Modifier and Type	Method	Description
protected java.lang.Iterable<TreePath>	getChildren(TreePath path, long id, TreeWalk.TreeIterator i)
TreeWalk.TreeIterator	iterator()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Field Detail

LOG

public static final org.slf4j.Logger LOG

Constructor Detail

FSTreeWalk

public FSTreeWalk(org.apache.hadoop.fs.Path root,
                  org.apache.hadoop.conf.Configuration conf)
           throws java.io.IOException

Throws:

java.io.IOException

Method Detail

getChildren

protected java.lang.Iterable<TreePath> getChildren(TreePath path,
                                                   long id,
                                                   TreeWalk.TreeIterator i)

Specified by:

getChildren in class TreeWalk

Parameters:

path - path to the node being explored.

id - the id of the node.

i - the TreeWalk.TreeIterator to use.

Returns:

paths representing the children of the current node.

iterator

public TreeWalk.TreeIterator iterator()

Specified by:

iterator in interface java.lang.Iterable<TreePath>

Specified by:

iterator in class TreeWalk