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

Class ImageWriter

java.lang.Object

org.apache.hadoop.hdfs.server.namenode.ImageWriter

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

@Private
@Unstable
public class ImageWriter
extends java.lang.Object
implements java.io.Closeable

Utility crawling an existing hierarchical FileSystem and emitting a valid FSImage/NN storage.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	ImageWriter.Options	Configurable options for image generation mapping pluggable components.

Constructor Summary

Constructors

Constructor	Description
ImageWriter(ImageWriter.Options opts)

Method Summary

Modifier and Type	Method	Description
void	accept(TreePath e)
void	close()
static ImageWriter.Options	defaults()
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

ImageWriter

public ImageWriter(ImageWriter.Options opts)
            throws java.io.IOException

Throws:

java.io.IOException

Method Detail

defaults

public static ImageWriter.Options defaults()

accept

public void accept(TreePath e)
            throws java.io.IOException

Throws:

java.io.IOException

close

public void close()
           throws java.io.IOException

Specified by:

close in interface java.lang.AutoCloseable

Specified by:

close in interface java.io.Closeable

Throws:

java.io.IOException

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object