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

Class FSImageUtil

java.lang.Object

org.apache.hadoop.hdfs.server.namenode.FSImageUtil

@Private
public final class FSImageUtil
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
static final int	FILE_VERSION
static final byte[]	MAGIC_HEADER

Constructor Summary

Constructors

Constructor	Description
FSImageUtil()

Method Summary

Modifier and Type	Method	Description
static boolean	checkFileFormat(RandomAccessFile file)
static FsImageProto.FileSummary	loadSummary(RandomAccessFile file)
static InputStream	wrapInputStreamForCompression(org.apache.hadoop.conf.Configuration conf, String codec, InputStream in)

Methods inherited from class java.lang.Object

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

Field Details

MAGIC_HEADER

public static final byte[] MAGIC_HEADER

FILE_VERSION

public static final int FILE_VERSION

See Also:

• Constant Field Values

Constructor Details

FSImageUtil

public FSImageUtil()

Method Details

checkFileFormat

public static boolean checkFileFormat(RandomAccessFile file)
                               throws IOException

Throws:

IOException

loadSummary

public static FsImageProto.FileSummary loadSummary(RandomAccessFile file)
                                            throws IOException

Throws:

IOException

wrapInputStreamForCompression

public static InputStream wrapInputStreamForCompression(org.apache.hadoop.conf.Configuration conf,
 String codec,
 InputStream in)
                                                 throws IOException

Throws:

IOException