org.apache.hadoop.hdfs.server.namenode

Class FSImageFormatProtobuf.Loader

java.lang.Object

org.apache.hadoop.hdfs.server.namenode.FSImageFormatProtobuf.Loader

Enclosing class:

org.apache.hadoop.hdfs.server.namenode.FSImageFormatProtobuf

public static final class FSImageFormatProtobuf.Loader
extends Object

Method Summary

Methods

Modifier and Type	Method and Description
InputStream	getInputStreamForSection(FsImageProto.FileSummary.Section section, String compressionCodec) Given a FSImage FileSummary.section, return a LimitInput stream set to the starting position of the section and limited to the section length.
org.apache.hadoop.io.MD5Hash	getLoadedImageMd5()
long	getLoadedImageTxId()
FSImageFormatProtobuf.LoaderContext	getLoaderContext()

Methods inherited from class java.lang.Object

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

Method Detail

getLoadedImageMd5

public org.apache.hadoop.io.MD5Hash getLoadedImageMd5()

getLoadedImageTxId

public long getLoadedImageTxId()

getLoaderContext

public FSImageFormatProtobuf.LoaderContext getLoaderContext()

getInputStreamForSection

public InputStream getInputStreamForSection(FsImageProto.FileSummary.Section section,
                                   String compressionCodec)
                                     throws IOException

Given a FSImage FileSummary.section, return a LimitInput stream set to the starting position of the section and limited to the section length.

Parameters:

section - The FileSummary.Section containing the offset and length

compressionCodec - The compression codec in use, if any

Returns:

An InputStream for the given section

Throws:

IOException