org.apache.hadoop.hdfs.server.namenode.snapshot
Class FSImageFormatPBSnapshot.Loader

java.lang.Object
  org.apache.hadoop.hdfs.server.namenode.snapshot.FSImageFormatPBSnapshot.Loader

Enclosing class:

org.apache.hadoop.hdfs.server.namenode.snapshot.FSImageFormatPBSnapshot

public static final class FSImageFormatPBSnapshot.Loader
extends Object

Loading snapshot related information from protobuf based FSImage

Constructor Summary

FSImageFormatPBSnapshot.Loader(org.apache.hadoop.hdfs.server.namenode.FSNamesystem fsn, FSImageFormatProtobuf.Loader parent)

Method Summary

void	loadINodeReferenceSection(InputStream in) The sequence of the ref node in refList must be strictly the same with the sequence in fsimage
void	loadSnapshotDiffSection(InputStream in) Load the snapshot diff section from fsimage.
void	loadSnapshotSection(InputStream in) Load the snapshots section from fsimage.

Methods inherited from class java.lang.Object

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

Constructor Detail

FSImageFormatPBSnapshot.Loader

public FSImageFormatPBSnapshot.Loader(org.apache.hadoop.hdfs.server.namenode.FSNamesystem fsn,
                                      FSImageFormatProtobuf.Loader parent)

Method Detail

loadINodeReferenceSection

public void loadINodeReferenceSection(InputStream in)
                               throws IOException

The sequence of the ref node in refList must be strictly the same with the sequence in fsimage

Throws:

IOException

loadSnapshotSection

public void loadSnapshotSection(InputStream in)
                         throws IOException

Load the snapshots section from fsimage. Also convert snapshottable directories into INodeDirectorySnapshottable.

Throws:

IOException

loadSnapshotDiffSection

public void loadSnapshotDiffSection(InputStream in)
                             throws IOException

Load the snapshot diff section from fsimage.

Throws:

IOException