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

Class FileDiff

java.lang.Object

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

All Implemented Interfaces:

Comparable<Integer>

public class FileDiff
extends Object

The difference of an INodeFile between two snapshots.

Method Summary

Modifier and Type	Method and Description
int	compareTo(Integer that) Compare diffs with snapshot ID.
void	destroyAndCollectSnapshotBlocks(INode.BlocksMapUpdateInfo collectedBlocks)
org.apache.hadoop.hdfs.server.blockmanagement.BlockInfo[]	getBlocks()
long	getFileSize()
int	getSnapshotId()
void	setBlocks(org.apache.hadoop.hdfs.server.blockmanagement.BlockInfo[] blocks) Copy block references into the snapshot up to the current fileSize.
String	toString()

Methods inherited from class java.lang.Object

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

Method Detail

getFileSize

public long getFileSize()

Returns:

the file size in the snapshot.

setBlocks

public void setBlocks(org.apache.hadoop.hdfs.server.blockmanagement.BlockInfo[] blocks)

Copy block references into the snapshot up to the current fileSize. Should be done only once.

getBlocks

public org.apache.hadoop.hdfs.server.blockmanagement.BlockInfo[] getBlocks()

toString

public String toString()

destroyAndCollectSnapshotBlocks

public void destroyAndCollectSnapshotBlocks(INode.BlocksMapUpdateInfo collectedBlocks)

compareTo

public final int compareTo(Integer that)

Compare diffs with snapshot ID.

Specified by:

compareTo in interface Comparable<Integer>

getSnapshotId

public final int getSnapshotId()

Returns:

the snapshot object of this diff.