Package org.apache.hadoop.hdfs.tools.snapshot

Class SnapshotDiff

java.lang.Object

org.apache.hadoop.conf.Configured

org.apache.hadoop.hdfs.tools.snapshot.SnapshotDiff

All Implemented Interfaces:

org.apache.hadoop.conf.Configurable, org.apache.hadoop.util.Tool

@Private
public class SnapshotDiff
extends org.apache.hadoop.conf.Configured
implements org.apache.hadoop.util.Tool

A tool used to get the difference report between two snapshots, or between a snapshot and the current status of a directory.

 Usage: SnapshotDiff snapshotDir from to
 For from/to, users can use "." to present the current status, and use 
 ".snapshot/snapshot_name" to present a snapshot, where ".snapshot/" can be 
 omitted.
 

Constructor Summary

Constructors

Constructor	Description
SnapshotDiff()	Construct a SnapshotDiff object.
SnapshotDiff(org.apache.hadoop.conf.Configuration conf)	Construct a SnapshotDiff object.

Method Summary

Modifier and Type	Method	Description
static void	main(java.lang.String[] argv)
int	run(java.lang.String[] argv)

Methods inherited from class org.apache.hadoop.conf.Configured

getConf, setConf

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.hadoop.conf.Configurable

getConf, setConf

Constructor Detail

SnapshotDiff

public SnapshotDiff()

Construct a SnapshotDiff object.

SnapshotDiff

public SnapshotDiff(org.apache.hadoop.conf.Configuration conf)

Construct a SnapshotDiff object.

Method Detail

run

public int run(java.lang.String[] argv)
        throws java.lang.Exception

Specified by:

run in interface org.apache.hadoop.util.Tool

Throws:

java.lang.Exception

main

public static void main(java.lang.String[] argv)
                 throws java.lang.Exception

Throws:

java.lang.Exception