Package org.apache.hadoop.fs.http.server

Class FSOperations.FSGetSnapshotDiff

java.lang.Object

org.apache.hadoop.fs.http.server.FSOperations.FSGetSnapshotDiff

All Implemented Interfaces:

FileSystemAccess.FileSystemExecutor<String>

Enclosing class:

FSOperations

@Private
public static class FSOperations.FSGetSnapshotDiff
extends Object
implements FileSystemAccess.FileSystemExecutor<String>

Executor that performs a getSnapshotDiff operation.

Constructor Summary

Constructors

Constructor	Description
FSGetSnapshotDiff(String path, String oldSnapshotName, String snapshotName)	Creates a getSnapshotDiff executor.

Method Summary

Modifier and Type	Method	Description
String	execute(org.apache.hadoop.fs.FileSystem fs)	Executes the filesystem operation.

Methods inherited from class java.lang.Object

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

Constructor Details

FSGetSnapshotDiff

public FSGetSnapshotDiff(String path,
 String oldSnapshotName,
 String snapshotName)

Creates a getSnapshotDiff executor.

Parameters:

path - directory path of the snapshots to be examined.

oldSnapshotName - Older snapshot name.

snapshotName - Newer snapshot name.

Method Details

execute

public String execute(org.apache.hadoop.fs.FileSystem fs)
               throws IOException

Executes the filesystem operation.

Specified by:

execute in interface FileSystemAccess.FileSystemExecutor<String>

Parameters:

fs - filesystem instance to use.

Returns:

A serialized JSON string of snapshot diffs.

Throws:

IOException - thrown if an IO error occurred.