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HDFS-4077. Adding a file missed in the commit r1400318.

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git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/HDFS-2802@1400350 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Suresh Srinivas 2012-10-20 00:31:57 +00:00
parent af130d4baf
commit a2d837b0e9
1 changed files with 48 additions and 0 deletions
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48
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/snapshot/INodeDirectorySnapshottable.java Normal file
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@ -0,0 +1,48 @@
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hdfs.server.namenode.snapshot;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.hdfs.server.namenode.INodeDirectory;
import org.apache.hadoop.hdfs.server.namenode.INodeDirectoryWithQuota;
/** Directories where taking snapshots is allowed. */
@InterfaceAudience.Private
public class INodeDirectorySnapshottable extends INodeDirectoryWithQuota {
static public INodeDirectorySnapshottable newInstance(final INodeDirectory dir) {
long nsq = -1L;
long dsq = -1L;
if (dir instanceof INodeDirectoryWithQuota) {
final INodeDirectoryWithQuota q = (INodeDirectoryWithQuota)dir;
nsq = q.getNsQuota();
dsq = q.getDsQuota();
}
return new INodeDirectorySnapshottable(nsq, dsq, dir);
}
private INodeDirectorySnapshottable(long nsQuota, long dsQuota,
INodeDirectory dir) {
super(nsQuota, dsQuota, dir);
}
@Override
public boolean isSnapshottable() {
return true;
}
}