/**
* 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.datanode;
import org.apache.hadoop.hdfs.protocol.Block;
import junit.framework.TestCase;
public class TestDirectoryScannerDeltaBasicOperations extends TestCase {
public void testDeltaBasicOperations() throws Exception {
FSDatasetDelta delta = new FSDatasetDelta();
delta.startRecordingDelta();
int nsid = 1989;
delta.addBlock(nsid, new Block(1));
assertEquals(1, delta.size(nsid));
// check delta is not accepting any blocks if
// it is switched off
delta.stopRecordingDelta();
delta.addBlock(nsid, new Block(2));
assertEquals(1, delta.size(nsid));
delta.startRecordingDelta();
delta.addBlock(nsid, new Block(2));
assertEquals(2, delta.size(nsid));
// the operation should overwrite the previous one
delta.removeBlock(nsid, new Block(2, 100, 1001));
assertEquals(2, delta.size(nsid));
// this operation should be added
delta.removeBlock(nsid, new Block(3));
assertEquals(3, delta.size(nsid));
delta.updateBlock(nsid, new Block(2), new Block(2, 101, 1002));
assertEquals(3, delta.size(nsid));
}
}