TestDatanodeDescriptor.java
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- /**
- * 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;
- import java.util.ArrayList;
- import org.apache.hadoop.hdfs.protocol.Block;
- import org.apache.hadoop.hdfs.server.common.GenerationStamp;
- import org.apache.hadoop.hdfs.server.protocol.BlockCommand;
- import junit.framework.TestCase;
- /**
- * This class tests that methods in DatanodeDescriptor
- */
- public class TestDatanodeDescriptor extends TestCase {
- /**
- * Test that getInvalidateBlocks observes the maxlimit.
- */
- public void testGetInvalidateBlocks() throws Exception {
- final int MAX_BLOCKS = 10;
- final int REMAINING_BLOCKS = 2;
- final int MAX_LIMIT = MAX_BLOCKS - REMAINING_BLOCKS;
-
- DatanodeDescriptor dd = new DatanodeDescriptor();
- ArrayList<Block> blockList = new ArrayList<Block>(MAX_BLOCKS);
- for (int i=0; i<MAX_BLOCKS; i++) {
- blockList.add(new Block(i, 0, GenerationStamp.FIRST_VALID_STAMP));
- }
- dd.addBlocksToBeInvalidated(blockList);
- BlockCommand bc = dd.getInvalidateBlocks(MAX_LIMIT);
- assertEquals(bc.getBlocks().length, MAX_LIMIT);
- bc = dd.getInvalidateBlocks(MAX_LIMIT);
- assertEquals(bc.getBlocks().length, REMAINING_BLOCKS);
- }
- }