[120] | 1 | /** |
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| 2 | * Licensed to the Apache Software Foundation (ASF) under one |
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| 3 | * or more contributor license agreements. See the NOTICE file |
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| 4 | * distributed with this work for additional information |
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| 5 | * regarding copyright ownership. The ASF licenses this file |
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| 6 | * to you under the Apache License, Version 2.0 (the |
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| 7 | * "License"); you may not use this file except in compliance |
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| 8 | * with the License. You may obtain a copy of the License at |
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| 9 | * |
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| 10 | * http://www.apache.org/licenses/LICENSE-2.0 |
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| 11 | * |
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| 12 | * Unless required by applicable law or agreed to in writing, software |
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| 13 | * distributed under the License is distributed on an "AS IS" BASIS, |
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| 14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| 15 | * See the License for the specific language governing permissions and |
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| 16 | * limitations under the License. |
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| 17 | */ |
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| 18 | package org.apache.hadoop.hdfs.server.namenode; |
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| 19 | |
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| 20 | import java.util.ArrayList; |
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| 21 | |
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| 22 | import org.apache.hadoop.hdfs.protocol.Block; |
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| 23 | import org.apache.hadoop.hdfs.server.common.GenerationStamp; |
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| 24 | import org.apache.hadoop.hdfs.server.protocol.BlockCommand; |
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| 25 | |
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| 26 | import junit.framework.TestCase; |
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| 27 | |
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| 28 | /** |
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| 29 | * This class tests that methods in DatanodeDescriptor |
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| 30 | */ |
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| 31 | public class TestDatanodeDescriptor extends TestCase { |
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| 32 | /** |
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| 33 | * Test that getInvalidateBlocks observes the maxlimit. |
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| 34 | */ |
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| 35 | public void testGetInvalidateBlocks() throws Exception { |
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| 36 | final int MAX_BLOCKS = 10; |
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| 37 | final int REMAINING_BLOCKS = 2; |
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| 38 | final int MAX_LIMIT = MAX_BLOCKS - REMAINING_BLOCKS; |
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| 39 | |
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| 40 | DatanodeDescriptor dd = new DatanodeDescriptor(); |
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| 41 | ArrayList<Block> blockList = new ArrayList<Block>(MAX_BLOCKS); |
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| 42 | for (int i=0; i<MAX_BLOCKS; i++) { |
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| 43 | blockList.add(new Block(i, 0, GenerationStamp.FIRST_VALID_STAMP)); |
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| 44 | } |
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| 45 | dd.addBlocksToBeInvalidated(blockList); |
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| 46 | BlockCommand bc = dd.getInvalidateBlocks(MAX_LIMIT); |
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| 47 | assertEquals(bc.getBlocks().length, MAX_LIMIT); |
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| 48 | bc = dd.getInvalidateBlocks(MAX_LIMIT); |
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| 49 | assertEquals(bc.getBlocks().length, REMAINING_BLOCKS); |
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| 50 | } |
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| 51 | } |
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