[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 junit.framework.TestCase; |
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| 21 | import java.lang.System; |
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| 22 | |
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| 23 | import org.apache.hadoop.hdfs.protocol.Block; |
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| 24 | |
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| 25 | /** |
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| 26 | * This class tests the internals of PendingReplicationBlocks.java |
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| 27 | */ |
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| 28 | public class TestPendingReplication extends TestCase { |
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| 29 | public void testPendingReplication() { |
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| 30 | int timeout = 10; // 10 seconds |
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| 31 | PendingReplicationBlocks pendingReplications; |
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| 32 | pendingReplications = new PendingReplicationBlocks(timeout * 1000); |
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| 33 | |
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| 34 | // |
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| 35 | // Add 10 blocks to pendingReplications. |
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| 36 | // |
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| 37 | for (int i = 0; i < 10; i++) { |
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| 38 | Block block = new Block(i, i, 0); |
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| 39 | pendingReplications.add(block, i); |
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| 40 | } |
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| 41 | assertEquals("Size of pendingReplications ", |
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| 42 | 10, pendingReplications.size()); |
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| 43 | |
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| 44 | |
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| 45 | // |
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| 46 | // remove one item and reinsert it |
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| 47 | // |
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| 48 | Block blk = new Block(8, 8, 0); |
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| 49 | pendingReplications.remove(blk); // removes one replica |
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| 50 | assertEquals("pendingReplications.getNumReplicas ", |
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| 51 | 7, pendingReplications.getNumReplicas(blk)); |
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| 52 | |
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| 53 | for (int i = 0; i < 7; i++) { |
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| 54 | pendingReplications.remove(blk); // removes all replicas |
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| 55 | } |
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| 56 | assertTrue(pendingReplications.size() == 9); |
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| 57 | pendingReplications.add(blk, 8); |
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| 58 | assertTrue(pendingReplications.size() == 10); |
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| 59 | |
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| 60 | // |
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| 61 | // verify that the number of replicas returned |
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| 62 | // are sane. |
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| 63 | // |
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| 64 | for (int i = 0; i < 10; i++) { |
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| 65 | Block block = new Block(i, i, 0); |
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| 66 | int numReplicas = pendingReplications.getNumReplicas(block); |
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| 67 | assertTrue(numReplicas == i); |
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| 68 | } |
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| 69 | |
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| 70 | // |
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| 71 | // verify that nothing has timed out so far |
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| 72 | // |
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| 73 | assertTrue(pendingReplications.getTimedOutBlocks() == null); |
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| 74 | |
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| 75 | // |
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| 76 | // Wait for one second and then insert some more items. |
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| 77 | // |
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| 78 | try { |
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| 79 | Thread.sleep(1000); |
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| 80 | } catch (Exception e) { |
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| 81 | } |
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| 82 | |
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| 83 | for (int i = 10; i < 15; i++) { |
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| 84 | Block block = new Block(i, i, 0); |
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| 85 | pendingReplications.add(block, i); |
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| 86 | } |
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| 87 | assertTrue(pendingReplications.size() == 15); |
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| 88 | |
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| 89 | // |
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| 90 | // Wait for everything to timeout. |
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| 91 | // |
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| 92 | int loop = 0; |
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| 93 | while (pendingReplications.size() > 0) { |
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| 94 | try { |
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| 95 | Thread.sleep(1000); |
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| 96 | } catch (Exception e) { |
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| 97 | } |
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| 98 | loop++; |
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| 99 | } |
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| 100 | System.out.println("Had to wait for " + loop + |
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| 101 | " seconds for the lot to timeout"); |
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| 102 | |
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| 103 | // |
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| 104 | // Verify that everything has timed out. |
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| 105 | // |
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| 106 | assertEquals("Size of pendingReplications ", |
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| 107 | 0, pendingReplications.size()); |
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| 108 | Block[] timedOut = pendingReplications.getTimedOutBlocks(); |
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| 109 | assertTrue(timedOut != null && timedOut.length == 15); |
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| 110 | for (int i = 0; i < timedOut.length; i++) { |
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| 111 | assertTrue(timedOut[i].getBlockId() < 15); |
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| 112 | } |
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| 113 | } |
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| 114 | } |
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