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HDFS-2969. ExtendedBlock.equals is incorrectly implemented. Contributed by Todd Lipcon. 

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.23@1245829 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Todd Lipcon 2012-02-18 01:13:04 +00:00
parent 0286c5fe05
commit d8cc39bb8f
3 changed files with 59 additions and 1 deletions
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2
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
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@ -47,6 +47,8 @@ Release 0.23.2 - UNRELEASED
HDFS-2938. Recursive delete of a large directory make namenode
unresponsive. (Hari Mankude via suresh)
HDFS-2969. ExtendedBlock.equals is incorrectly implemented (todd)
Release 0.23.1 - 2012-02-08
INCOMPATIBLE CHANGES

2
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocol/ExtendedBlock.java
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@ -145,7 +145,7 @@ public boolean equals(Object o) {
return false;
}
ExtendedBlock b = (ExtendedBlock)o;
return b.block.equals(block) || b.poolId.equals(poolId);
return b.block.equals(block) && b.poolId.equals(poolId);
}
@Override // Object

56
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/protocol/TestExtendedBlock.java Normal file
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@ -0,0 +1,56 @@
/**
* 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.protocol;
import static org.junit.Assert.*;
import org.junit.Test;
public class TestExtendedBlock {
static final String POOL_A = "blockpool-a";
static final String POOL_B = "blockpool-b";
static final Block BLOCK_1_GS1 = new Block(1L, 100L, 1L);
static final Block BLOCK_1_GS2 = new Block(1L, 100L, 2L);
static final Block BLOCK_2_GS1 = new Block(2L, 100L, 1L);
@Test
public void testEquals() {
// Same block -> equal
assertEquals(
new ExtendedBlock(POOL_A, BLOCK_1_GS1),
new ExtendedBlock(POOL_A, BLOCK_1_GS1));
// Different pools, same block id -> not equal
assertNotEquals(
new ExtendedBlock(POOL_A, BLOCK_1_GS1),
new ExtendedBlock(POOL_B, BLOCK_1_GS1));
// Same pool, different block id -> not equal
assertNotEquals(
new ExtendedBlock(POOL_A, BLOCK_1_GS1),
new ExtendedBlock(POOL_A, BLOCK_2_GS1));
// Same block, different genstamps -> equal
assertEquals(
new ExtendedBlock(POOL_A, BLOCK_1_GS1),
new ExtendedBlock(POOL_A, BLOCK_1_GS2));
}
private static void assertNotEquals(Object a, Object b) {
assertFalse("expected not equal: '" + a + "' and '" + b + "'",
a.equals(b));
}
}