| /* |
| * 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.cassandra.dht.tokenallocator; |
| |
| import java.util.List; |
| |
| import org.junit.Assert; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| import org.apache.cassandra.dht.ByteOrderedPartitioner; |
| import org.apache.cassandra.dht.Murmur3Partitioner; |
| import org.apache.cassandra.tools.Util; |
| |
| import static org.apache.cassandra.dht.tokenallocator.OfflineTokenAllocator.allocate; |
| import static org.apache.cassandra.dht.tokenallocator.OfflineTokenAllocatorTestUtils.FAIL_ON_WARN_OUTPUT; |
| import static org.apache.cassandra.dht.tokenallocator.OfflineTokenAllocatorTestUtils.assertTokensAndNodeCount; |
| |
| public class OfflineTokenAllocatorTest |
| { |
| @Before |
| public void setup() |
| { |
| Util.initDatabaseDescriptor(); |
| } |
| |
| @Test(expected = UnsupportedOperationException.class) |
| public void testUnsupportedPartitioner() |
| { |
| List<OfflineTokenAllocator.FakeNode> nodes = allocate(3, 4, new int[]{1,1,1}, FAIL_ON_WARN_OUTPUT, ByteOrderedPartitioner.instance); |
| Assert.assertEquals(3, nodes.size()); |
| } |
| |
| @Test(expected = IllegalArgumentException.class) |
| public void testTokenGenerator_more_rf_than_racks() |
| { |
| OfflineTokenAllocator.allocate(3, 16, new int[]{1, 1}, FAIL_ON_WARN_OUTPUT, Murmur3Partitioner.instance); |
| } |
| |
| |
| @Test(expected = IllegalArgumentException.class) |
| public void testTokenGenerator_more_rf_than_nodes() |
| { |
| OfflineTokenAllocator.allocate(3, 16, new int[]{2}, FAIL_ON_WARN_OUTPUT, Murmur3Partitioner.instance); |
| } |
| |
| @Test |
| public void testTokenGenerator_single_rack_or_single_rf() |
| { |
| int numTokens = 16; |
| // Simple cases, single rack or single replication. |
| assertTokensAndNodeCount(numTokens, 1, allocate(1, |
| numTokens, |
| new int[]{1}, |
| FAIL_ON_WARN_OUTPUT, |
| Murmur3Partitioner.instance)); |
| assertTokensAndNodeCount(numTokens, 2, allocate(1, |
| numTokens, |
| new int[]{1, 1}, |
| FAIL_ON_WARN_OUTPUT, |
| Murmur3Partitioner.instance)); |
| assertTokensAndNodeCount(numTokens, 2, allocate(1, |
| numTokens, |
| new int[]{2}, |
| FAIL_ON_WARN_OUTPUT, |
| Murmur3Partitioner.instance)); |
| } |
| |
| @Test |
| public void testTokenGenerator_unbalanced_racks() |
| { |
| int numTokens = 16; |
| // Simple cases, single rack or single replication. |
| assertTokensAndNodeCount(numTokens, 6, allocate(1, |
| numTokens, |
| new int[]{5, 1}, |
| FAIL_ON_WARN_OUTPUT, |
| Murmur3Partitioner.instance)); |
| assertTokensAndNodeCount(numTokens, 7, allocate(1, |
| numTokens, |
| new int[]{5, 1, 1}, |
| FAIL_ON_WARN_OUTPUT, |
| Murmur3Partitioner.instance)); |
| assertTokensAndNodeCount(numTokens, 6, allocate(3, |
| numTokens, |
| new int[]{5, 1}, |
| FAIL_ON_WARN_OUTPUT, |
| Murmur3Partitioner.instance)); |
| assertTokensAndNodeCount(numTokens, 7, allocate(3, |
| numTokens, |
| new int[]{5, 1, 1}, |
| FAIL_ON_WARN_OUTPUT, |
| Murmur3Partitioner.instance)); |
| } |
| } |