| /* |
| * 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.distributed.test; |
| |
| import java.util.concurrent.atomic.AtomicInteger; |
| import java.util.function.Consumer; |
| |
| import org.junit.Assert; |
| import org.junit.Before; |
| import org.junit.BeforeClass; |
| import org.junit.Test; |
| |
| import org.apache.cassandra.cql3.QueryProcessor; |
| import org.apache.cassandra.cql3.UntypedResultSet; |
| import org.apache.cassandra.distributed.Cluster; |
| import org.apache.cassandra.distributed.api.ConsistencyLevel; |
| import org.apache.cassandra.distributed.api.Feature; |
| import org.apache.cassandra.distributed.api.IInstanceConfig; |
| import org.apache.cassandra.service.paxos.PaxosCommit; |
| import org.apache.cassandra.utils.ByteBufferUtil; |
| |
| import static org.apache.cassandra.distributed.api.ConsistencyLevel.*; |
| |
| public class CASMultiDCTest |
| { |
| private static Cluster CLUSTER; |
| private static final String KEYSPACE = "ks"; |
| private static final String TABLE = "tbl"; |
| private static final String KS_TBL = KEYSPACE + '.' + TABLE; |
| |
| private static final AtomicInteger nextKey = new AtomicInteger(); |
| |
| @BeforeClass |
| public static void beforeClass() throws Throwable |
| { |
| TestBaseImpl.beforeClass(); |
| Consumer<IInstanceConfig> conf = config -> config |
| .with(Feature.NETWORK) |
| .set("paxos_variant", "v2") |
| .set("write_request_timeout_in_ms", 1000L) |
| .set("cas_contention_timeout_in_ms", 1000L) |
| .set("request_timeout_in_ms", 1000L); |
| |
| Cluster.Builder builder = new Cluster.Builder(); |
| builder.withNodes(4); |
| builder.withDCs(2); |
| builder.withConfig(conf); |
| CLUSTER = builder.start(); |
| CLUSTER.schemaChange("CREATE KEYSPACE " + KEYSPACE + " WITH replication = {'class': 'NetworkTopologyStrategy', 'datacenter1':2, 'datacenter2':2};"); |
| CLUSTER.schemaChange("CREATE TABLE " + KS_TBL + " (k int, c int, v int, primary key (k, v))"); |
| CLUSTER.forEach(i -> i.runOnInstance(() -> { |
| Assert.assertTrue(PaxosCommit.getEnableDcLocalCommit()); // should be enabled by default |
| })); |
| } |
| |
| @Before |
| public void setUp() |
| { |
| CLUSTER.forEach(i -> i.runOnInstance(() -> { |
| PaxosCommit.setEnableDcLocalCommit(true); |
| })); |
| } |
| |
| private static void testLocalSerialCommit(ConsistencyLevel serialCL, ConsistencyLevel commitCL, int key, boolean expectRemoteCommit) |
| { |
| for (int i=0; i<CLUSTER.size(); i++) |
| { |
| CLUSTER.get(i + 1).runOnInstance(() -> { |
| UntypedResultSet result = QueryProcessor.executeInternal("SELECT * FROM system.paxos WHERE row_key=?", ByteBufferUtil.bytes(key)); |
| Assert.assertEquals(0, result.size()); |
| }); |
| } |
| |
| CLUSTER.coordinator(1).execute("INSERT INTO " + KS_TBL + " (k, c, v) VALUES (?, ?, ?) IF NOT EXISTS", serialCL, commitCL, key, key, key); |
| |
| int numCommitted = 0; |
| int numWritten = 0; |
| for (int i=0; i<CLUSTER.size(); i++) |
| { |
| boolean expectPaxosRows = expectRemoteCommit || i < 2; |
| int flags = CLUSTER.get(i + 1).callOnInstance(() -> { |
| int numPaxosRows = QueryProcessor.executeInternal("SELECT * FROM system.paxos WHERE row_key=?", ByteBufferUtil.bytes(key)).size(); |
| Assert.assertTrue(numPaxosRows == 0 || numPaxosRows == 1); |
| if (!expectRemoteCommit) |
| Assert.assertEquals(expectPaxosRows ? 1 : 0, numPaxosRows); |
| int numTableRows = QueryProcessor.executeInternal("SELECT * FROM " + KS_TBL + " WHERE k=?", ByteBufferUtil.bytes(key)).size(); |
| Assert.assertTrue(numTableRows == 0 || numTableRows == 1); |
| return (numPaxosRows > 0 ? 1 : 0) | (numTableRows > 0 ? 2 : 0); |
| }); |
| if ((flags & 1) != 0) |
| numCommitted++; |
| if ((flags & 2) != 0) |
| numWritten++; |
| } |
| Assert.assertTrue(String.format("numWritten: %s < 3", numWritten), numWritten >= 3); |
| if (expectRemoteCommit) |
| Assert.assertTrue(String.format("numCommitted: %s < 3", numCommitted), numCommitted >= 3); |
| else |
| Assert.assertEquals(2, numCommitted); |
| } |
| |
| @Test |
| public void testLocalSerialLocalCommit() |
| { |
| testLocalSerialCommit(LOCAL_SERIAL, LOCAL_QUORUM, nextKey.getAndIncrement(), false); |
| } |
| |
| @Test |
| public void testLocalSerialQuorumCommit() |
| { |
| testLocalSerialCommit(LOCAL_SERIAL, QUORUM, nextKey.getAndIncrement(), false); |
| } |
| |
| @Test |
| public void testSerialLocalCommit() |
| { |
| testLocalSerialCommit(SERIAL, LOCAL_QUORUM, nextKey.getAndIncrement(), true); |
| } |
| |
| @Test |
| public void testSerialQuorumCommit() |
| { |
| testLocalSerialCommit(SERIAL, QUORUM, nextKey.getAndIncrement(), true); |
| } |
| |
| @Test |
| public void testDcLocalCommitDisabled() |
| { |
| CLUSTER.forEach(i -> i.runOnInstance(() -> { |
| PaxosCommit.setEnableDcLocalCommit(false); |
| })); |
| testLocalSerialCommit(LOCAL_SERIAL, QUORUM, nextKey.getAndIncrement(), true); |
| } |
| } |