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* 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.repair;
import java.net.InetAddress;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;
import java.util.UUID;
import org.junit.BeforeClass;
import org.junit.Test;
import org.apache.cassandra.SchemaLoader;
import org.apache.cassandra.config.KSMetaData;
import org.apache.cassandra.db.ColumnFamilyStore;
import org.apache.cassandra.db.Keyspace;
import org.apache.cassandra.dht.IPartitioner;
import org.apache.cassandra.dht.Murmur3Partitioner;
import org.apache.cassandra.dht.Range;
import org.apache.cassandra.dht.Token;
import org.apache.cassandra.locator.SimpleStrategy;
import org.apache.cassandra.service.ActiveRepairService;
import org.apache.cassandra.utils.MerkleTree;
import static org.junit.Assert.assertEquals;
public class LocalSyncTaskTest extends SchemaLoader
{
private static final IPartitioner partirioner = new Murmur3Partitioner();
public static final String KEYSPACE1 = "DifferencerTest";
public static final String CF_STANDARD = "Standard1";
@BeforeClass
public static void defineSchema() throws Exception
{
SchemaLoader.prepareServer();
SchemaLoader.createKeyspace(KEYSPACE1,
SimpleStrategy.class,
KSMetaData.optsWithRF(1),
SchemaLoader.standardCFMD(KEYSPACE1, CF_STANDARD));
}
/**
* When there is no difference between two, LocalSyncTask should return stats with 0 difference.
*/
@Test
public void testNoDifference() throws Throwable
{
final InetAddress ep1 = InetAddress.getByName("127.0.0.1");
final InetAddress ep2 = InetAddress.getByName("127.0.0.1");
Range<Token> range = new Range<>(partirioner.getMinimumToken(), partirioner.getRandomToken());
RepairJobDesc desc = new RepairJobDesc(UUID.randomUUID(), UUID.randomUUID(), KEYSPACE1, "Standard1", range);
MerkleTree tree1 = createInitialTree(desc);
MerkleTree tree2 = createInitialTree(desc);
// difference the trees
// note: we reuse the same endpoint which is bogus in theory but fine here
TreeResponse r1 = new TreeResponse(ep1, tree1);
TreeResponse r2 = new TreeResponse(ep2, tree2);
LocalSyncTask task = new LocalSyncTask(desc, r1, r2, ActiveRepairService.UNREPAIRED_SSTABLE);
task.run();
assertEquals(0, task.get().numberOfDifferences);
}
@Test
public void testDifference() throws Throwable
{
Range<Token> range = new Range<>(partirioner.getMinimumToken(), partirioner.getRandomToken());
UUID parentRepairSession = UUID.randomUUID();
Keyspace keyspace = Keyspace.open(KEYSPACE1);
ColumnFamilyStore cfs = keyspace.getColumnFamilyStore("Standard1");
ActiveRepairService.instance.registerParentRepairSession(parentRepairSession, Arrays.asList(cfs), Arrays.asList(range), false);
RepairJobDesc desc = new RepairJobDesc(parentRepairSession, UUID.randomUUID(), KEYSPACE1, "Standard1", range);
MerkleTree tree1 = createInitialTree(desc);
MerkleTree tree2 = createInitialTree(desc);
// change a range in one of the trees
Token token = partirioner.midpoint(range.left, range.right);
tree1.invalidate(token);
MerkleTree.TreeRange changed = tree1.get(token);
changed.hash("non-empty hash!".getBytes());
Set<Range<Token>> interesting = new HashSet<>();
interesting.add(changed);
// difference the trees
// note: we reuse the same endpoint which is bogus in theory but fine here
TreeResponse r1 = new TreeResponse(InetAddress.getByName("127.0.0.1"), tree1);
TreeResponse r2 = new TreeResponse(InetAddress.getByName("127.0.0.2"), tree2);
LocalSyncTask task = new LocalSyncTask(desc, r1, r2, ActiveRepairService.UNREPAIRED_SSTABLE);
task.run();
// ensure that the changed range was recorded
assertEquals("Wrong differing ranges", interesting.size(), task.getCurrentStat().numberOfDifferences);
}
private MerkleTree createInitialTree(RepairJobDesc desc)
{
MerkleTree tree = new MerkleTree(partirioner, desc.range, MerkleTree.RECOMMENDED_DEPTH, (int)Math.pow(2, 15));
tree.init();
for (MerkleTree.TreeRange r : tree.invalids())
{
r.ensureHashInitialised();
}
return tree;
}
}