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* 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,
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package org.apache.cassandra.db;
import java.net.InetAddress;
import java.util.Collections;
import java.util.List;
import java.util.concurrent.ExecutionException;
import com.google.common.collect.Lists;
import org.junit.Before;
import org.junit.Test;
import org.apache.cassandra.SchemaLoader;
import org.apache.cassandra.Util;
import org.apache.cassandra.config.DatabaseDescriptor;
import org.apache.cassandra.cql3.QueryProcessor;
import org.apache.cassandra.cql3.UntypedResultSet;
import org.apache.cassandra.db.commitlog.ReplayPosition;
import org.apache.cassandra.locator.TokenMetadata;
import org.apache.cassandra.service.StorageService;
import org.apache.cassandra.utils.UUIDGen;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.apache.cassandra.utils.ByteBufferUtil.bytes;
public class BatchlogManagerTest extends SchemaLoader
{
@Before
public void setUp() throws Exception
{
TokenMetadata metadata = StorageService.instance.getTokenMetadata();
InetAddress localhost = InetAddress.getByName("127.0.0.1");
metadata.updateNormalToken(Util.token("A"), localhost);
metadata.updateHostId(UUIDGen.getTimeUUID(), localhost);
}
@Test
public void testReplay() throws Exception
{
long initialAllBatches = BatchlogManager.instance.countAllBatches();
long initialReplayedBatches = BatchlogManager.instance.getTotalBatchesReplayed();
// Generate 1000 mutations and put them all into the batchlog.
// Half (500) ready to be replayed, half not.
for (int i = 0; i < 1000; i++)
{
RowMutation mutation = new RowMutation("Keyspace1", bytes(i));
mutation.add("Standard1", bytes(i), bytes(i), System.currentTimeMillis());
long timestamp = i < 500
? (System.currentTimeMillis() - DatabaseDescriptor.getWriteRpcTimeout() * 2) * 1000
: Long.MAX_VALUE;
BatchlogManager.getBatchlogMutationFor(Collections.singleton(mutation), UUIDGen.getTimeUUID(), timestamp).apply();
}
// Flush the batchlog to disk (see CASSANDRA-6822).
Keyspace.open(Keyspace.SYSTEM_KS).getColumnFamilyStore(SystemKeyspace.BATCHLOG_CF).forceBlockingFlush();
assertEquals(1000, BatchlogManager.instance.countAllBatches() - initialAllBatches);
assertEquals(0, BatchlogManager.instance.getTotalBatchesReplayed() - initialReplayedBatches);
// Force batchlog replay and wait for it to complete.
BatchlogManager.instance.startBatchlogReplay().get();
// Ensure that the first half, and only the first half, got replayed.
assertEquals(500, BatchlogManager.instance.countAllBatches() - initialAllBatches);
assertEquals(500, BatchlogManager.instance.getTotalBatchesReplayed() - initialReplayedBatches);
for (int i = 0; i < 1000; i++)
{
UntypedResultSet result = QueryProcessor.processInternal(String.format("SELECT * FROM \"Keyspace1\".\"Standard1\" WHERE key = intAsBlob(%d)", i));
if (i < 500)
{
assertEquals(bytes(i), result.one().getBytes("key"));
assertEquals(bytes(i), result.one().getBytes("column1"));
assertEquals(bytes(i), result.one().getBytes("value"));
}
else
{
assertTrue(result.isEmpty());
}
}
// Ensure that no stray mutations got somehow applied.
UntypedResultSet result = QueryProcessor.processInternal(String.format("SELECT count(*) FROM \"Keyspace1\".\"Standard1\""));
assertEquals(500, result.one().getLong("count"));
}
@Test
public void testTruncatedReplay() throws InterruptedException, ExecutionException
{
// Generate 2000 mutations (1000 batchlog entries) and put them all into the batchlog.
// Each batchlog entry with a mutation for Standard2 and Standard3.
// In the middle of the process, 'truncate' Standard2.
for (int i = 0; i < 1000; i++)
{
RowMutation mutation1 = new RowMutation("Keyspace1", bytes(i));
mutation1.add("Standard2", bytes(i), bytes(i), 0);
RowMutation mutation2 = new RowMutation("Keyspace1", bytes(i));
mutation2.add("Standard3", bytes(i), bytes(i), 0);
List<RowMutation> mutations = Lists.newArrayList(mutation1, mutation2);
// Make sure it's ready to be replayed, so adjust the timestamp.
long timestamp = System.currentTimeMillis() - DatabaseDescriptor.getWriteRpcTimeout() * 2;
if (i == 500)
SystemKeyspace.saveTruncationRecord(Keyspace.open("Keyspace1").getColumnFamilyStore("Standard2"),
timestamp,
ReplayPosition.NONE);
// Adjust the timestamp (slightly) to make the test deterministic.
if (i >= 500)
timestamp++;
else
timestamp--;
BatchlogManager.getBatchlogMutationFor(mutations, UUIDGen.getTimeUUID(), timestamp * 1000).apply();
}
// Flush the batchlog to disk (see CASSANDRA-6822).
Keyspace.open(Keyspace.SYSTEM_KS).getColumnFamilyStore(SystemKeyspace.BATCHLOG_CF).forceFlush();
// Force batchlog replay and wait for it to complete.
BatchlogManager.instance.startBatchlogReplay().get();
// We should see half of Standard2-targeted mutations written after the replay and all of Standard3 mutations applied.
for (int i = 0; i < 1000; i++)
{
UntypedResultSet result = QueryProcessor.processInternal(String.format("SELECT * FROM \"Keyspace1\".\"Standard2\" WHERE key = intAsBlob(%d)", i));
if (i >= 500)
{
assertEquals(bytes(i), result.one().getBytes("key"));
assertEquals(bytes(i), result.one().getBytes("column1"));
assertEquals(bytes(i), result.one().getBytes("value"));
}
else
{
assertTrue(result.isEmpty());
}
}
for (int i = 0; i < 1000; i++)
{
UntypedResultSet result = QueryProcessor.processInternal(String.format("SELECT * FROM \"Keyspace1\".\"Standard3\" WHERE key = intAsBlob(%d)", i));
assertEquals(bytes(i), result.one().getBytes("key"));
assertEquals(bytes(i), result.one().getBytes("column1"));
assertEquals(bytes(i), result.one().getBytes("value"));
}
}
}