/**
* 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.db.compaction;
import java.nio.ByteBuffer;
import java.util.Arrays;
import java.util.Collection;
import java.util.HashSet;
import java.util.List;
import java.util.Random;
import java.util.Set;
import java.util.concurrent.ExecutionException;
import java.util.UUID;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.apache.cassandra.OrderedJUnit4ClassRunner;
import org.apache.cassandra.SchemaLoader;
import org.apache.cassandra.Util;
import org.apache.cassandra.db.ColumnFamilyStore;
import org.apache.cassandra.db.DecoratedKey;
import org.apache.cassandra.db.RowMutation;
import org.apache.cassandra.db.Keyspace;
import org.apache.cassandra.dht.Range;
import org.apache.cassandra.dht.Token;
import org.apache.cassandra.io.sstable.Component;
import org.apache.cassandra.io.sstable.SSTable;
import org.apache.cassandra.io.sstable.SSTableReader;
import org.apache.cassandra.repair.RepairJobDesc;
import org.apache.cassandra.repair.Validator;
import org.apache.cassandra.utils.ByteBufferUtil;
import org.apache.cassandra.utils.FBUtilities;
import org.apache.cassandra.utils.Pair;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
@RunWith(OrderedJUnit4ClassRunner.class)
public class LeveledCompactionStrategyTest extends SchemaLoader
{
/*
* This exercises in particular the code of #4142
*/
@Test
public void testValidationMultipleSSTablePerLevel() throws Exception
{
String ksname = "Keyspace1";
String cfname = "StandardLeveled";
Keyspace keyspace = Keyspace.open(ksname);
ColumnFamilyStore cfs = keyspace.getColumnFamilyStore(cfname);
byte [] b = new byte[100 * 1024];
new Random().nextBytes(b);
ByteBuffer value = ByteBuffer.wrap(b); // 100 KB value, make it easy to have multiple files
// Enough data to have a level 1 and 2
int rows = 20;
int columns = 10;
// Adds enough data to trigger multiple sstable per level
for (int r = 0; r < rows; r++)
{
DecoratedKey key = Util.dk(String.valueOf(r));
RowMutation rm = new RowMutation(ksname, key.key);
for (int c = 0; c < columns; c++)
{
rm.add(cfname, ByteBufferUtil.bytes("column" + c), value, 0);
}
rm.apply();
cfs.forceBlockingFlush();
}
waitForLeveling(cfs);
LeveledCompactionStrategy strategy = (LeveledCompactionStrategy) cfs.getCompactionStrategy();
// Checking we're not completely bad at math
assertTrue(strategy.getLevelSize(1) > 0);
assertTrue(strategy.getLevelSize(2) > 0);
Range<Token> range = new Range<Token>(Util.token(""), Util.token(""));
int gcBefore = keyspace.getColumnFamilyStore(cfname).gcBefore(System.currentTimeMillis());
RepairJobDesc desc = new RepairJobDesc(UUID.randomUUID(), ksname, cfname, range);
Validator validator = new Validator(desc, FBUtilities.getBroadcastAddress(), gcBefore);
CompactionManager.instance.submitValidation(cfs, validator).get();
}
/**
* wait for leveled compaction to quiesce on the given columnfamily
*/
private void waitForLeveling(ColumnFamilyStore cfs) throws InterruptedException, ExecutionException
{
LeveledCompactionStrategy strategy = (LeveledCompactionStrategy) cfs.getCompactionStrategy();
// L0 is the lowest priority, so when that's done, we know everything is done
while (strategy.getLevelSize(0) > 1)
Thread.sleep(100);
}
@Test
public void testCompactionProgress() throws Exception
{
String ksname = "Keyspace1";
String cfname = "StandardLeveled";
Keyspace keyspace = Keyspace.open(ksname);
ColumnFamilyStore cfs = keyspace.getColumnFamilyStore(cfname);
// make sure we have SSTables in L1
byte [] b = new byte[100 * 1024];
new Random().nextBytes(b);
ByteBuffer value = ByteBuffer.wrap(b);
int rows = 2;
int columns = 10;
for (int r = 0; r < rows; r++)
{
DecoratedKey key = Util.dk(String.valueOf(r));
RowMutation rm = new RowMutation(ksname, key.key);
for (int c = 0; c < columns; c++)
{
rm.add(cfname, ByteBufferUtil.bytes("column" + c), value, 0);
}
rm.apply();
cfs.forceBlockingFlush();
}
waitForLeveling(cfs);
LeveledCompactionStrategy strategy = (LeveledCompactionStrategy) cfs.getCompactionStrategy();
assert strategy.getLevelSize(1) > 0;
// get LeveledScanner for level 1 sstables
Collection<SSTableReader> sstables = strategy.manifest.getLevel(1);
List<ICompactionScanner> scanners = strategy.getScanners(sstables);
assertEquals(1, scanners.size()); // should be one per level
ICompactionScanner scanner = scanners.get(0);
// scan through to the end
while (scanner.hasNext())
scanner.next();
// scanner.getCurrentPosition should be equal to total bytes of L1 sstables
assertEquals(scanner.getCurrentPosition(), SSTable.getTotalUncompressedBytes(sstables));
}
@Test
public void testMutateLevel() throws Exception
{
String ksname = "Keyspace1";
String cfname = "StandardLeveled";
Keyspace keyspace = Keyspace.open(ksname);
ColumnFamilyStore cfs = keyspace.getColumnFamilyStore(cfname);
ByteBuffer value = ByteBuffer.wrap(new byte[100 * 1024]); // 100 KB value, make it easy to have multiple files
// Enough data to have a level 1 and 2
int rows = 20;
int columns = 10;
// Adds enough data to trigger multiple sstable per level
for (int r = 0; r < rows; r++)
{
DecoratedKey key = Util.dk(String.valueOf(r));
RowMutation rm = new RowMutation(ksname, key.key);
for (int c = 0; c < columns; c++)
{
rm.add(cfname, ByteBufferUtil.bytes("column" + c), value, 0);
}
rm.apply();
cfs.forceBlockingFlush();
}
waitForLeveling(cfs);
cfs.forceBlockingFlush();
LeveledCompactionStrategy strategy = (LeveledCompactionStrategy) cfs.getCompactionStrategy();
cfs.disableAutoCompaction();
while(CompactionManager.instance.isCompacting(Arrays.asList(cfs)))
Thread.sleep(100);
for (SSTableReader s : cfs.getSSTables())
{
assertTrue(s.getSSTableLevel() != 6);
strategy.manifest.remove(s);
LeveledManifest.mutateLevel(Pair.create(s.getSSTableMetadata(), s.getAncestors()), s.descriptor, s.descriptor.filenameFor(Component.STATS), 6);
s.reloadSSTableMetadata();
strategy.manifest.add(s);
}
// verify that all sstables in the changed set is level 6
for (SSTableReader s : cfs.getSSTables())
assertEquals(6, s.getSSTableLevel());
int[] levels = strategy.manifest.getAllLevelSize();
// verify that the manifest has correct amount of sstables
assertEquals(cfs.getSSTables().size(), levels[6]);
}
}