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* to you under the Apache License, Version 2.0 (the
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*
* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing,
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package org.apache.cassandra.db.compaction;
import java.io.*;
import java.nio.ByteBuffer;
import java.util.*;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeUnit;
import org.junit.Test;
import org.apache.cassandra.SchemaLoader;
import org.apache.cassandra.Util;
import org.apache.cassandra.config.DatabaseDescriptor;
import org.apache.cassandra.db.*;
import org.apache.cassandra.db.columniterator.IdentityQueryFilter;
import org.apache.cassandra.db.columniterator.OnDiskAtomIterator;
import org.apache.cassandra.db.filter.QueryFilter;
import org.apache.cassandra.db.filter.QueryPath;
import org.apache.cassandra.io.sstable.Component;
import org.apache.cassandra.io.sstable.SSTableReader;
import org.apache.cassandra.io.sstable.SSTableScanner;
import org.apache.cassandra.io.util.FileUtils;
import org.apache.cassandra.utils.ByteBufferUtil;
import org.apache.cassandra.utils.FBUtilities;
import static junit.framework.Assert.*;
public class CompactionsTest extends SchemaLoader
{
public static final String TABLE1 = "Keyspace1";
@Test
public void testBlacklistingWithSizeTieredCompactionStrategy() throws Exception
{
testBlacklisting(SizeTieredCompactionStrategy.class.getCanonicalName());
}
@Test
public void testBlacklistingWithLeveledCompactionStrategy() throws Exception
{
testBlacklisting(LeveledCompactionStrategy.class.getCanonicalName());
}
public ColumnFamilyStore testSingleSSTableCompaction(String strategyClassName) throws Exception
{
Table table = Table.open(TABLE1);
ColumnFamilyStore store = table.getColumnFamilyStore("Standard1");
store.clearUnsafe();
store.metadata.gcGraceSeconds(1);
store.setCompactionStrategyClass(strategyClassName);
// disable compaction while flushing
store.disableAutoCompaction();
long timestamp = System.currentTimeMillis();
for (int i = 0; i < 10; i++)
{
DecoratedKey key = Util.dk(Integer.toString(i));
RowMutation rm = new RowMutation(TABLE1, key.key);
for (int j = 0; j < 10; j++)
rm.add(new QueryPath("Standard1", null, ByteBufferUtil.bytes(Integer.toString(j))),
ByteBufferUtil.EMPTY_BYTE_BUFFER,
timestamp,
j > 0 ? 3 : 0); // let first column never expire, since deleting all columns does not produce sstable
rm.apply();
}
store.forceBlockingFlush();
assertEquals(1, store.getSSTables().size());
long originalSize = store.getSSTables().iterator().next().uncompressedLength();
// wait enough to force single compaction
TimeUnit.SECONDS.sleep(5);
// enable compaction, submit background and wait for it to complete
store.enableAutoCompaction();
FBUtilities.waitOnFutures(CompactionManager.instance.submitBackground(store));
while (CompactionManager.instance.getPendingTasks() > 0 || CompactionManager.instance.getActiveCompactions() > 0)
TimeUnit.SECONDS.sleep(1);
// and sstable with ttl should be compacted
assertEquals(1, store.getSSTables().size());
long size = store.getSSTables().iterator().next().uncompressedLength();
assertTrue("should be less than " + originalSize + ", but was " + size, size < originalSize);
// make sure max timestamp of compacted sstables is recorded properly after compaction.
assertMaxTimestamp(store, timestamp);
return store;
}
/**
* Test to see if sstable has enough expired columns, it is compacted itself.
*/
@Test
public void testSingleSSTableCompactionWithSizeTieredCompaction() throws Exception
{
testSingleSSTableCompaction(SizeTieredCompactionStrategy.class.getCanonicalName());
}
@Test
public void testSingleSSTableCompactionWithLeveledCompaction() throws Exception
{
ColumnFamilyStore store = testSingleSSTableCompaction(LeveledCompactionStrategy.class.getCanonicalName());
LeveledCompactionStrategy strategy = (LeveledCompactionStrategy) store.getCompactionStrategy();
// tombstone removal compaction should not promote level
assert strategy.getLevelSize(0) == 1;
}
@Test
public void testSuperColumnTombstones() throws IOException, ExecutionException, InterruptedException
{
Table table = Table.open(TABLE1);
ColumnFamilyStore cfs = table.getColumnFamilyStore("Super1");
cfs.disableAutoCompaction();
DecoratedKey key = Util.dk("tskey");
ByteBuffer scName = ByteBufferUtil.bytes("TestSuperColumn");
// a subcolumn
RowMutation rm = new RowMutation(TABLE1, key.key);
rm.add(new QueryPath("Super1", scName, ByteBufferUtil.bytes(0)),
ByteBufferUtil.EMPTY_BYTE_BUFFER,
FBUtilities.timestampMicros());
rm.apply();
cfs.forceBlockingFlush();
// shadow the subcolumn with a supercolumn tombstone
rm = new RowMutation(TABLE1, key.key);
rm.delete(new QueryPath("Super1", scName), FBUtilities.timestampMicros());
rm.apply();
cfs.forceBlockingFlush();
CompactionManager.instance.performMaximal(cfs);
assertEquals(1, cfs.getSSTables().size());
// check that the shadowed column is gone
SSTableReader sstable = cfs.getSSTables().iterator().next();
SSTableScanner scanner = sstable.getScanner(new QueryFilter(null, new QueryPath("Super1", scName), new IdentityQueryFilter()));
scanner.seekTo(key);
OnDiskAtomIterator iter = scanner.next();
assertEquals(key, iter.getKey());
SuperColumn sc = (SuperColumn) iter.next();
assert sc.getSubColumns().isEmpty();
}
public static void assertMaxTimestamp(ColumnFamilyStore cfs, long maxTimestampExpected)
{
long maxTimestampObserved = Long.MIN_VALUE;
for (SSTableReader sstable : cfs.getSSTables())
maxTimestampObserved = Math.max(sstable.getMaxTimestamp(), maxTimestampObserved);
assertEquals(maxTimestampExpected, maxTimestampObserved);
}
@Test
public void testEchoedRow() throws IOException, ExecutionException, InterruptedException
{
// This test check that EchoedRow doesn't skipp rows: see CASSANDRA-2653
Table table = Table.open(TABLE1);
ColumnFamilyStore cfs = table.getColumnFamilyStore("Standard2");
// disable compaction while flushing
cfs.disableAutoCompaction();
// Insert 4 keys in two sstables. We need the sstables to have 2 rows
// at least to trigger what was causing CASSANDRA-2653
for (int i=1; i < 5; i++)
{
DecoratedKey key = Util.dk(String.valueOf(i));
RowMutation rm = new RowMutation(TABLE1, key.key);
rm.add(new QueryPath("Standard2", null, ByteBufferUtil.bytes(String.valueOf(i))), ByteBufferUtil.EMPTY_BYTE_BUFFER, i);
rm.apply();
if (i % 2 == 0)
cfs.forceBlockingFlush();
}
Collection<SSTableReader> toCompact = cfs.getSSTables();
assert toCompact.size() == 2;
// Reinserting the same keys. We will compact only the previous sstable, but we need those new ones
// to make sure we use EchoedRow, otherwise it won't be used because purge can be done.
for (int i=1; i < 5; i++)
{
DecoratedKey key = Util.dk(String.valueOf(i));
RowMutation rm = new RowMutation(TABLE1, key.key);
rm.add(new QueryPath("Standard2", null, ByteBufferUtil.bytes(String.valueOf(i))), ByteBufferUtil.EMPTY_BYTE_BUFFER, i);
rm.apply();
}
cfs.forceBlockingFlush();
SSTableReader tmpSSTable = null;
for (SSTableReader sstable : cfs.getSSTables())
if (!toCompact.contains(sstable))
tmpSSTable = sstable;
assert tmpSSTable != null;
// Force compaction on first sstables. Since each row is in only one sstable, we will be using EchoedRow.
Util.compact(cfs, toCompact);
assertEquals(2, cfs.getSSTables().size());
// Now, we remove the sstable that was just created to force the use of EchoedRow (so that it doesn't hide the problem)
cfs.markCompacted(Collections.singleton(tmpSSTable), OperationType.UNKNOWN);
assertEquals(1, cfs.getSSTables().size());
// Now assert we do have the 4 keys
assertEquals(4, Util.getRangeSlice(cfs).size());
}
@Test
public void testDontPurgeAccidentaly() throws IOException, ExecutionException, InterruptedException
{
// Testing with and without forcing deserialization. Without deserialization, EchoedRow will be used.
testDontPurgeAccidentaly("test1", "Super5", false);
testDontPurgeAccidentaly("test2", "Super5", true);
// Use CF with gc_grace=0, see last bug of CASSANDRA-2786
testDontPurgeAccidentaly("test1", "SuperDirectGC", false);
testDontPurgeAccidentaly("test2", "SuperDirectGC", true);
}
@Test
public void testUserDefinedCompaction() throws Exception
{
Table table = Table.open(TABLE1);
final String cfname = "Standard3"; // use clean(no sstable) CF
ColumnFamilyStore cfs = table.getColumnFamilyStore(cfname);
// disable compaction while flushing
cfs.disableAutoCompaction();
final int ROWS_PER_SSTABLE = 10;
for (int i = 0; i < ROWS_PER_SSTABLE; i++) {
DecoratedKey key = Util.dk(String.valueOf(i));
RowMutation rm = new RowMutation(TABLE1, key.key);
rm.add(new QueryPath(cfname, null, ByteBufferUtil.bytes("col")),
ByteBufferUtil.EMPTY_BYTE_BUFFER,
System.currentTimeMillis());
rm.apply();
}
cfs.forceBlockingFlush();
Collection<SSTableReader> sstables = cfs.getSSTables();
assert sstables.size() == 1;
SSTableReader sstable = sstables.iterator().next();
int prevGeneration = sstable.descriptor.generation;
String file = new File(sstable.descriptor.filenameFor(Component.DATA)).getName();
// submit user defined compaction on flushed sstable
CompactionManager.instance.forceUserDefinedCompaction(TABLE1, file);
// wait until user defined compaction finishes
do
{
Thread.sleep(100);
} while (CompactionManager.instance.getPendingTasks() > 0 || CompactionManager.instance.getActiveCompactions() > 0);
// CF should have only one sstable with generation number advanced
sstables = cfs.getSSTables();
assert sstables.size() == 1;
assert sstables.iterator().next().descriptor.generation == prevGeneration + 1;
}
private void testDontPurgeAccidentaly(String k, String cfname, boolean forceDeserialize) throws IOException, ExecutionException, InterruptedException
{
// This test catches the regression of CASSANDRA-2786
Table table = Table.open(TABLE1);
ColumnFamilyStore cfs = table.getColumnFamilyStore(cfname);
// disable compaction while flushing
cfs.clearUnsafe();
cfs.disableAutoCompaction();
// Add test row
DecoratedKey key = Util.dk(k);
RowMutation rm = new RowMutation(TABLE1, key.key);
rm.add(new QueryPath(cfname, ByteBufferUtil.bytes("sc"), ByteBufferUtil.bytes("c")), ByteBufferUtil.EMPTY_BYTE_BUFFER, 0);
rm.apply();
cfs.forceBlockingFlush();
Collection<SSTableReader> sstablesBefore = cfs.getSSTables();
QueryFilter filter = QueryFilter.getIdentityFilter(key, new QueryPath(cfname, null, null));
assert !cfs.getColumnFamily(filter).isEmpty();
// Remove key
rm = new RowMutation(TABLE1, key.key);
rm.delete(new QueryPath(cfname, null, null), 2);
rm.apply();
ColumnFamily cf = cfs.getColumnFamily(filter);
assert cf == null || cf.isEmpty() : "should be empty: " + cf;
cfs.forceBlockingFlush();
Collection<SSTableReader> sstablesAfter = cfs.getSSTables();
Collection<SSTableReader> toCompact = new ArrayList<SSTableReader>();
for (SSTableReader sstable : sstablesAfter)
if (!sstablesBefore.contains(sstable))
toCompact.add(sstable);
Util.compact(cfs, toCompact);
cf = cfs.getColumnFamily(filter);
assert cf == null || cf.isEmpty() : "should be empty: " + cf;
}
public void testBlacklisting(String compactionStrategy) throws Exception
{
// this test does enough rows to force multiple block indexes to be used
Table table = Table.open(TABLE1);
final ColumnFamilyStore cfs = table.getColumnFamilyStore("Standard1");
final int ROWS_PER_SSTABLE = 10;
final int SSTABLES = DatabaseDescriptor.getIndexInterval() * 2 / ROWS_PER_SSTABLE;
cfs.setCompactionStrategyClass(compactionStrategy);
// disable compaction while flushing
cfs.disableAutoCompaction();
//test index corruption
//now create a few new SSTables
long maxTimestampExpected = Long.MIN_VALUE;
Set<DecoratedKey> inserted = new HashSet<DecoratedKey>();
for (int j = 0; j < SSTABLES; j++)
{
for (int i = 0; i < ROWS_PER_SSTABLE; i++)
{
DecoratedKey key = Util.dk(String.valueOf(i % 2));
RowMutation rm = new RowMutation(TABLE1, key.key);
long timestamp = j * ROWS_PER_SSTABLE + i;
rm.add(new QueryPath("Standard1", null, ByteBufferUtil.bytes(String.valueOf(i / 2))),
ByteBufferUtil.EMPTY_BYTE_BUFFER,
timestamp);
maxTimestampExpected = Math.max(timestamp, maxTimestampExpected);
rm.apply();
inserted.add(key);
}
cfs.forceBlockingFlush();
assertMaxTimestamp(cfs, maxTimestampExpected);
assertEquals(inserted.toString(), inserted.size(), Util.getRangeSlice(cfs).size());
}
Collection<SSTableReader> sstables = cfs.getSSTables();
int currentSSTable = 0;
int sstablesToCorrupt = 8;
// corrupt first 'sstablesToCorrupt' SSTables
for (SSTableReader sstable : sstables)
{
if(currentSSTable + 1 > sstablesToCorrupt)
break;
RandomAccessFile raf = null;
try
{
raf = new RandomAccessFile(sstable.getFilename(), "rw");
assertNotNull(raf);
raf.write(0xFFFFFF);
}
finally
{
FileUtils.closeQuietly(raf);
}
currentSSTable++;
}
int failures = 0;
// close error output steam to avoid printing ton of useless RuntimeException
System.err.close();
try
{
// in case something will go wrong we don't want to loop forever using for (;;)
for (int i = 0; i < sstables.size(); i++)
{
try
{
cfs.forceMajorCompaction();
}
catch (Exception e)
{
failures++;
continue;
}
assertEquals(sstablesToCorrupt + 1, cfs.getSSTables().size());
break;
}
}
finally
{
System.setErr(new PrintStream(new ByteArrayOutputStream()));
}
cfs.truncate();
assertEquals(failures, sstablesToCorrupt);
}
}