package org.apache.cassandra.db;
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* "License"); you may not use this file except in compliance
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import java.util.UUID;
import java.util.concurrent.TimeUnit;
import org.junit.Test;
import org.apache.cassandra.SchemaLoader;
import org.apache.cassandra.db.ColumnFamilyStore;
import org.apache.cassandra.db.HintedHandOffManager;
import org.apache.cassandra.db.RowMutation;
import org.apache.cassandra.db.Table;
import org.apache.cassandra.db.compaction.CompactionManager;
import org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy;
import org.apache.cassandra.db.filter.QueryPath;
import org.apache.cassandra.dht.IPartitioner;
import org.apache.cassandra.service.StorageService;
import org.apache.cassandra.utils.ByteBufferUtil;
import org.apache.cassandra.utils.FBUtilities;
import static junit.framework.Assert.assertEquals;
public class HintedHandOffTest extends SchemaLoader
{
public static final String TABLE4 = "Keyspace4";
public static final String STANDARD1_CF = "Standard1";
public static final String COLUMN1 = "column1";
// Test compaction of hints column family. It shouldn't remove all columns on compaction.
@Test
public void testCompactionOfHintsCF() throws Exception
{
// prepare hints column family
Table systemTable = Table.open("system");
ColumnFamilyStore hintStore = systemTable.getColumnFamilyStore(HintedHandOffManager.HINTS_CF);
hintStore.clearUnsafe();
hintStore.metadata.gcGraceSeconds(36000); // 10 hours
hintStore.setCompactionStrategyClass(SizeTieredCompactionStrategy.class.getCanonicalName());
hintStore.disableAutoCompaction();
// insert 1 hint
RowMutation rm = new RowMutation(TABLE4, ByteBufferUtil.bytes(1));
rm.add(new QueryPath(STANDARD1_CF,
null,
ByteBufferUtil.bytes(String.valueOf(COLUMN1))),
ByteBufferUtil.EMPTY_BYTE_BUFFER,
System.currentTimeMillis());
RowMutation.hintFor(rm, ByteBufferUtil.bytes("foo")).apply();
// flush data to disk
hintStore.forceBlockingFlush();
assertEquals(1, hintStore.getSSTables().size());
// submit compaction
FBUtilities.waitOnFuture(HintedHandOffManager.instance.compact());
while (CompactionManager.instance.getPendingTasks() > 0 || CompactionManager.instance.getActiveCompactions() > 0)
TimeUnit.SECONDS.sleep(1);
// single row should not be removed because of gc_grace_seconds
// is 10 hours and there are no any tombstones in sstable
assertEquals(1, hintStore.getSSTables().size());
}
}