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package org.apache.cassandra.cql3.validation.miscellaneous;
import java.util.List;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future;
import org.junit.Test;
import junit.framework.Assert;
import org.apache.cassandra.config.DatabaseDescriptor;
import org.apache.cassandra.cql3.CQLTester;
import org.apache.cassandra.db.ColumnFamilyStore;
import org.apache.cassandra.db.Keyspace;
import org.apache.cassandra.db.compaction.CompactionInterruptedException;
import org.apache.cassandra.db.compaction.CompactionManager;
import org.apache.cassandra.io.sstable.format.SSTableReader;
import org.apache.cassandra.io.util.RandomAccessReader;
import org.apache.cassandra.utils.FBUtilities;
public class CrcCheckChanceTest extends CQLTester
{
@Test
public void testChangingCrcCheckChanceNewFormat() throws Throwable
{
testChangingCrcCheckChance(true);
}
@Test
public void testChangingCrcCheckChanceOldFormat() throws Throwable
{
testChangingCrcCheckChance(false);
}
public void testChangingCrcCheckChance(boolean newFormat) throws Throwable
{
//Start with crc_check_chance of 99%
if (newFormat)
createTable("CREATE TABLE %s (p text, c text, v text, s text static, PRIMARY KEY (p, c)) WITH compression = {'sstable_compression': 'LZ4Compressor'} AND crc_check_chance = 0.99;");
else
createTable("CREATE TABLE %s (p text, c text, v text, s text static, PRIMARY KEY (p, c)) WITH compression = {'sstable_compression': 'LZ4Compressor', 'crc_check_chance' : 0.99}");
execute("CREATE INDEX foo ON %s(v)");
execute("INSERT INTO %s(p, c, v, s) values (?, ?, ?, ?)", "p1", "k1", "v1", "sv1");
execute("INSERT INTO %s(p, c, v) values (?, ?, ?)", "p1", "k2", "v2");
execute("INSERT INTO %s(p, s) values (?, ?)", "p2", "sv2");
ColumnFamilyStore cfs = Keyspace.open(CQLTester.KEYSPACE).getColumnFamilyStore(currentTable());
ColumnFamilyStore indexCfs = cfs.indexManager.getAllIndexColumnFamilyStores().iterator().next();
cfs.forceBlockingFlush();
Assert.assertEquals(0.99, cfs.getCrcCheckChance());
Assert.assertEquals(0.99, cfs.getLiveSSTables().iterator().next().getCrcCheckChance());
Assert.assertEquals(0.99, indexCfs.getCrcCheckChance());
Assert.assertEquals(0.99, indexCfs.getLiveSSTables().iterator().next().getCrcCheckChance());
//Test for stack overflow
if (newFormat)
alterTable("ALTER TABLE %s WITH crc_check_chance = 0.99");
else
alterTable("ALTER TABLE %s WITH compression = {'sstable_compression': 'LZ4Compressor', 'crc_check_chance': 0.99}");
assertRows(execute("SELECT * FROM %s WHERE p=?", "p1"),
row("p1", "k1", "sv1", "v1"),
row("p1", "k2", "sv1", "v2")
);
assertRows(execute("SELECT * FROM %s WHERE v=?", "v1"),
row("p1", "k1", "sv1", "v1")
);
//Write a few SSTables then Compact
execute("INSERT INTO %s(p, c, v, s) values (?, ?, ?, ?)", "p1", "k1", "v1", "sv1");
execute("INSERT INTO %s(p, c, v) values (?, ?, ?)", "p1", "k2", "v2");
execute("INSERT INTO %s(p, s) values (?, ?)", "p2", "sv2");
cfs.forceBlockingFlush();
execute("INSERT INTO %s(p, c, v, s) values (?, ?, ?, ?)", "p1", "k1", "v1", "sv1");
execute("INSERT INTO %s(p, c, v) values (?, ?, ?)", "p1", "k2", "v2");
execute("INSERT INTO %s(p, s) values (?, ?)", "p2", "sv2");
cfs.forceBlockingFlush();
execute("INSERT INTO %s(p, c, v, s) values (?, ?, ?, ?)", "p1", "k1", "v1", "sv1");
execute("INSERT INTO %s(p, c, v) values (?, ?, ?)", "p1", "k2", "v2");
execute("INSERT INTO %s(p, s) values (?, ?)", "p2", "sv2");
cfs.forceBlockingFlush();
cfs.forceMajorCompaction();
//Now let's change via JMX
cfs.setCrcCheckChance(0.01);
Assert.assertEquals(0.01, cfs.getCrcCheckChance());
Assert.assertEquals(0.01, cfs.getLiveSSTables().iterator().next().getCrcCheckChance());
Assert.assertEquals(0.01, indexCfs.getCrcCheckChance());
Assert.assertEquals(0.01, indexCfs.getLiveSSTables().iterator().next().getCrcCheckChance());
assertRows(execute("SELECT * FROM %s WHERE p=?", "p1"),
row("p1", "k1", "sv1", "v1"),
row("p1", "k2", "sv1", "v2")
);
assertRows(execute("SELECT * FROM %s WHERE v=?", "v1"),
row("p1", "k1", "sv1", "v1")
);
//Alter again via schema
if (newFormat)
alterTable("ALTER TABLE %s WITH crc_check_chance = 0.5");
else
alterTable("ALTER TABLE %s WITH compression = {'sstable_compression': 'LZ4Compressor', 'crc_check_chance': 0.5}");
//We should be able to get the new value by accessing directly the schema metadata
Assert.assertEquals(0.5, cfs.metadata().params.crcCheckChance);
//but previous JMX-set value will persist until next restart
Assert.assertEquals(0.01, cfs.getLiveSSTables().iterator().next().getCrcCheckChance());
Assert.assertEquals(0.01, indexCfs.getCrcCheckChance());
Assert.assertEquals(0.01, indexCfs.getLiveSSTables().iterator().next().getCrcCheckChance());
//Verify the call used by JMX still works
cfs.setCrcCheckChance(0.03);
Assert.assertEquals(0.03, cfs.getCrcCheckChance());
Assert.assertEquals(0.03, cfs.getLiveSSTables().iterator().next().getCrcCheckChance());
Assert.assertEquals(0.03, indexCfs.getCrcCheckChance());
Assert.assertEquals(0.03, indexCfs.getLiveSSTables().iterator().next().getCrcCheckChance());
// Also check that any open readers also use the updated value
// note: only compressed files currently perform crc checks, so only the dfile reader is relevant here
SSTableReader baseSSTable = cfs.getLiveSSTables().iterator().next();
SSTableReader idxSSTable = indexCfs.getLiveSSTables().iterator().next();
try (RandomAccessReader baseDataReader = baseSSTable.openDataReader();
RandomAccessReader idxDataReader = idxSSTable.openDataReader())
{
Assert.assertEquals(0.03, baseDataReader.getCrcCheckChance());
Assert.assertEquals(0.03, idxDataReader.getCrcCheckChance());
cfs.setCrcCheckChance(0.31);
Assert.assertEquals(0.31, baseDataReader.getCrcCheckChance());
Assert.assertEquals(0.31, idxDataReader.getCrcCheckChance());
}
}
@Test
public void testDropDuringCompaction() throws Throwable
{
CompactionManager.instance.disableAutoCompaction();
//Start with crc_check_chance of 99%
createTable("CREATE TABLE %s (p text, c text, v text, s text static, PRIMARY KEY (p, c)) WITH compression = {'sstable_compression': 'LZ4Compressor', 'crc_check_chance' : 0.99}");
ColumnFamilyStore cfs = Keyspace.open(CQLTester.KEYSPACE).getColumnFamilyStore(currentTable());
//Write a few SSTables then Compact, and drop
for (int i = 0; i < 100; i++)
{
execute("INSERT INTO %s(p, c, v, s) values (?, ?, ?, ?)", "p1", "k1", "v1", "sv1");
execute("INSERT INTO %s(p, c, v) values (?, ?, ?)", "p1", "k2", "v2");
execute("INSERT INTO %s(p, s) values (?, ?)", "p2", "sv2");
cfs.forceBlockingFlush();
}
DatabaseDescriptor.setCompactionThroughputMbPerSec(1);
List<Future<?>> futures = CompactionManager.instance.submitMaximal(cfs, CompactionManager.getDefaultGcBefore(cfs, FBUtilities.nowInSeconds()), false);
execute("DROP TABLE %s");
try
{
FBUtilities.waitOnFutures(futures);
}
catch (Throwable t)
{
if (!(t.getCause() instanceof ExecutionException) || !(t.getCause().getCause() instanceof CompactionInterruptedException))
throw t;
}
}
}