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*
* http://www.apache.org/licenses/LICENSE-2.0
*
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package org.apache.cassandra.cql3;
import junit.framework.Assert;
import org.apache.cassandra.db.ColumnFamilyStore;
import org.apache.cassandra.db.Keyspace;
import org.junit.Test;
public class CrcCheckChanceTest extends CQLTester
{
@Test
public void testChangingCrcCheckChance() throws Throwable
{
//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}");
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.getIndexesBackedByCfs().iterator().next();
cfs.forceBlockingFlush();
Assert.assertEquals(0.99, cfs.metadata.compressionParameters.getCrcCheckChance());
Assert.assertEquals(0.99, cfs.getSSTables().iterator().next().getCompressionMetadata().parameters.getCrcCheckChance());
Assert.assertEquals(0.99, indexCfs.metadata.compressionParameters.getCrcCheckChance());
Assert.assertEquals(0.99, indexCfs.getSSTables().iterator().next().getCompressionMetadata().parameters.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")
);
//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();
//Verify when we alter the value the live sstable readers hold the new one
alterTable("ALTER TABLE %s WITH compression = {'sstable_compression': 'LZ4Compressor', 'crc_check_chance': 0.01}");
Assert.assertEquals( 0.01, cfs.metadata.compressionParameters.getCrcCheckChance());
Assert.assertEquals( 0.01, cfs.getSSTables().iterator().next().getCompressionMetadata().parameters.getCrcCheckChance());
Assert.assertEquals( 0.01, indexCfs.metadata.compressionParameters.getCrcCheckChance());
Assert.assertEquals( 0.01, indexCfs.getSSTables().iterator().next().getCompressionMetadata().parameters.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")
);
//Verify the call used by JMX still works
cfs.setCrcCheckChance(0.03);
Assert.assertEquals( 0.03, cfs.metadata.compressionParameters.getCrcCheckChance());
Assert.assertEquals( 0.03, cfs.getSSTables().iterator().next().getCompressionMetadata().parameters.getCrcCheckChance());
Assert.assertEquals( 0.03, indexCfs.metadata.compressionParameters.getCrcCheckChance());
Assert.assertEquals( 0.03, indexCfs.getSSTables().iterator().next().getCompressionMetadata().parameters.getCrcCheckChance());
}
}