/*
 * 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.io.sstable;


import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.UUID;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.function.BiConsumer;
import java.util.function.BiPredicate;
import java.util.function.Function;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import java.util.stream.StreamSupport;

import com.datastax.driver.core.utils.UUIDs;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;

import org.junit.Before;
import org.junit.Ignore;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.TemporaryFolder;

import org.apache.cassandra.Util;
import org.apache.cassandra.cql3.CQL3Type;
import org.apache.cassandra.cql3.QueryProcessor;
import org.apache.cassandra.cql3.UntypedResultSet;
import org.apache.cassandra.cql3.constraints.ConstraintViolationException;
import org.apache.cassandra.cql3.functions.types.DataType;
import org.apache.cassandra.cql3.functions.types.LocalDate;
import org.apache.cassandra.cql3.functions.types.TypeCodec;
import org.apache.cassandra.cql3.functions.types.UDTValue;
import org.apache.cassandra.cql3.functions.types.UserType;
import org.apache.cassandra.db.compression.CompressionDictionary;
import org.apache.cassandra.db.compression.CompressionDictionary.DictId;
import org.apache.cassandra.db.compression.ZstdCompressionDictionary;
import org.apache.cassandra.db.marshal.AbstractType;
import org.apache.cassandra.db.marshal.FloatType;
import org.apache.cassandra.db.marshal.SimpleDateType;
import org.apache.cassandra.db.marshal.TimeType;
import org.apache.cassandra.db.marshal.UTF8Type;
import org.apache.cassandra.dht.ByteOrderedPartitioner;
import org.apache.cassandra.dht.Murmur3Partitioner;
import org.apache.cassandra.dht.Range;
import org.apache.cassandra.dht.Token;
import org.apache.cassandra.exceptions.InvalidRequestException;
import org.apache.cassandra.index.sai.disk.format.IndexDescriptor;
import org.apache.cassandra.index.sai.utils.IndexIdentifier;
import org.apache.cassandra.io.sstable.format.SSTableFormat;
import org.apache.cassandra.io.sstable.format.SSTableReader;
import org.apache.cassandra.io.sstable.format.big.BigFormat;
import org.apache.cassandra.io.sstable.format.bti.BtiFormat;
import org.apache.cassandra.io.util.File;
import org.apache.cassandra.io.util.PathUtils;
import org.apache.cassandra.locator.RangesAtEndpoint;
import org.apache.cassandra.schema.KeyspaceMetadata;
import org.apache.cassandra.schema.Schema;
import org.apache.cassandra.schema.TableMetadata;
import org.apache.cassandra.schema.TableMetadataRef;
import org.apache.cassandra.tcm.ClusterMetadata;
import org.apache.cassandra.transport.ProtocolVersion;
import org.apache.cassandra.utils.ByteBufferUtil;
import org.apache.cassandra.utils.CompressionDictionaryHelper;
import org.apache.cassandra.utils.FBUtilities;
import org.apache.cassandra.utils.JavaDriverUtils;
import org.apache.cassandra.utils.OutputHandler;

import static org.apache.cassandra.db.compression.CompressionDictionary.Kind.ZSTD;
import static org.apache.cassandra.utils.Clock.Global.currentTimeMillis;
import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatThrownBy;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;

@Ignore
public abstract class CQLSSTableWriterTest
{
    private static final AtomicInteger idGen = new AtomicInteger(0);
    private static final int NUMBER_WRITES_IN_RUNNABLE = 10;

    private String keyspace;
    private String table;
    private String qualifiedTable;
    private File dataDir;
    protected boolean verifyDataAfterLoading = true;

    @Rule
    public TemporaryFolder tempFolder = new TemporaryFolder();

    @Before
    public void perTestSetup() throws IOException
    {
        keyspace = "cql_keyspace" + idGen.incrementAndGet();
        table = "table" + idGen.incrementAndGet();
        qualifiedTable = keyspace + '.' + table;
        dataDir = new File(tempFolder.newFolder().getAbsolutePath() + File.pathSeparator() + keyspace + File.pathSeparator() + table);
        assert dataDir.tryCreateDirectories();
    }

    @Test
    public void testUnsortedWriterBig() throws Exception
    {
        BigFormat format = BigFormat.getInstance();
        testWritingSstableWithFormat(format);
    }

    @Test
    public void testUnsortedWriterBti() throws Exception
    {
        SSTableFormat<?, ?> btiFormat = new BtiFormat.BtiFormatFactory().getInstance(Collections.emptyMap());
        testWritingSstableWithFormat(btiFormat);
    }

    private void testWritingSstableWithFormat(SSTableFormat<?, ?> format) throws Exception
    {
        try (AutoCloseable ignored = Util.switchPartitioner(ByteOrderedPartitioner.instance))
        {
            String schema = "CREATE TABLE " + qualifiedTable + " ("
                            + "  k int PRIMARY KEY,"
                            + "  v1 text,"
                            + "  v2 int"
                            + ")";
            String insert = "INSERT INTO " + qualifiedTable + " (k, v1, v2) VALUES (?, ?, ?)";
            CQLSSTableWriter writer = CQLSSTableWriter.builder()
                                                      .inDirectory(dataDir)
                                                      .forTable(schema)
                                                      .withFormat(format)
                                                      .using(insert).build();

            writer.addRow(0, "test1", 24);
            writer.addRow(1, "test2", 44);
            writer.addRow(2, "test3", 42);
            writer.addRow(ImmutableMap.<String, Object>of("k", 3, "v2", 12));

            writer.close();

            validateFilesAreInFormat(format);
            loadSSTables(dataDir, keyspace, table);

            if (verifyDataAfterLoading)
            {
                UntypedResultSet rs = QueryProcessor.executeInternal("SELECT * FROM " + qualifiedTable);
                assertEquals(4, rs.size());

                Iterator<UntypedResultSet.Row> iter = rs.iterator();
                UntypedResultSet.Row row;

                row = iter.next();
                assertEquals(0, row.getInt("k"));
                assertEquals("test1", row.getString("v1"));
                assertEquals(24, row.getInt("v2"));

                row = iter.next();
                assertEquals(1, row.getInt("k"));
                assertEquals("test2", row.getString("v1"));
                assertEquals(44, row.getInt("v2"));

                row = iter.next();
                assertEquals(2, row.getInt("k"));
                assertEquals("test3", row.getString("v1"));
                assertEquals(42, row.getInt("v2"));

                row = iter.next();
                assertEquals(3, row.getInt("k"));
                assertFalse(row.has("v1"));
                assertEquals(12, row.getInt("v2"));
            }
        }
    }

    @Test
    public void testCompressedWriteAndReadBack() throws Exception
    {
        String schema = "CREATE TABLE " + qualifiedTable + " ("
                        + "  k int PRIMARY KEY,"
                        + "  v text"
                        + ") WITH compression = {'enabled':'true', 'class':'LZ4Compressor'}";
        String insert = "INSERT INTO " + qualifiedTable + " (k, v) VALUES (?, ?)";

        try (CQLSSTableWriter writer = CQLSSTableWriter.builder()
                                                       .inDirectory(dataDir)
                                                       .forTable(schema)
                                                       .using(insert)
                                                       .build())
        {
            for (int i = 0; i < 50; i++)
                writer.addRow(i, "row-" + i);
        }

        loadSSTables(dataDir, keyspace, table);

        if (verifyDataAfterLoading)
        {
            UntypedResultSet rs = QueryProcessor.executeInternal("SELECT k, v FROM " + qualifiedTable);
            assertEquals(50, rs.size());

            Set<Integer> seen = new HashSet<>();
            for (UntypedResultSet.Row row : rs)
            {
                int k = row.getInt("k");
                assertTrue("duplicate key " + k, seen.add(k));
                assertEquals("row-" + k, row.getString("v"));
            }
        }
    }

    private void validateFilesAreInFormat(SSTableFormat<?, ?> format) throws IOException
    {
        try (Stream<Path> dataFilePaths = Files.list(dataDir.toPath()).filter(p -> p.toString().endsWith("Data.db")))
        {
            dataFilePaths.forEach(dataFilePath -> {
                File dataFile = new File(dataFilePath.toFile());
                Descriptor descriptor = Descriptor.fromFile(dataFile);
                assertEquals(format, descriptor.version.format);
            });
        }
    }

    @Test
    public void testForbidCounterUpdates() throws Exception
    {
        String schema = "CREATE TABLE " + qualifiedTable + " (" +
                        "  my_id int, " +
                        "  my_counter counter, " +
                        "  PRIMARY KEY (my_id)" +
                        ")";
        String insert = String.format("UPDATE " + qualifiedTable + " SET my_counter = my_counter - ? WHERE my_id = ?");
        try
        {
            CQLSSTableWriter.builder().inDirectory(dataDir)
                            .forTable(schema)
                            .withPartitioner(Murmur3Partitioner.instance)
                            .using(insert).build();
            fail("Counter update statements should not be supported");
        }
        catch (IllegalArgumentException e)
        {
            assertEquals(e.getMessage(), "Counter modification statements are not supported");
        }
    }

    @Test
    public void testSyncWithinPartition() throws Exception
    {
        // Check that the write respect the buffer size even if we only insert rows withing the same partition (#7360)
        // To do that simply, we use a writer with a buffer of 1MiB, and write 2 rows in the same partition with a value
        // > 1MiB and validate that this created more than 1 sstable.
        String schema = "CREATE TABLE " + qualifiedTable + " ("
                        + "  k int PRIMARY KEY,"
                        + "  v blob"
                        + ")";
        String insert = "INSERT INTO " + qualifiedTable + " (k, v) VALUES (?, ?)";
        CQLSSTableWriter writer = CQLSSTableWriter.builder()
                                                  .inDirectory(dataDir)
                                                  .using(insert)
                                                  .forTable(schema)
                                                  .withBufferSizeInMB(1)
                                                  .build();

        ByteBuffer val = ByteBuffer.allocate(1024 * 1050);

        writer.addRow(0, val);
        writer.addRow(1, val);
        writer.close();

        BiPredicate<File, String> filterDataFiles = (dir, name) -> name.endsWith("-Data.db");
        assert dataDir.tryListNames(filterDataFiles).length > 1 : Arrays.toString(dataDir.tryListNames(filterDataFiles));
    }


    @Test
    public void testSyncNoEmptyRows() throws Exception
    {
        // Check that the write does not throw an empty partition error (#9071)
        String schema = "CREATE TABLE " + qualifiedTable + " ("
                        + "  k UUID,"
                        + "  c int,"
                        + "  PRIMARY KEY (k)"
                        + ")";
        String insert = "INSERT INTO " + qualifiedTable + " (k, c) VALUES (?, ?)";
        CQLSSTableWriter writer = CQLSSTableWriter.builder()
                                                  .inDirectory(dataDir)
                                                  .forTable(schema)
                                                  .using(insert)
                                                  .withBufferSizeInMB(1)
                                                  .build();

        for (int i = 0; i < 50000; i++)
        {
            writer.addRow(UUID.randomUUID(), 0);
        }
        writer.close();
    }

    @Test
    public void testDeleteStatement() throws Exception
    {

        final String schema = "CREATE TABLE " + qualifiedTable + " ("
                              + "  k int,"
                              + "  c1 int,"
                              + "  c2 int,"
                              + "  v text,"
                              + "  PRIMARY KEY (k, c1, c2)"
                              + ")";

        testUpdateStatement(); // start by adding some data

        if (verifyDataAfterLoading)
        {
            UntypedResultSet resultSet = QueryProcessor.executeInternal("SELECT * FROM " + qualifiedTable);
            assertEquals(2, resultSet.size());
        }

        CQLSSTableWriter writer = CQLSSTableWriter.builder()
                                                  .inDirectory(dataDir)
                                                  .forTable(schema)
                                                  .using("DELETE FROM " + qualifiedTable +
                                                         " WHERE k = ? AND c1 = ? AND c2 = ?")
                                                  .build();

        writer.addRow(1, 2, 3);
        writer.addRow(4, 5, 6);
        writer.close();
        loadSSTables(dataDir, keyspace, table);

        if (verifyDataAfterLoading)
        {
            UntypedResultSet resultSet = QueryProcessor.executeInternal("SELECT * FROM " + qualifiedTable);
            assertEquals(0, resultSet.size());
            Iterator<UntypedResultSet.Row> iter = resultSet.iterator();
            assertFalse(iter.hasNext());
        }
    }

    @Test
    public void testDeletePartition() throws Exception
    {

        final String schema = "CREATE TABLE " + qualifiedTable + " ("
                              + "  k int,"
                              + "  c1 int,"
                              + "  c2 int,"
                              + "  v text,"
                              + "  PRIMARY KEY (k, c1, c2)"
                              + ")";

        // First, write some rows
        CQLSSTableWriter writer = CQLSSTableWriter.builder()
                                                  .inDirectory(dataDir)
                                                  .forTable(schema)
                                                  .using("INSERT INTO " + qualifiedTable + " (k, c1, c2, v) " +
                                                         "VALUES (?, ?, ?, ?)")
                                                  .build();

        writer.addRow(1, 2, 3, "a");
        writer.addRow(1, 4, 5, "b");
        writer.addRow(1, 6, 7, "c");
        writer.addRow(2, 8, 9, "d");

        writer.close();
        loadSSTables(dataDir, keyspace, table);

        if (verifyDataAfterLoading)
        {
            UntypedResultSet resultSet = QueryProcessor.executeInternal("SELECT * FROM " + qualifiedTable);
            assertEquals(4, resultSet.size());
            Iterator<UntypedResultSet.Row> iter = resultSet.iterator();
            UntypedResultSet.Row r1 = iter.next();
            assertEquals(1, r1.getInt("k"));
            assertEquals(2, r1.getInt("c1"));
            assertEquals(3, r1.getInt("c2"));
            assertEquals("a", r1.getString("v"));
            UntypedResultSet.Row r2 = iter.next();
            assertEquals(1, r2.getInt("k"));
            assertEquals(4, r2.getInt("c1"));
            assertEquals(5, r2.getInt("c2"));
            assertEquals("b", r2.getString("v"));
            UntypedResultSet.Row r3 = iter.next();
            assertEquals(1, r3.getInt("k"));
            assertEquals(6, r3.getInt("c1"));
            assertEquals(7, r3.getInt("c2"));
            assertEquals("c", r3.getString("v"));
            UntypedResultSet.Row r4 = iter.next();
            assertEquals(2, r4.getInt("k"));
            assertEquals(8, r4.getInt("c1"));
            assertEquals(9, r4.getInt("c2"));
            assertEquals("d", r4.getString("v"));
            assertFalse(iter.hasNext());
        }

        writer = CQLSSTableWriter.builder()
                                 .inDirectory(dataDir)
                                 .forTable(schema)
                                 .using("DELETE FROM " + qualifiedTable +
                                        " WHERE k = ?")
                                 .build();

        writer.addRow(1);
        writer.close();
        loadSSTables(dataDir, keyspace, table);

        if (verifyDataAfterLoading)
        {

            UntypedResultSet resultSet = QueryProcessor.executeInternal("SELECT * FROM " + qualifiedTable);
            assertEquals(1, resultSet.size());
            Iterator<UntypedResultSet.Row> iter = resultSet.iterator();
            UntypedResultSet.Row r5 = iter.next();
            assertEquals(2, r5.getInt("k"));
            assertEquals(8, r5.getInt("c1"));
            assertEquals(9, r5.getInt("c2"));
            assertEquals("d", r5.getString("v"));
            assertFalse(iter.hasNext());
        }
    }

    @Test
    public void testDeleteRange() throws Exception
    {

        final String schema = "CREATE TABLE " + qualifiedTable + " ("
                              + "  k text,"
                              + "  c1 int,"
                              + "  c2 int,"
                              + "  v text,"
                              + "  PRIMARY KEY (k, c1, c2)"
                              + ")";

        CQLSSTableWriter updateWriter = CQLSSTableWriter.builder()
                                                        .inDirectory(dataDir)
                                                        .forTable(schema)
                                                        .using(String.format("UPDATE %s SET v=? WHERE k=? AND c1=? AND c2=?", qualifiedTable))
                                                        .build();
        CQLSSTableWriter deleteWriter = CQLSSTableWriter.builder()
                                                        .inDirectory(dataDir)
                                                        .forTable(schema)
                                                        .using(String.format("DELETE FROM %s WHERE k=? AND c1=? and c2>=?", qualifiedTable))
                                                        .build();

        if (verifyDataAfterLoading)
        {
            updateWriter.addRow("v0.0", "a", 0, 0);
            updateWriter.addRow("v0.1", "a", 0, 1);
            updateWriter.addRow("v0.2", "a", 0, 2);
            updateWriter.addRow("v0.0", "b", 0, 0);
            updateWriter.addRow("v0.1", "b", 0, 1);
            updateWriter.addRow("v0.2", "b", 0, 2);
            updateWriter.close();
            deleteWriter.addRow("a", 0, 1);
            deleteWriter.addRow("b", 0, 2);
        }

        deleteWriter.close();
        loadSSTables(dataDir, keyspace, table);

        if (verifyDataAfterLoading)
        {
            UntypedResultSet resultSet = QueryProcessor.executeInternal("SELECT * FROM " + qualifiedTable);
            assertEquals(3, resultSet.size());

            Iterator<UntypedResultSet.Row> iter = resultSet.iterator();
            UntypedResultSet.Row r1 = iter.next();
            assertEquals("a", r1.getString("k"));
            assertEquals(0, r1.getInt("c1"));
            assertEquals(0, r1.getInt("c2"));
            UntypedResultSet.Row r2 = iter.next();
            assertEquals("b", r2.getString("k"));
            assertEquals(0, r2.getInt("c1"));
            assertEquals(0, r2.getInt("c2"));
            UntypedResultSet.Row r3 = iter.next();
            assertEquals("b", r3.getString("k"));
            assertEquals(0, r3.getInt("c1"));
            assertEquals(1, r3.getInt("c2"));
        }
    }

    @Test
    public void testDeleteRangeEmptyKeyComponent() throws Exception
    {
        final String schema = "CREATE TABLE " + qualifiedTable + " ("
                              + "  k text,"
                              + "  c1 int,"
                              + "  c2 int,"
                              + "  v text,"
                              + "  PRIMARY KEY (k, c1, c2)"
                              + ")";

        CQLSSTableWriter updateWriter = CQLSSTableWriter.builder()
                                                        .inDirectory(dataDir)
                                                        .forTable(schema)
                                                        .using(String.format("UPDATE %s SET v=? WHERE k=? AND c1=? AND c2=?", qualifiedTable))
                                                        .build();
        CQLSSTableWriter deleteWriter = CQLSSTableWriter.builder()
                                                        .inDirectory(dataDir)
                                                        .forTable(schema)
                                                        .using(String.format("DELETE FROM %s WHERE k=? AND c1=?", qualifiedTable))
                                                        .build();

        updateWriter.addRow("v0.0", "a", 0, 0);
        updateWriter.addRow("v0.1", "a", 0, 1);
        updateWriter.addRow("v0.2", "a", 1, 2);
        updateWriter.addRow("v0.0", "b", 0, 0);
        updateWriter.addRow("v0.1", "b", 0, 1);
        updateWriter.addRow("v0.2", "b", 1, 2);
        updateWriter.close();
        deleteWriter.addRow("a", 0);
        deleteWriter.addRow("b", 0);
        deleteWriter.close();
        loadSSTables(dataDir, keyspace, table);

        if (verifyDataAfterLoading)
        {
            UntypedResultSet resultSet = QueryProcessor.executeInternal("SELECT * FROM " + qualifiedTable);
            assertEquals(2, resultSet.size());

            Iterator<UntypedResultSet.Row> iter = resultSet.iterator();
            UntypedResultSet.Row r1 = iter.next();
            assertEquals("a", r1.getString("k"));
            assertEquals(1, r1.getInt("c1"));
            assertEquals(2, r1.getInt("c2"));
            UntypedResultSet.Row r2 = iter.next();
            assertEquals("b", r2.getString("k"));
            assertEquals(1, r2.getInt("c1"));
            assertEquals(2, r2.getInt("c2"));
        }
    }

    @Test
    public void testDeleteValue() throws Exception
    {
        final String schema = "CREATE TABLE " + qualifiedTable + " ("
                              + "  k text,"
                              + "  c1 int,"
                              + "  c2 int,"
                              + "  v text,"
                              + "  PRIMARY KEY (k, c1, c2)"
                              + ")";

        CQLSSTableWriter insertWriter = CQLSSTableWriter.builder()
                                                        .inDirectory(dataDir)
                                                        .forTable(schema)
                                                        .using(String.format("INSERT INTO %s (v, k, c1, c2) values (?, ?, ?, ?)", qualifiedTable))
                                                        .build();

        // UPDATE does not set the row's liveness information, just the cells'. So when we delete the value from rows
        // added with the updateWriter, the entire row will no longer exist, not just the value.
        CQLSSTableWriter updateWriter = CQLSSTableWriter.builder()
                                                        .inDirectory(dataDir)
                                                        .forTable(schema)
                                                        .using(String.format("UPDATE %s SET v=? WHERE k=? AND c1=? AND c2=?", qualifiedTable))
                                                        .build();

        CQLSSTableWriter deleteWriter = CQLSSTableWriter.builder()
                                                        .inDirectory(dataDir)
                                                        .forTable(schema)
                                                        .using("DELETE v FROM " + qualifiedTable +
                                                               " WHERE k = ? AND c1 = ? AND c2 = ?")
                                                        .build();

        insertWriter.addRow("v0.2", "a", 1, 2);
        insertWriter.close();

        updateWriter.addRow("v0.3", "b", 3, 4);
        updateWriter.close();

        loadSSTables(dataDir, keyspace, table);

        if (verifyDataAfterLoading)
        {
            UntypedResultSet resultSet = QueryProcessor.executeInternal("SELECT * FROM " + qualifiedTable);
            assertEquals(2, resultSet.size());
            Iterator<UntypedResultSet.Row> iter = resultSet.iterator();
            UntypedResultSet.Row insertedRow = iter.next();
            assertEquals("v0.2", insertedRow.getString("v"));
            assertEquals("a", insertedRow.getString("k"));
            assertEquals(1, insertedRow.getInt("c1"));
            assertEquals(2, insertedRow.getInt("c2"));
            UntypedResultSet.Row updatedRow = iter.next();
            assertEquals("v0.3", updatedRow.getString("v"));
            assertEquals("b", updatedRow.getString("k"));
            assertEquals(3, updatedRow.getInt("c1"));
            assertEquals(4, updatedRow.getInt("c2"));

            deleteWriter.addRow("a", 1, 2);
            deleteWriter.addRow("b", 3, 4);

        }

        deleteWriter.close();
        loadSSTables(dataDir, keyspace, table);

        if (verifyDataAfterLoading)
        {
            UntypedResultSet resultSet = QueryProcessor.executeInternal("SELECT * FROM " + qualifiedTable);
            assertEquals(1, resultSet.size());
            Iterator<UntypedResultSet.Row> iter = resultSet.iterator();
            UntypedResultSet.Row modifiedRow = iter.next();
            assertFalse(modifiedRow.has("v"));
            assertEquals("a", modifiedRow.getString("k"));
            assertEquals(1, modifiedRow.getInt("c1"));
            assertEquals(2, modifiedRow.getInt("c2"));
        }
    }

    @Test
    public void testConcurrentWriters() throws Exception
    {
        WriterThread[] threads = new WriterThread[5];
        for (int i = 0; i < threads.length; i++)
        {
            WriterThread thread = new WriterThread(dataDir, i, qualifiedTable);
            threads[i] = thread;
            thread.start();
        }

        for (WriterThread thread : threads)
        {
            thread.join();
            assert !thread.isAlive() : "Thread should be dead by now";
            if (thread.exception != null)
            {
                throw thread.exception;
            }
        }

        loadSSTables(dataDir, keyspace, table);

        if (verifyDataAfterLoading)
        {
            UntypedResultSet rs = QueryProcessor.executeInternal("SELECT * FROM " + qualifiedTable + ";");
            assertEquals(threads.length * NUMBER_WRITES_IN_RUNNABLE, rs.size());
        }
    }

    @Test
    @SuppressWarnings("unchecked")
    public void testWritesWithUdts() throws Exception
    {
        final String schema = "CREATE TABLE " + qualifiedTable + " ("
                              + "  k int,"
                              + "  v1 list<frozen<tuple2>>,"
                              + "  v2 frozen<tuple3>,"
                              + "  PRIMARY KEY (k)"
                              + ")";

        CQLSSTableWriter writer = CQLSSTableWriter.builder()
                                                  .inDirectory(dataDir)
                                                  .withType("CREATE TYPE " + keyspace + ".tuple2 (a int, b int)")
                                                  .withType("CREATE TYPE " + keyspace + ".tuple3 (a int, b int, c int)")
                                                  .forTable(schema)
                                                  .using("INSERT INTO " + keyspace + "." + table + " (k, v1, v2) " +
                                                         "VALUES (?, ?, ?)").build();

        UserType tuple2Type = writer.getUDType("tuple2");
        UserType tuple3Type = writer.getUDType("tuple3");
        for (int i = 0; i < 100; i++)
        {
            writer.addRow(i,
                          ImmutableList.builder()
                                       .add(tuple2Type.newValue()
                                                      .setInt("a", i * 10)
                                                      .setInt("b", i * 20))
                                       .add(tuple2Type.newValue()
                                                      .setInt("a", i * 30)
                                                      .setInt("b", i * 40))
                                       .build(),
                          tuple3Type.newValue()
                                    .setInt("a", i * 100)
                                    .setInt("b", i * 200)
                                    .setInt("c", i * 300));
        }

        writer.close();
        loadSSTables(dataDir, keyspace, table);

        if (verifyDataAfterLoading)
        {
            UntypedResultSet resultSet = QueryProcessor.executeInternal("SELECT * FROM " + keyspace + "." + table);
            TypeCodec collectionCodec = JavaDriverUtils.codecFor(DataType.CollectionType.list(tuple2Type));
            TypeCodec tuple3Codec = JavaDriverUtils.codecFor(tuple3Type);

            assertEquals(resultSet.size(), 100);
            int cnt = 0;
            for (UntypedResultSet.Row row : resultSet)
            {
                assertEquals(cnt,
                             row.getInt("k"));
                List<UDTValue> values = (List<UDTValue>) collectionCodec.deserialize(row.getBytes("v1"),
                                                                                     ProtocolVersion.CURRENT);
                assertEquals(values.get(0).getInt("a"), cnt * 10);
                assertEquals(values.get(0).getInt("b"), cnt * 20);
                assertEquals(values.get(1).getInt("a"), cnt * 30);
                assertEquals(values.get(1).getInt("b"), cnt * 40);

                UDTValue v2 = (UDTValue) tuple3Codec.deserialize(row.getBytes("v2"), ProtocolVersion.CURRENT);

                assertEquals(v2.getInt("a"), cnt * 100);
                assertEquals(v2.getInt("b"), cnt * 200);
                assertEquals(v2.getInt("c"), cnt * 300);
                cnt++;
            }
        }
    }

    @Test
    @SuppressWarnings("unchecked")
    public void testWritesWithDependentUdts() throws Exception
    {
        final String schema = "CREATE TABLE " + qualifiedTable + " ("
                              + "  k int,"
                              + "  v1 frozen<nested_tuple>,"
                              + "  PRIMARY KEY (k)"
                              + ")";

        CQLSSTableWriter writer = CQLSSTableWriter.builder()
                                                  .inDirectory(dataDir)
                                                  .withType("CREATE TYPE " + keyspace + ".nested_tuple (c int, tpl frozen<tuple2>)")
                                                  .withType("CREATE TYPE " + keyspace + ".tuple2 (a int, b int)")
                                                  .forTable(schema)
                                                  .using("INSERT INTO " + keyspace + "." + table + " (k, v1) " +
                                                         "VALUES (?, ?)")
                                                  .build();

        UserType tuple2Type = writer.getUDType("tuple2");
        UserType nestedTuple = writer.getUDType("nested_tuple");
        TypeCodec tuple2Codec = JavaDriverUtils.codecFor(tuple2Type);
        TypeCodec nestedTupleCodec = JavaDriverUtils.codecFor(nestedTuple);

        for (int i = 0; i < 100; i++)
        {
            writer.addRow(i,
                          nestedTuple.newValue()
                                     .setInt("c", i * 100)
                                     .set("tpl",
                                          tuple2Type.newValue()
                                                    .setInt("a", i * 200)
                                                    .setInt("b", i * 300),
                                          tuple2Codec));
        }

        writer.close();
        loadSSTables(dataDir, keyspace, table);

        if (verifyDataAfterLoading)
        {
            UntypedResultSet resultSet = QueryProcessor.executeInternal("SELECT * FROM " + keyspace + "." + table);

            assertEquals(resultSet.size(), 100);
            int cnt = 0;
            for (UntypedResultSet.Row row : resultSet)
            {
                assertEquals(cnt,
                             row.getInt("k"));
                UDTValue nestedTpl = (UDTValue) nestedTupleCodec.deserialize(row.getBytes("v1"),
                                                                             ProtocolVersion.CURRENT);
                assertEquals(nestedTpl.getInt("c"), cnt * 100);
                UDTValue tpl = nestedTpl.getUDTValue("tpl");
                assertEquals(tpl.getInt("a"), cnt * 200);
                assertEquals(tpl.getInt("b"), cnt * 300);

                cnt++;
            }
        }
    }

    @Test
    public void testUnsetValues() throws Exception
    {
        final String schema = "CREATE TABLE " + qualifiedTable + " ("
                              + "  k int,"
                              + "  c1 int,"
                              + "  c2 int,"
                              + "  v text,"
                              + "  PRIMARY KEY (k, c1, c2)"
                              + ")";

        CQLSSTableWriter writer = CQLSSTableWriter.builder()
                                                  .inDirectory(dataDir)
                                                  .forTable(schema)
                                                  .using("INSERT INTO " + qualifiedTable + " (k, c1, c2, v) " +
                                                         "VALUES (?, ?, ?, ?)")
                                                  .build();

        try
        {
            writer.addRow(1, 1, 1);
            fail("Passing less arguments then expected in prepared statement should not work.");
        }
        catch (InvalidRequestException e)
        {
            assertEquals("Invalid number of arguments, expecting 4 values but got 3",
                         e.getMessage());
        }

        try
        {
            writer.addRow(1, 1, CQLSSTableWriter.UNSET_VALUE, "1");
            fail("Unset values should not work with clustering columns.");
        }
        catch (InvalidRequestException e)
        {
            assertEquals("Invalid unset value for column c2",
                         e.getMessage());
        }

        try
        {
            writer.addRow(ImmutableMap.<String, Object>builder().put("k", 1).put("c1", 1).put("v", CQLSSTableWriter.UNSET_VALUE).build());
            fail("Unset or null clustering columns should not be allowed.");
        }
        catch (InvalidRequestException e)
        {
            assertEquals("Invalid null value for column c2",
                         e.getMessage());
        }

        writer.addRow(1, 1, 1, CQLSSTableWriter.UNSET_VALUE);
        writer.addRow(2, 2, 2, null);
        writer.addRow(Arrays.asList(3, 3, 3, CQLSSTableWriter.UNSET_VALUE));
        writer.addRow(ImmutableMap.<String, Object>builder()
                                  .put("k", 4)
                                  .put("c1", 4)
                                  .put("c2", 4)
                                  .put("v", CQLSSTableWriter.UNSET_VALUE)
                                  .build());
        writer.addRow(Arrays.asList(3, 3, 3, CQLSSTableWriter.UNSET_VALUE));
        writer.addRow(5, 5, 5, "5");

        writer.close();
        loadSSTables(dataDir, keyspace, table);

        if (verifyDataAfterLoading)
        {
            UntypedResultSet resultSet = QueryProcessor.executeInternal("SELECT * FROM " + qualifiedTable);
            Iterator<UntypedResultSet.Row> iter = resultSet.iterator();
            UntypedResultSet.Row r1 = iter.next();
            assertEquals(1, r1.getInt("k"));
            assertEquals(1, r1.getInt("c1"));
            assertEquals(1, r1.getInt("c2"));
            assertEquals(false, r1.has("v"));
            UntypedResultSet.Row r2 = iter.next();
            assertEquals(2, r2.getInt("k"));
            assertEquals(2, r2.getInt("c1"));
            assertEquals(2, r2.getInt("c2"));
            assertEquals(false, r2.has("v"));
            UntypedResultSet.Row r3 = iter.next();
            assertEquals(3, r3.getInt("k"));
            assertEquals(3, r3.getInt("c1"));
            assertEquals(3, r3.getInt("c2"));
            assertEquals(false, r3.has("v"));
            UntypedResultSet.Row r4 = iter.next();
            assertEquals(4, r4.getInt("k"));
            assertEquals(4, r4.getInt("c1"));
            assertEquals(4, r4.getInt("c2"));
            assertEquals(false, r3.has("v"));
            UntypedResultSet.Row r5 = iter.next();
            assertEquals(5, r5.getInt("k"));
            assertEquals(5, r5.getInt("c1"));
            assertEquals(5, r5.getInt("c2"));
            assertEquals(true, r5.has("v"));
            assertEquals("5", r5.getString("v"));
        }
    }

    @Test
    public void testUpdateStatement() throws Exception
    {
        final String schema = "CREATE TABLE " + qualifiedTable + " ("
                              + "  k int,"
                              + "  c1 int,"
                              + "  c2 int,"
                              + "  v text,"
                              + "  PRIMARY KEY (k, c1, c2)"
                              + ")";

        CQLSSTableWriter writer = CQLSSTableWriter.builder()
                                                  .inDirectory(dataDir)
                                                  .forTable(schema)
                                                  .using("UPDATE " + qualifiedTable + " SET v = ? " +
                                                         "WHERE k = ? AND c1 = ? AND c2 = ?")
                                                  .build();

        writer.addRow("a", 1, 2, 3);
        writer.addRow("b", 4, 5, 6);
        writer.addRow(null, 7, 8, 9);
        writer.addRow(CQLSSTableWriter.UNSET_VALUE, 10, 11, 12);
        writer.close();
        loadSSTables(dataDir, keyspace, table);

        if (verifyDataAfterLoading)
        {
            UntypedResultSet resultSet = QueryProcessor.executeInternal("SELECT * FROM " + qualifiedTable);
            assertEquals(2, resultSet.size());

            Iterator<UntypedResultSet.Row> iter = resultSet.iterator();
            UntypedResultSet.Row r1 = iter.next();
            assertEquals(1, r1.getInt("k"));
            assertEquals(2, r1.getInt("c1"));
            assertEquals(3, r1.getInt("c2"));
            assertEquals("a", r1.getString("v"));
            UntypedResultSet.Row r2 = iter.next();
            assertEquals(4, r2.getInt("k"));
            assertEquals(5, r2.getInt("c1"));
            assertEquals(6, r2.getInt("c2"));
            assertEquals("b", r2.getString("v"));
            assertFalse(iter.hasNext());
        }
    }

    @Test
    public void testNativeFunctions() throws Exception
    {
        final String schema = "CREATE TABLE " + qualifiedTable + " ("
                              + "  k int,"
                              + "  c1 int,"
                              + "  c2 int,"
                              + "  v blob,"
                              + "  PRIMARY KEY (k, c1, c2)"
                              + ")";

        CQLSSTableWriter writer = CQLSSTableWriter.builder()
                                                  .inDirectory(dataDir)
                                                  .forTable(schema)
                                                  .using("INSERT INTO " + qualifiedTable + " (k, c1, c2, v) VALUES (?, ?, ?, text_as_blob(?))")
                                                  .build();

        writer.addRow(1, 2, 3, "abc");
        writer.addRow(4, 5, 6, "efg");

        writer.close();
        loadSSTables(dataDir, keyspace, table);

        if (verifyDataAfterLoading)
        {
            UntypedResultSet resultSet = QueryProcessor.executeInternal("SELECT * FROM " + qualifiedTable);
            assertEquals(2, resultSet.size());

            Iterator<UntypedResultSet.Row> iter = resultSet.iterator();
            UntypedResultSet.Row r1 = iter.next();
            assertEquals(1, r1.getInt("k"));
            assertEquals(2, r1.getInt("c1"));
            assertEquals(3, r1.getInt("c2"));
            assertEquals(ByteBufferUtil.bytes("abc"), r1.getBytes("v"));

            UntypedResultSet.Row r2 = iter.next();
            assertEquals(4, r2.getInt("k"));
            assertEquals(5, r2.getInt("c1"));
            assertEquals(6, r2.getInt("c2"));
            assertEquals(ByteBufferUtil.bytes("efg"), r2.getBytes("v"));

            assertFalse(iter.hasNext());
        }
    }

    @Test
    public void testWriteWithNestedTupleUdt() throws Exception
    {
        // Check the writer does not throw "InvalidRequestException: Non-frozen tuples are not allowed inside collections: list<tuple<int, int>>"
        // See CASSANDRA-15857
        final String schema = "CREATE TABLE " + qualifiedTable + " ("
                              + "  k int,"
                              + "  v1 frozen<nested_type>,"
                              + "  PRIMARY KEY (k)"
                              + ")";

        CQLSSTableWriter writer = CQLSSTableWriter.builder()
                                                  .inDirectory(dataDir)
                                                  .withType("CREATE TYPE " + keyspace + ".nested_type (a list<tuple<int, int>>)")
                                                  .forTable(schema)
                                                  .using("INSERT INTO " + qualifiedTable + " (k, v1) " +
                                                         "VALUES (?, ?)").build();

        UserType nestedType = writer.getUDType("nested_type");
        for (int i = 0; i < 100; i++)
        {
            writer.addRow(i, nestedType.newValue()
                                       .setList("a", Collections.emptyList()));
        }

        writer.close();
        loadSSTables(dataDir, keyspace, table);

        if (verifyDataAfterLoading)
        {
            UntypedResultSet resultSet = QueryProcessor.executeInternal("SELECT * FROM " + qualifiedTable);
            assertEquals(100, resultSet.size());
        }
    }

    @Test
    public void testDateType() throws Exception
    {
        // Test to make sure we can write to `date` fields in both old and new formats
        String schema = "CREATE TABLE " + qualifiedTable + " ("
                        + "  k int,"
                        + "  c date,"
                        + "  PRIMARY KEY (k)"
                        + ")";
        String insert = "INSERT INTO " + qualifiedTable + " (k, c) VALUES (?, ?)";
        CQLSSTableWriter writer = CQLSSTableWriter.builder()
                                                  .inDirectory(dataDir)
                                                  .forTable(schema)
                                                  .using(insert)
                                                  .withBufferSizeInMB(1)
                                                  .build();

        final int ID_OFFSET = 1000;
        for (int i = 0; i < 100; i++)
        {
            // Use old-style integer as date to test backwards-compatibility
            writer.addRow(i, i - Integer.MIN_VALUE); // old-style raw integer needs to be offset
            // Use new-style `LocalDate` for date value.
            writer.addRow(i + ID_OFFSET, LocalDate.fromDaysSinceEpoch(i));
        }
        writer.close();
        loadSSTables(dataDir, keyspace, table);

        if (verifyDataAfterLoading)
        {
            UntypedResultSet rs = QueryProcessor.executeInternal("SELECT * FROM " + qualifiedTable + ";");
            assertEquals(200, rs.size());
            Map<Integer, LocalDate> map = StreamSupport.stream(rs.spliterator(), false)
                                                       .collect(Collectors.toMap(r -> r.getInt("k"), r -> r.getDate("c")));
            for (int i = 0; i < 100; i++)
            {
                final LocalDate expected = LocalDate.fromDaysSinceEpoch(i);
                assertEquals(expected, map.get(i + ID_OFFSET));
                assertEquals(expected, map.get(i));
            }
        }
    }

    @Test
    public void testFrozenMapType() throws Exception
    {
        // Test to make sure we can write to `date` fields in both old and new formats
        String schema = "CREATE TABLE " + qualifiedTable + " ("
                        + "  k text,"
                        + "  c frozen<map<text, text>>,"
                        + "  PRIMARY KEY (k, c)"
                        + ")";
        String insert = "INSERT INTO " + qualifiedTable + " (k, c) VALUES (?, ?)";
        CQLSSTableWriter writer = CQLSSTableWriter.builder()
                                                  .inDirectory(dataDir)
                                                  .forTable(schema)
                                                  .using(insert)
                                                  .withBufferSizeInMB(1)
                                                  .build();
        for (int i = 0; i < 100; i++)
        {
            LinkedHashMap<String, String> map = new LinkedHashMap<>();
            map.put("a_key", "av" + i);
            map.put("b_key", "zv" + i);
            writer.addRow(String.valueOf(i), map);
        }
        for (int i = 100; i < 200; i++)
        {
            LinkedHashMap<String, String> map = new LinkedHashMap<>();
            map.put("b_key", "zv" + i);
            map.put("a_key", "av" + i);
            writer.addRow(String.valueOf(i), map);
        }
        writer.close();
        loadSSTables(dataDir, keyspace, table);

        if (verifyDataAfterLoading)
        {
            UntypedResultSet rs = QueryProcessor.executeInternal("SELECT * FROM " + qualifiedTable + ";");
            assertEquals(200, rs.size());
            Map<String, Map<String, String>> map = StreamSupport.stream(rs.spliterator(), false)
                                                                .collect(Collectors.toMap(r -> r.getString("k"), r -> r.getFrozenMap("c", UTF8Type.instance, UTF8Type.instance)));
            for (int i = 0; i < 200; i++)
            {
                final String expectedKey = String.valueOf(i);
                assertTrue(map.containsKey(expectedKey));
                Map<String, String> innerMap = map.get(expectedKey);
                assertTrue(innerMap.containsKey("a_key"));
                assertEquals(innerMap.get("a_key"), "av" + i);
                assertTrue(innerMap.containsKey("b_key"));
                assertEquals(innerMap.get("b_key"), "zv" + i);
            }

            // Make sure we can filter with map values regardless of which order we put the keys in
            UntypedResultSet filtered;
            filtered = QueryProcessor.executeInternal("SELECT * FROM " + qualifiedTable + " where k='0' and c={'a_key': 'av0', 'b_key': 'zv0'};");
            assertEquals(1, filtered.size());
            filtered = QueryProcessor.executeInternal("SELECT * FROM " + qualifiedTable + " where k='0' and c={'b_key': 'zv0', 'a_key': 'av0'};");
            assertEquals(1, filtered.size());
            filtered = QueryProcessor.executeInternal("SELECT * FROM " + qualifiedTable + " where k='100' and c={'b_key': 'zv100', 'a_key': 'av100'};");
            assertEquals(1, filtered.size());
            filtered = QueryProcessor.executeInternal("SELECT * FROM " + qualifiedTable + " where k='100' and c={'a_key': 'av100', 'b_key': 'zv100'};");
            assertEquals(1, filtered.size());
        }
    }

    @Test
    public void testFrozenMapTypeCustomOrdered() throws Exception
    {
        // Test to make sure we can write to `date` fields in both old and new formats
        String schema = "CREATE TABLE " + qualifiedTable + " ("
                        + "  k text,"
                        + "  c frozen<map<timeuuid, int>>,"
                        + "  PRIMARY KEY (k, c)"
                        + ")";
        String insert = "INSERT INTO " + qualifiedTable + " (k, c) VALUES (?, ?)";
        CQLSSTableWriter writer = CQLSSTableWriter.builder()
                                                  .inDirectory(dataDir)
                                                  .forTable(schema)
                                                  .using(insert)
                                                  .withBufferSizeInMB(1)
                                                  .build();
        UUID uuid1 = UUIDs.timeBased();
        UUID uuid2 = UUIDs.timeBased();
        UUID uuid3 = UUIDs.timeBased();
        UUID uuid4 = UUIDs.timeBased();
        Map<UUID, Integer> map = new LinkedHashMap<>();
        // NOTE: if these two `put` calls are switched, the test passes
        map.put(uuid2, 2);
        map.put(uuid1, 1);
        writer.addRow(String.valueOf(1), map);

        Map<UUID, Integer> map2 = new LinkedHashMap<>();
        map2.put(uuid3, 1);
        map2.put(uuid4, 2);
        writer.addRow(String.valueOf(2), map2);

        writer.close();
        loadSSTables(dataDir, keyspace, table);

        if (verifyDataAfterLoading)
        {
            UntypedResultSet rs = QueryProcessor.executeInternal("SELECT * FROM " + qualifiedTable + ";");
            assertEquals(2, rs.size());

            // Make sure we can filter with map values regardless of which order we put the keys in
            UntypedResultSet filtered;
            filtered = QueryProcessor.executeInternal("SELECT * FROM " + qualifiedTable + " where k='1' and c={" + uuid1 + ": 1, " + uuid2 + ": 2};");
            assertEquals(1, filtered.size());
            filtered = QueryProcessor.executeInternal("SELECT * FROM " + qualifiedTable + " where k='1' and c={" + uuid2 + ": 2, " + uuid1 + ": 1};");
            assertEquals(1, filtered.size());
            filtered = QueryProcessor.executeInternal("SELECT * FROM " + qualifiedTable + " where k='2' and c={" + uuid3 + ": 1, " + uuid4 + ": 2};");
            assertEquals(1, filtered.size());
            filtered = QueryProcessor.executeInternal("SELECT * FROM " + qualifiedTable + " where k='2' and c={" + uuid4 + ": 2, " + uuid3 + ": 1};");
            assertEquals(1, filtered.size());
            UUID other = UUIDs.startOf(1234L); // Just some other TimeUUID
            filtered = QueryProcessor.executeInternal("SELECT * FROM " + qualifiedTable + " where k='2' and c={" + uuid3 + ": 1, " + other + ": 2};");
            assertEquals(0, filtered.size());
            filtered = QueryProcessor.executeInternal("SELECT * FROM " + qualifiedTable + " where k='2' and c={" + uuid4 + ": 2, " + other + ": 1};");
            assertEquals(0, filtered.size());
        }
    }

    @Test
    public void testFrozenSetTypeCustomOrdered() throws Exception
    {
        // Test to make sure we can write to `date` fields in both old and new formats
        String schema = "CREATE TABLE " + qualifiedTable + " ("
                        + "  k text,"
                        + "  c frozen<set<timeuuid>>,"
                        + "  PRIMARY KEY (k, c)"
                        + ")";
        String insert = "INSERT INTO " + qualifiedTable + " (k, c) VALUES (?, ?)";
        CQLSSTableWriter writer = CQLSSTableWriter.builder()
                                                  .inDirectory(dataDir)
                                                  .forTable(schema)
                                                  .using(insert)
                                                  .withBufferSizeInMB(1)
                                                  .build();
        UUID uuid1 = UUIDs.startOf(0L);
        UUID uuid2 = UUIDs.startOf(10000000L);

        LinkedHashSet<UUID> set = new LinkedHashSet<>();
        set.add(uuid1);
        set.add(uuid2);
        writer.addRow(String.valueOf(1), set);

        LinkedHashSet<UUID> set2 = new LinkedHashSet<>();
        set2.add(uuid2);
        set2.add(uuid1);
        writer.addRow(String.valueOf(2), set2);

        writer.close();
        loadSSTables(dataDir, keyspace, table);

        if (verifyDataAfterLoading)
        {
            UntypedResultSet rs = QueryProcessor.executeInternal("SELECT * FROM " + qualifiedTable + ";");
            assertEquals(2, rs.size());

            // Make sure we can filter with map values regardless of which order we put the keys in
            UntypedResultSet filtered;
            filtered = QueryProcessor.executeInternal("SELECT * FROM " + qualifiedTable + " where k='1' and c={" + uuid1 + ", " + uuid2 + "};");
            assertEquals(1, filtered.size());
            filtered = QueryProcessor.executeInternal("SELECT * FROM " + qualifiedTable + " where k='1' and c={" + uuid2 + ", " + uuid1 + "};");
            assertEquals(1, filtered.size());
            filtered = QueryProcessor.executeInternal("SELECT * FROM " + qualifiedTable + " where k='2' and c={" + uuid1 + ", " + uuid2 + "};");
            assertEquals(1, filtered.size());
            filtered = QueryProcessor.executeInternal("SELECT * FROM " + qualifiedTable + " where k='2' and c={" + uuid2 + ", " + uuid1 + "};");
            assertEquals(1, filtered.size());
            UUID other = UUIDs.startOf(10000000L + 1L); // Pick one that's really close just to make sure clustering filters are working
            filtered = QueryProcessor.executeInternal("SELECT * FROM " + qualifiedTable + " where k='2' and c={" + uuid1 + ", " + other + "};");
            assertEquals(0, filtered.size());
            filtered = QueryProcessor.executeInternal("SELECT * FROM " + qualifiedTable + " where k='2' and c={" + other + ", " + uuid1 + "};");
            assertEquals(0, filtered.size());
        }
    }

    @Test
    public void testWriteWithTimestamps() throws Exception
    {
        long now = currentTimeMillis();
        long then = now - 1000;
        final String schema = "CREATE TABLE " + qualifiedTable + " ("
                              + "  k int,"
                              + "  v1 int,"
                              + "  v2 int,"
                              + "  v3 text,"
                              + "  PRIMARY KEY (k)"
                              + ")";

        CQLSSTableWriter writer = CQLSSTableWriter.builder()
                                                  .inDirectory(dataDir)
                                                  .forTable(schema)
                                                  .using("INSERT INTO " + qualifiedTable +
                                                         " (k, v1, v2, v3) VALUES (?,?,?,?) using timestamp ?")
                                                  .build();

        // Note that, all other things being equal, Cassandra will sort these rows lexicographically, so we use "higher" values in the
        // row we expect to "win" so that we're sure that it isn't just accidentally picked due to the row sorting.
        writer.addRow(1, 4, 5, "b", now); // This write should be the one found at the end because it has a higher timestamp
        writer.addRow(1, 2, 3, "a", then);
        writer.close();
        loadSSTables(dataDir, keyspace, table);

        if (verifyDataAfterLoading)
        {
            UntypedResultSet resultSet = QueryProcessor.executeInternal("SELECT * FROM " + qualifiedTable);
            assertEquals(1, resultSet.size());

            Iterator<UntypedResultSet.Row> iter = resultSet.iterator();
            UntypedResultSet.Row r1 = iter.next();
            assertEquals(1, r1.getInt("k"));
            assertEquals(4, r1.getInt("v1"));
            assertEquals(5, r1.getInt("v2"));
            assertEquals("b", r1.getString("v3"));
            assertFalse(iter.hasNext());
        }
    }

    @Test
    public void testWriteWithTtl() throws Exception
    {
        final String schema = "CREATE TABLE " + qualifiedTable + " ("
                              + "  k int,"
                              + "  v1 int,"
                              + "  v2 int,"
                              + "  v3 text,"
                              + "  PRIMARY KEY (k)"
                              + ")";

        CQLSSTableWriter.Builder builder = CQLSSTableWriter.builder()
                                                           .inDirectory(dataDir)
                                                           .forTable(schema)
                                                           .using("INSERT INTO " + qualifiedTable +
                                                                  " (k, v1, v2, v3) VALUES (?,?,?,?) using TTL ?");
        CQLSSTableWriter writer = builder.build();
        // add a row that _should_ show up - 1 hour TTL
        writer.addRow(1, 2, 3, "a", 3600);
        // Insert a row with a TTL of 1 second - should not appear in results once we sleep
        writer.addRow(2, 4, 5, "b", 1);
        writer.close();
        Thread.sleep(1200); // Slightly over 1 second, just to make sure
        loadSSTables(dataDir, keyspace, table);

        if (verifyDataAfterLoading)
        {
            UntypedResultSet resultSet = QueryProcessor.executeInternal("SELECT * FROM " + qualifiedTable);
            assertEquals(1, resultSet.size());

            Iterator<UntypedResultSet.Row> iter = resultSet.iterator();
            UntypedResultSet.Row r1 = iter.next();
            assertEquals(1, r1.getInt("k"));
            assertEquals(2, r1.getInt("v1"));
            assertEquals(3, r1.getInt("v2"));
            assertEquals("a", r1.getString("v3"));
            assertFalse(iter.hasNext());
        }
    }

    @Test
    public void testWriteWithTimestampsAndTtl() throws Exception
    {
        final String schema = "CREATE TABLE " + qualifiedTable + " ("
                              + "  k int,"
                              + "  v1 int,"
                              + "  v2 int,"
                              + "  v3 text,"
                              + "  PRIMARY KEY (k)"
                              + ")";

        CQLSSTableWriter writer = CQLSSTableWriter.builder()
                                                  .inDirectory(dataDir)
                                                  .forTable(schema)
                                                  .using("INSERT INTO " + qualifiedTable +
                                                         " (k, v1, v2, v3) VALUES (?,?,?,?) using timestamp ? AND TTL ?")
                                                  .build();
        // NOTE: It would be easier to make this a timestamp in the past, but Cassandra also has a _local_ deletion time
        // which is based on the server's timestamp, so simply setting the timestamp to some time in the past
        // doesn't actually do what you'd think it would do.
        long oneSecondFromNow = TimeUnit.MILLISECONDS.toMicros(currentTimeMillis() + 1000);
        // Insert some rows with a timestamp of 1 second from now, and different TTLs
        // add a row that _should_ show up - 1 hour TTL
        writer.addRow(1, 2, 3, "a", oneSecondFromNow, 3600);
        // Insert a row "two seconds ago" with a TTL of 1 second - should not appear in results
        writer.addRow(2, 4, 5, "b", oneSecondFromNow, 1);
        writer.close();
        loadSSTables(dataDir, keyspace, table);

        if (verifyDataAfterLoading)
        {
            UntypedResultSet resultSet = QueryProcessor.executeInternal("SELECT * FROM " + qualifiedTable);
            Thread.sleep(1200);
            resultSet = QueryProcessor.executeInternal("SELECT * FROM " + qualifiedTable);
            assertEquals(1, resultSet.size());

            Iterator<UntypedResultSet.Row> iter = resultSet.iterator();
            UntypedResultSet.Row r1 = iter.next();
            assertEquals(1, r1.getInt("k"));
            assertEquals(2, r1.getInt("v1"));
            assertEquals(3, r1.getInt("v2"));
            assertEquals("a", r1.getString("v3"));
            assertFalse(iter.hasNext());
        }
    }

    @Test
    public void testWriteWithSorted() throws Exception
    {
        String schema = "CREATE TABLE " + qualifiedTable + " ("
                        + "  k int PRIMARY KEY,"
                        + "  v blob )";
        CQLSSTableWriter writer = CQLSSTableWriter.builder()
                                                  .inDirectory(dataDir)
                                                  .forTable(schema)
                                                  .using("INSERT INTO " + qualifiedTable +
                                                         " (k, v) VALUES (?, text_as_blob(?))")
                                                  .sorted()
                                                  .build();
        int rowCount = 10_000;
        for (int i = 0; i < rowCount; i++)
        {
            writer.addRow(i, UUID.randomUUID().toString());
        }
        writer.close();
        loadSSTables(dataDir, keyspace, table);

        if (verifyDataAfterLoading)
        {
            UntypedResultSet resultSet = QueryProcessor.executeInternal("SELECT * FROM " + qualifiedTable);
            assertEquals(rowCount, resultSet.size());
            Iterator<UntypedResultSet.Row> iter = resultSet.iterator();
            for (int i = 0; i < rowCount; i++)
            {
                UntypedResultSet.Row row = iter.next();
                assertEquals(i, row.getInt("k"));
            }
        }
    }

    @Test
    public void testWriteWithSortedAndMaxSize() throws Exception
    {
        String schema = "CREATE TABLE " + qualifiedTable + " ("
                        + "  k int PRIMARY KEY,"
                        + "  v blob )";
        CQLSSTableWriter writer = CQLSSTableWriter.builder()
                                                  .inDirectory(dataDir)
                                                  .forTable(schema)
                                                  .using("INSERT INTO " + qualifiedTable +
                                                         " (k, v) VALUES (?, text_as_blob(?))")
                                                  .sorted()
                                                  .withMaxSSTableSizeInMiB(1)
                                                  .build();
        int rowCount = 30_000;
        // Max SSTable size is 1 MiB
        // 30_000 rows should take 30_000 * (4 + 37) = 1.17 MiB > 1 MiB
        for (int i = 0; i < rowCount; i++)
        {
            writer.addRow(i, UUID.randomUUID().toString());
        }
        writer.close();

        File[] dataFiles = dataDir.list(f -> f.name().endsWith(BigFormat.Components.DATA.type.repr));
        assertNotNull(dataFiles);
        assertEquals("The sorted writer should produce 2 sstables when max sstable size is configured",
                     2, dataFiles.length);
        long closeTo1MiBFileSize = Math.max(dataFiles[0].length(), dataFiles[1].length());
        assertTrue("The file size should be close to 1MiB (with at most 50KiB error rate for the test)",
                   Math.abs(1024 * 1024 - closeTo1MiBFileSize) < 50 * 1024);

        loadSSTables(dataDir, keyspace, table);

        if (verifyDataAfterLoading)
        {
            UntypedResultSet resultSet = QueryProcessor.executeInternal("SELECT * FROM " + qualifiedTable);
            assertEquals(rowCount, resultSet.size());
            Iterator<UntypedResultSet.Row> iter = resultSet.iterator();
            for (int i = 0; i < rowCount; i++)
            {
                UntypedResultSet.Row row = iter.next();
                assertEquals(i, row.getInt("k"));
            }
        }
    }

    @Test
    public void testNotifySSTableFinishedForSorted() throws Exception
    {
        testNotifySSTableFinished(true, false);
    }

    @Test
    public void testNotifySSTableFinishedForUnsorted() throws Exception
    {
        testNotifySSTableFinished(false, false);
    }

    @Test
    public void testCloseSortedWriterOnFirstPorducedShouldStillResultInTwoSSTables() throws Exception
    {
        // Writing a new partition (and exceeding the size limit) lead to closing the current writer and buffering the last partition update.
        // Since there is a last partition buffered, closing the sstable writer flushes to a new sstable.
        // Therefore, even though the test closes the writer immediately, there are still 2 sstables produced.
        testNotifySSTableFinished(true, true);
    }

    private void testNotifySSTableFinished(boolean sorted, boolean closeWriterOnFirstProduced) throws Exception
    {
        List<SSTableReader> produced = new ArrayList<>();
        String schema = "CREATE TABLE " + qualifiedTable + " ("
                        + "  k int PRIMARY KEY,"
                        + "  v blob )";
        CQLSSTableWriter.Builder builder = CQLSSTableWriter
                                           .builder()
                                           .inDirectory(dataDir)
                                           .forTable(schema)
                                           .using("INSERT INTO " + qualifiedTable +
                                                  " (k, v) VALUES (?, text_as_blob(?))")
                                           .withMaxSSTableSizeInMiB(1)
                                           .openSSTableOnProduced()
                                           .withSSTableProducedListener(produced::addAll);
        if (sorted)
        {
            builder.sorted();
        }
        CQLSSTableWriter writer = builder.build();

        int rowCount = 30_000;
        // Max SSTable size is 1 MiB
        // 30_000 rows should take 30_000 * (4 + 37) = 1.17 MiB > 1 MiB, i.e. producing 2 sstables
        for (int i = 0; i < rowCount; i++)
        {
            writer.addRow(i, UUID.randomUUID().toString());
            if (closeWriterOnFirstProduced && !produced.isEmpty())
            {
                // on closing writer, it flushes the last update to the new sstable
                writer.close();
                break;
            }
        }
        // the assertion is only performed for sorted because unsorted writer writes asynchrously; avoid flakiness
        if (!closeWriterOnFirstProduced && sorted)
        {
            // while writing, one sstable should be finished
            assertEquals(1, produced.size());
        }

        if (!closeWriterOnFirstProduced)
            writer.close();
        // another sstable is finished on closing the writer
        assertEquals(2, produced.size());

        File[] dataFiles = dataDir.list(f -> f.name().endsWith(BigFormat.Components.DATA.type.repr));
        assertNotNull(dataFiles);
        assertEquals("The sorted writer should produce 2 sstables when max sstable size is configured",
                     2, dataFiles.length);
        Set<File> notifiedDataFileSet = produced.stream()
                                                .map(sstable -> sstable.descriptor.fileFor(BigFormat.Components.DATA))
                                                .collect(Collectors.toSet());
        Set<File> listedDataFileSet = Arrays.stream(dataFiles)
                                            .map(File::toCanonical)
                                            .collect(Collectors.toSet());
        assertEquals(notifiedDataFileSet, listedDataFileSet);
    }

    @Test
    public void testMultipleWritersWithDistinctTables() throws IOException
    {
        testWriterInClientMode("table1", "table2");
    }

    @Test
    public void testMultipleWritersWithSameTable() throws IOException
    {
        testWriterInClientMode("table1", "table1");
    }

    public void testWriterInClientMode(String table1, String table2) throws IOException, InvalidRequestException
    {
        String schema = "CREATE TABLE client_test.%s ("
                        + "  k int PRIMARY KEY,"
                        + "  v1 text,"
                        + "  v2 int"
                        + ")";
        String insert = "INSERT INTO client_test.%s (k, v1, v2) VALUES (?, ?, ?)";

        CQLSSTableWriter writer = CQLSSTableWriter.builder()
                                                  .inDirectory(dataDir)
                                                  .forTable(String.format(schema, table1))
                                                  .using(String.format(insert, table1)).build();

        CQLSSTableWriter writer2 = CQLSSTableWriter.builder()
                                                   .inDirectory(dataDir)
                                                   .forTable(String.format(schema, table2))
                                                   .using(String.format(insert, table2)).build();

        writer.addRow(0, "A", 0);
        writer2.addRow(0, "A", 0);
        writer.addRow(1, "B", 1);
        writer2.addRow(1, "B", 1);
        writer.close();
        writer2.close();

        BiPredicate<File, String> filter = (dir, name) -> name.endsWith("-Data.db");

        File[] dataFiles = dataDir.tryList(filter);
        assertEquals(2, dataFiles.length);
    }

    @Test
    public void testWriteWithSAI() throws Exception
    {
        writeWithSaiInternal();
        writeWithSaiInternal();
    }

    private void writeWithSaiInternal() throws Exception
    {
        String schema = "CREATE TABLE " + qualifiedTable + " ("
                        + "  k int PRIMARY KEY,"
                        + "  v1 text,"
                        + "  v2 int )";

        String v1Index = "CREATE INDEX idx1 ON " + qualifiedTable + " (v1) USING 'sai'";
        String v2Index = "CREATE INDEX idx2 ON " + qualifiedTable + " (v2) USING 'sai'";

        String insert = "INSERT INTO " + qualifiedTable + " (k, v1, v2) VALUES (?, ?, ?)";

        CQLSSTableWriter writer = CQLSSTableWriter.builder()
                                                  .inDirectory(dataDir)
                                                  .forTable(schema)
                                                  .using(insert)
                                                  .withIndexes(v1Index, v2Index)
                                                  .withBuildIndexes(true)
                                                  .withPartitioner(Murmur3Partitioner.instance)
                                                  .build();

        int rowCount = 30_000;
        for (int i = 0; i < rowCount; i++)
            writer.addRow(i, UUID.randomUUID().toString(), i);

        writer.close();

        File[] dataFiles = dataDir.list(f -> f.name().endsWith('-' + BigFormat.Components.DATA.type.repr));
        assertNotNull(dataFiles);

        IndexDescriptor indexDescriptor = IndexDescriptor.create(Descriptor.fromFile(dataFiles[0]),
                                                                 Murmur3Partitioner.instance,
                                                                 Schema.instance.getTableMetadata(keyspace, table).comparator);

        assertTrue(indexDescriptor.isPerColumnIndexBuildComplete(new IndexIdentifier(keyspace, table, "idx1")));
        assertTrue(indexDescriptor.isPerColumnIndexBuildComplete(new IndexIdentifier(keyspace, table, "idx2")));

        if (PathUtils.isDirectory(dataDir.toPath()))
            PathUtils.forEach(dataDir.toPath(), PathUtils::deleteRecursive);
    }

    @Test
    public void testSkipBuildingIndexesWithSAI() throws Exception
    {
        String schema = "CREATE TABLE " + qualifiedTable + " ("
                        + "  k int PRIMARY KEY,"
                        + "  v1 text,"
                        + "  v2 int )";

        String v1Index = "CREATE INDEX idx1 ON " + qualifiedTable + " (v1) USING 'sai'";
        String v2Index = "CREATE INDEX idx2 ON " + qualifiedTable + " (v2) USING 'sai'";

        String insert = "INSERT INTO " + qualifiedTable + " (k, v1, v2) VALUES (?, ?, ?)";

        CQLSSTableWriter writer = CQLSSTableWriter.builder()
                                                  .inDirectory(dataDir)
                                                  .forTable(schema)
                                                  .using(insert)
                                                  .withIndexes(v1Index, v2Index)
                                                  // not building indexes here so no SAI components will be present
                                                  .withBuildIndexes(false)
                                                  .withPartitioner(Murmur3Partitioner.instance)
                                                  .build();

        int rowCount = 30_000;
        for (int i = 0; i < rowCount; i++)
            writer.addRow(i, UUID.randomUUID().toString(), i);

        writer.close();

        File[] dataFiles = dataDir.list(f -> f.name().endsWith('-' + BigFormat.Components.DATA.type.repr));
        assertNotNull(dataFiles);

        IndexDescriptor indexDescriptor = IndexDescriptor.create(Descriptor.fromFile(dataFiles[0]),
                                                                 Murmur3Partitioner.instance,
                                                                 Schema.instance.getTableMetadata(keyspace, table).comparator);

        // no indexes built due to withBuildIndexes set to false
        assertFalse(indexDescriptor.isPerColumnIndexBuildComplete(new IndexIdentifier(keyspace, table, "idx1")));
        assertFalse(indexDescriptor.isPerColumnIndexBuildComplete(new IndexIdentifier(keyspace, table, "idx2")));
    }

    @Test
    public void testWritingVectorData() throws Exception
    {
        testWritingVectorData(CQL3Type.Native.FLOAT, FloatType.instance, (i) -> (float) i, (i, vector) -> {
            assertThat(vector).allMatch(val -> val instanceof Float);
            assertThat(vector).allMatch(val -> (float) val == (float) i);
        });

        perTestSetup();

        testWritingVectorData(CQL3Type.Native.DATE, SimpleDateType.instance, LocalDate::fromDaysSinceEpoch, (i, vector) -> {
            assertThat(vector).allMatch(val -> val instanceof Integer);
            assertThat(vector).allMatch(val -> {
                int days = (int) val - Integer.MIN_VALUE; // signed to unsigned conversion
                return days == i;
            });
        });

        perTestSetup();

        testWritingVectorData(CQL3Type.Native.TIME, TimeType.instance, (i) -> (long) i, (i, vector) -> {
            assertThat(vector).allMatch(val -> val instanceof Long);
            assertThat(vector).allMatch(val -> (long) val == (long) i);
        });
    }

    private void testWritingVectorData(CQL3Type.Native cqlType, AbstractType<?> subType, Function<Integer, ?> valueFactory,
                                       BiConsumer<Integer, List<?>> checkFunction) throws Exception
    {
        final int dimensions = 5;
        final String schema = "CREATE TABLE " + qualifiedTable + " ("
                              + "  k int,"
                              + "  v1 VECTOR<" + cqlType.name() + ", " + dimensions + ">,"
                              + "  PRIMARY KEY (k)"
                              + ")";

        CQLSSTableWriter writer = CQLSSTableWriter.builder()
                                                  .inDirectory(dataDir)
                                                  .forTable(schema)
                                                  .using("INSERT INTO " + keyspace + "." + table + " (k, v1) " +
                                                         "VALUES (?, ?)").build();

        for (int i = 0; i < 100; i++)
        {
            List<Object> vector = new ArrayList<>(dimensions);
            for (int j = 0; j < dimensions; j++)
            {
                vector.add(valueFactory.apply(i));
            }
            writer.addRow(i, vector);
        }

        writer.close();
        loadSSTables(dataDir, keyspace, table);

        if (verifyDataAfterLoading)
        {
            UntypedResultSet resultSet = QueryProcessor.executeInternal("SELECT * FROM " + keyspace + "." + table);

            assertEquals(resultSet.size(), 100);
            int cnt = 0;
            for (UntypedResultSet.Row row : resultSet)
            {
                assertEquals(cnt, row.getInt("k"));
                List<?> vector = row.getVector("v1", subType, dimensions);
                assertThat(vector).hasSize(dimensions);
                checkFunction.accept(cnt, vector);
                cnt++;
            }
        }
    }

    @Test
    public void testConstraintViolation() throws Exception
    {
        final String schema = "CREATE TABLE " + qualifiedTable + " ("
                              + "  k int,"
                              + "  v1 int CHECK v1 < 5 ,"
                              + "  PRIMARY KEY (k)"
                              + ")";

        CQLSSTableWriter writer = CQLSSTableWriter.builder()
                                                  .inDirectory(dataDir)
                                                  .forTable(schema)
                                                  .using("INSERT INTO " + keyspace + "." + table + " (k, v1) " +
                                                         "VALUES (?, ?)").build();

        writer.addRow(1, 4);

        assertThatThrownBy(() -> writer.addRow(2, 11))
        .describedAs("Should throw when adding a row that violates constraints")
        .isInstanceOf(ConstraintViolationException.class)
        .hasMessageContaining("Column value does not satisfy value constraint for column 'v1'. It should be v1 < 5");

        writer.close();
        loadSSTables(dataDir, keyspace, table);

        if (verifyDataAfterLoading)
        {
            UntypedResultSet resultSet = QueryProcessor.executeInternal("SELECT * FROM " + keyspace + "." + table);

            assertEquals(resultSet.size(), 1);
            UntypedResultSet.Row row = resultSet.one();
            assertEquals(1, row.getInt("k"));
            assertEquals(4, row.getInt("v1"));
        }
    }

    @Test
    public void testWritingWithZstdDictionaryWhenUsingInvalidCompressor()
    {
        // the compressor is not dictionary-aware so we will fail
        final String schema = "CREATE TABLE " + qualifiedTable + " ("
                              + "  k int,"
                              + "  v1 text,"
                              + "  PRIMARY KEY (k)"
                              + ") WITH compression = {'class': 'ZstdCompressor'}";

        assertThatThrownBy(() -> CQLSSTableWriter.builder()
                                                 .inDirectory(dataDir)
                                                 .forTable(schema)
                                                 .using("INSERT INTO " + keyspace + '.' + table + " (k, v1) VALUES (?, ?)")
                                                 // does not matter, we will fail anyway
                                                 .withCompressionDictionary(new ZstdCompressionDictionary(new DictId(ZSTD, 1), new byte[0]))
                                                 .build())
        .hasMessage("Table's compressor can not accept any dictionary: {chunk_length_in_kb=16, class=org.apache.cassandra.io.compress.ZstdCompressor}")
        .isInstanceOf(IllegalStateException.class);
    }

    @Test
    public void testWritingWithZstdDictionary() throws Exception
    {
        final String schema = "CREATE TABLE " + qualifiedTable + " ("
                              + "  k int,"
                              + "  v1 text,"
                              + "  PRIMARY KEY (k)"
                              + ") WITH compression = {'class': 'ZstdDictionaryCompressor'}";

        CompressionDictionary dictionary = CompressionDictionaryHelper.INSTANCE.trainDictionary(keyspace, table);

        CQLSSTableWriter writer = CQLSSTableWriter.builder()
                                                  .inDirectory(dataDir)
                                                  .forTable(schema)
                                                  .using("INSERT INTO " + keyspace + '.' + table + " (k, v1) VALUES (?, ?)")
                                                  .withCompressionDictionary(dictionary)
                                                  .build();

        for (int i = 0; i < 500; i++)
        {
            writer.addRow(i, CompressionDictionaryHelper.INSTANCE.getRandomSample());
        }

        writer.close();

        loadSSTables(dataDir, keyspace, table);

        if (verifyDataAfterLoading)
        {
            UntypedResultSet resultSet = QueryProcessor.executeInternal("SELECT * FROM " + qualifiedTable);
            assertNotNull(resultSet);
            Iterator<UntypedResultSet.Row> iter = resultSet.iterator();
            for (int i = 0; i < 500; i++)
            {
                UntypedResultSet.Row row = iter.next();
                assertEquals(i, row.getInt("k"));
                assertNotNull(row.getString("v1"));
            }
        }
    }

    protected static void loadSSTables(File dataDir, final String ks, final String tb) throws ExecutionException, InterruptedException
    {
        SSTableLoader loader = new SSTableLoader(dataDir, new SSTableLoader.Client()
        {
            private String keyspace;

            @Override
            public void init(String keyspace)
            {
                this.keyspace = keyspace;

                KeyspaceMetadata keyspaceMetadata = Schema.instance.getKeyspaceMetadata(keyspace);

                RangesAtEndpoint addressReplicas = keyspaceMetadata.replicationStrategy.getAddressReplicas(ClusterMetadata.current(), FBUtilities.getBroadcastAddressAndPort());

                for (Range<Token> range : addressReplicas.ranges())
                    addRangeForEndpoint(range, FBUtilities.getBroadcastAddressAndPort());
            }

            @Override
            public TableMetadataRef getTableMetadata(String tableName)
            {
                KeyspaceMetadata keyspaceMetadata = ClusterMetadata.current().schema.getKeyspaceMetadata(keyspace);
                TableMetadata tableMetadata = keyspaceMetadata.tables.getNullable(tableName);
                assert tableMetadata != null;
                return tableMetadata.ref;
            }
        }, new OutputHandler.SystemOutput(false, false), 1, ks, tb);

        loader.stream().get();
    }

    private class WriterThread extends Thread
    {
        private final File dataDir;
        private final int id;
        private final String qualifiedTable;
        public volatile Exception exception;

        public WriterThread(File dataDir, int id, String qualifiedTable)
        {
            this.dataDir = dataDir;
            this.id = id;
            this.qualifiedTable = qualifiedTable;
        }

        @Override
        public void run()
        {
            String schema = "CREATE TABLE " + qualifiedTable + " ("
                            + "  k int,"
                            + "  v int,"
                            + "  PRIMARY KEY (k, v)"
                            + ")";
            String insert = "INSERT INTO " + qualifiedTable + " (k, v) VALUES (?, ?)";
            CQLSSTableWriter writer = CQLSSTableWriter.builder()
                                                      .inDirectory(dataDir)
                                                      .forTable(schema)
                                                      .using(insert).build();

            try
            {
                for (int i = 0; i < NUMBER_WRITES_IN_RUNNABLE; i++)
                {
                    writer.addRow(id, i);
                }
                writer.close();
            }
            catch (Exception e)
            {
                exception = e;
            }
        }
    }
}
