@Test
  public void testGetSliceFromSuperBasic() throws Throwable {
    // tests slicing against data from one row spread across two sstables
    final Table table = Table.open("Keyspace1");
    final ColumnFamilyStore cfStore = table.getColumnFamilyStore("Super1");
    final String ROW = "row2";

    RowMutation rm = new RowMutation("Keyspace1", ROW);
    ColumnFamily cf = ColumnFamily.create("Keyspace1", "Super1");
    SuperColumn sc = new SuperColumn("sc1".getBytes(), new LongType());
    sc.addColumn(new Column(getBytes(1), "val1".getBytes(), 1L));
    cf.addColumn(sc);
    rm.add(cf);
    rm.apply();

    Runnable verify =
        new WrappedRunnable() {
          public void runMayThrow() throws Exception {
            ColumnFamily cf =
                cfStore.getColumnFamily(
                    ROW,
                    new QueryPath("Super1"),
                    ArrayUtils.EMPTY_BYTE_ARRAY,
                    ArrayUtils.EMPTY_BYTE_ARRAY,
                    false,
                    10);
            assertColumns(cf, "sc1");
            assertEquals(
                new String(cf.getColumn("sc1".getBytes()).getSubColumn(getBytes(1)).value()),
                "val1");
          }
        };

    reTest(table.getColumnFamilyStore("Standard1"), verify);
  }
  @Test
  public void testGetRowSingleColumn() throws Throwable {
    final Table table = Table.open("Keyspace1");
    final ColumnFamilyStore cfStore = table.getColumnFamilyStore("Standard1");

    RowMutation rm = new RowMutation("Keyspace1", TEST_KEY);
    ColumnFamily cf = ColumnFamily.create("Keyspace1", "Standard1");
    cf.addColumn(column("col1", "val1", 1L));
    cf.addColumn(column("col2", "val2", 1L));
    cf.addColumn(column("col3", "val3", 1L));
    rm.add(cf);
    rm.apply();

    Runnable verify =
        new WrappedRunnable() {
          public void runMayThrow() throws Exception {
            ColumnFamily cf;

            cf =
                cfStore.getColumnFamily(
                    new NamesQueryFilter(TEST_KEY, new QueryPath("Standard1"), "col1".getBytes()));
            assertColumns(cf, "col1");

            cf =
                cfStore.getColumnFamily(
                    new NamesQueryFilter(TEST_KEY, new QueryPath("Standard1"), "col3".getBytes()));
            assertColumns(cf, "col3");
          }
        };
    reTest(table.getColumnFamilyStore("Standard1"), verify);
  }
  @Test
  public void testGetSliceFromLarge() throws Throwable {
    // tests slicing against 1000 columns in an sstable
    Table table = Table.open("Keyspace1");
    ColumnFamilyStore cfStore = table.getColumnFamilyStore("Standard1");
    String key = "row3";
    RowMutation rm = new RowMutation("Keyspace1", key);
    ColumnFamily cf = ColumnFamily.create("Keyspace1", "Standard1");
    for (int i = 1000; i < 2000; i++) cf.addColumn(column("col" + i, ("v" + i), 1L));
    rm.add(cf);
    rm.apply();
    cfStore.forceBlockingFlush();

    validateSliceLarge(cfStore);
    // compact so we have a big row with more than the minimum index count
    if (cfStore.getSSTables().size() > 1) {
      CompactionManager.instance.submitMajor(cfStore).get();
    }
    SSTableReader sstable = cfStore.getSSTables().iterator().next();
    DecoratedKey decKey = sstable.getPartitioner().decorateKey(key);
    SSTable.PositionSize info = sstable.getPosition(decKey);
    BufferedRandomAccessFile file = new BufferedRandomAccessFile(sstable.getFilename(), "r");
    file.seek(info.position);
    assert file.readUTF().equals(key);
    file.readInt();
    IndexHelper.skipBloomFilter(file);
    ArrayList<IndexHelper.IndexInfo> indexes = IndexHelper.deserializeIndex(file);
    assert indexes.size() > 2;
    validateSliceLarge(cfStore);
  }
  @Test
  public void testGetRowSliceByRange() throws Throwable {
    String key = TEST_KEY + "slicerow";
    Table table = Table.open("Keyspace1");
    ColumnFamilyStore cfStore = table.getColumnFamilyStore("Standard1");
    RowMutation rm = new RowMutation("Keyspace1", key);
    ColumnFamily cf = ColumnFamily.create("Keyspace1", "Standard1");
    // First write "a", "b", "c"
    cf.addColumn(column("a", "val1", 1L));
    cf.addColumn(column("b", "val2", 1L));
    cf.addColumn(column("c", "val3", 1L));
    rm.add(cf);
    rm.apply();

    cf =
        cfStore.getColumnFamily(
            key, new QueryPath("Standard1"), "b".getBytes(), "c".getBytes(), false, 100);
    assertEquals(2, cf.getColumnCount());

    cf =
        cfStore.getColumnFamily(
            key, new QueryPath("Standard1"), "b".getBytes(), "b".getBytes(), false, 100);
    assertEquals(1, cf.getColumnCount());

    cf =
        cfStore.getColumnFamily(
            key, new QueryPath("Standard1"), "b".getBytes(), "c".getBytes(), false, 1);
    assertEquals(1, cf.getColumnCount());

    cf =
        cfStore.getColumnFamily(
            key, new QueryPath("Standard1"), "c".getBytes(), "b".getBytes(), false, 1);
    assertNull(cf);
  }
  @Test
  public void testGetSliceFromAdvanced() throws Throwable {
    // tests slicing against data from one row spread across two sstables
    final Table table = Table.open("Keyspace1");
    final ColumnFamilyStore cfStore = table.getColumnFamilyStore("Standard1");
    final String ROW = "row2";

    RowMutation rm = new RowMutation("Keyspace1", ROW);
    ColumnFamily cf = ColumnFamily.create("Keyspace1", "Standard1");
    cf.addColumn(column("col1", "val1", 1L));
    cf.addColumn(column("col2", "val2", 1L));
    cf.addColumn(column("col3", "val3", 1L));
    cf.addColumn(column("col4", "val4", 1L));
    cf.addColumn(column("col5", "val5", 1L));
    cf.addColumn(column("col6", "val6", 1L));
    rm.add(cf);
    rm.apply();
    cfStore.forceBlockingFlush();

    rm = new RowMutation("Keyspace1", ROW);
    cf = ColumnFamily.create("Keyspace1", "Standard1");
    cf.addColumn(column("col1", "valx", 2L));
    cf.addColumn(column("col2", "valx", 2L));
    cf.addColumn(column("col3", "valx", 2L));
    rm.add(cf);
    rm.apply();

    Runnable verify =
        new WrappedRunnable() {
          public void runMayThrow() throws Exception {
            ColumnFamily cf;

            cf =
                cfStore.getColumnFamily(
                    ROW,
                    new QueryPath("Standard1"),
                    "col2".getBytes(),
                    ArrayUtils.EMPTY_BYTE_ARRAY,
                    false,
                    3);
            assertColumns(cf, "col2", "col3", "col4");
            assertEquals(new String(cf.getColumn("col2".getBytes()).value()), "valx");
            assertEquals(new String(cf.getColumn("col3".getBytes()).value()), "valx");
            assertEquals(new String(cf.getColumn("col4".getBytes()).value()), "val4");
          }
        };

    reTest(table.getColumnFamilyStore("Standard1"), verify);
  }
  @Test
  public void testGetSliceNoMatch() throws Throwable {
    Table table = Table.open("Keyspace1");
    RowMutation rm = new RowMutation("Keyspace1", "row1000");
    ColumnFamily cf = ColumnFamily.create("Keyspace1", "Standard2");
    cf.addColumn(column("col1", "val1", 1));
    rm.add(cf);
    rm.apply();

    validateGetSliceNoMatch(table);
    table.getColumnFamilyStore("Standard2").forceBlockingFlush();
    validateGetSliceNoMatch(table);

    Collection<SSTableReader> ssTables = table.getColumnFamilyStore("Standard2").getSSTables();
    assertEquals(1, ssTables.size());
    ssTables.iterator().next().forceBloomFilterFailures();
    validateGetSliceNoMatch(table);
  }
  @Test
  public void testGetRowNoColumns() throws Throwable {
    final Table table = Table.open("Keyspace2");
    final ColumnFamilyStore cfStore = table.getColumnFamilyStore("Standard3");

    RowMutation rm = new RowMutation("Keyspace2", TEST_KEY);
    ColumnFamily cf = ColumnFamily.create("Keyspace2", "Standard3");
    cf.addColumn(column("col1", "val1", 1L));
    rm.add(cf);
    rm.apply();

    Runnable verify =
        new WrappedRunnable() {
          public void runMayThrow() throws Exception {
            ColumnFamily cf;

            cf =
                cfStore.getColumnFamily(
                    new NamesQueryFilter(
                        TEST_KEY, new QueryPath("Standard3"), new TreeSet<byte[]>()));
            assertColumns(cf);

            cf =
                cfStore.getColumnFamily(
                    new SliceQueryFilter(
                        TEST_KEY,
                        new QueryPath("Standard3"),
                        ArrayUtils.EMPTY_BYTE_ARRAY,
                        ArrayUtils.EMPTY_BYTE_ARRAY,
                        false,
                        0));
            assertColumns(cf);

            cf =
                cfStore.getColumnFamily(
                    new NamesQueryFilter(TEST_KEY, new QueryPath("Standard3"), "col99".getBytes()));
            assertColumns(cf);
          }
        };
    reTest(table.getColumnFamilyStore("Standard3"), verify);
  }
  @Test
  public void testGetSliceFromBasic() throws Throwable {
    // tests slicing against data from one row in a memtable and then flushed to an sstable
    final Table table = Table.open("Keyspace1");
    final ColumnFamilyStore cfStore = table.getColumnFamilyStore("Standard1");
    final String ROW = "row1";

    RowMutation rm = new RowMutation("Keyspace1", ROW);
    ColumnFamily cf = ColumnFamily.create("Keyspace1", "Standard1");
    cf.addColumn(column("col1", "val1", 1L));
    cf.addColumn(column("col3", "val3", 1L));
    cf.addColumn(column("col4", "val4", 1L));
    cf.addColumn(column("col5", "val5", 1L));
    cf.addColumn(column("col7", "val7", 1L));
    cf.addColumn(column("col9", "val9", 1L));
    rm.add(cf);
    rm.apply();

    rm = new RowMutation("Keyspace1", ROW);
    rm.delete(new QueryPath("Standard1", null, "col4".getBytes()), 2L);
    rm.apply();

    Runnable verify =
        new WrappedRunnable() {
          public void runMayThrow() throws Exception {
            ColumnFamily cf;

            cf =
                cfStore.getColumnFamily(
                    ROW,
                    new QueryPath("Standard1"),
                    "col5".getBytes(),
                    ArrayUtils.EMPTY_BYTE_ARRAY,
                    false,
                    2);
            assertColumns(cf, "col5", "col7");

            cf =
                cfStore.getColumnFamily(
                    ROW,
                    new QueryPath("Standard1"),
                    "col4".getBytes(),
                    ArrayUtils.EMPTY_BYTE_ARRAY,
                    false,
                    2);
            assertColumns(cf, "col4", "col5", "col7");
            assertColumns(ColumnFamilyStore.removeDeleted(cf, Integer.MAX_VALUE), "col5", "col7");

            cf =
                cfStore.getColumnFamily(
                    ROW,
                    new QueryPath("Standard1"),
                    "col5".getBytes(),
                    ArrayUtils.EMPTY_BYTE_ARRAY,
                    true,
                    2);
            assertColumns(cf, "col3", "col4", "col5");

            cf =
                cfStore.getColumnFamily(
                    ROW,
                    new QueryPath("Standard1"),
                    "col6".getBytes(),
                    ArrayUtils.EMPTY_BYTE_ARRAY,
                    true,
                    2);
            assertColumns(cf, "col3", "col4", "col5");

            cf =
                cfStore.getColumnFamily(
                    ROW,
                    new QueryPath("Standard1"),
                    ArrayUtils.EMPTY_BYTE_ARRAY,
                    ArrayUtils.EMPTY_BYTE_ARRAY,
                    true,
                    2);
            assertColumns(cf, "col7", "col9");

            cf =
                cfStore.getColumnFamily(
                    ROW,
                    new QueryPath("Standard1"),
                    "col95".getBytes(),
                    ArrayUtils.EMPTY_BYTE_ARRAY,
                    false,
                    2);
            assertColumns(cf);

            cf =
                cfStore.getColumnFamily(
                    ROW,
                    new QueryPath("Standard1"),
                    "col0".getBytes(),
                    ArrayUtils.EMPTY_BYTE_ARRAY,
                    true,
                    2);
            assertColumns(cf);
          }
        };

    reTest(table.getColumnFamilyStore("Standard1"), verify);
  }
  @Test
  public void testGetSliceWithCutoff() throws Throwable {
    // tests slicing against data from one row in a memtable and then flushed to an sstable
    final Table table = Table.open("Keyspace1");
    final ColumnFamilyStore cfStore = table.getColumnFamilyStore("Standard1");
    final String ROW = "row4";
    final NumberFormat fmt = new DecimalFormat("000");

    RowMutation rm = new RowMutation("Keyspace1", ROW);
    ColumnFamily cf = ColumnFamily.create("Keyspace1", "Standard1");
    // at this rate, we're getting 78-79 cos/block, assuming the blocks are set to be about 4k.
    // so if we go to 300, we'll get at least 4 blocks, which is plenty for testing.
    for (int i = 0; i < 300; i++)
      cf.addColumn(column("col" + fmt.format(i), "omg!thisisthevalue!" + i, 1L));
    rm.add(cf);
    rm.apply();

    Runnable verify =
        new WrappedRunnable() {
          public void runMayThrow() throws Exception {
            ColumnFamily cf;

            // blocks are partitioned like this: 000-097, 098-193, 194-289, 290-299, assuming a 4k
            // column index size.
            assert DatabaseDescriptor.getColumnIndexSize() == 4096
                : "Unexpected column index size, block boundaries won't be where tests expect them.";

            // test forward, spanning a segment.
            cf =
                cfStore.getColumnFamily(
                    ROW,
                    new QueryPath("Standard1"),
                    "col096".getBytes(),
                    "col099".getBytes(),
                    false,
                    4);
            assertColumns(cf, "col096", "col097", "col098", "col099");

            // test reversed, spanning a segment.
            cf =
                cfStore.getColumnFamily(
                    ROW,
                    new QueryPath("Standard1"),
                    "col099".getBytes(),
                    "col096".getBytes(),
                    true,
                    4);
            assertColumns(cf, "col096", "col097", "col098", "col099");

            // test forward, within a segment.
            cf =
                cfStore.getColumnFamily(
                    ROW,
                    new QueryPath("Standard1"),
                    "col100".getBytes(),
                    "col103".getBytes(),
                    false,
                    4);
            assertColumns(cf, "col100", "col101", "col102", "col103");

            // test reversed, within a segment.
            cf =
                cfStore.getColumnFamily(
                    ROW,
                    new QueryPath("Standard1"),
                    "col103".getBytes(),
                    "col100".getBytes(),
                    true,
                    4);
            assertColumns(cf, "col100", "col101", "col102", "col103");

            // test forward from beginning, spanning a segment.
            String[] strCols = new String[100]; // col000-col099
            for (int i = 0; i < 100; i++) strCols[i] = "col" + fmt.format(i);
            cf =
                cfStore.getColumnFamily(
                    ROW,
                    new QueryPath("Standard1"),
                    "".getBytes(),
                    "col099".getBytes(),
                    false,
                    100);
            assertColumns(cf, strCols);

            // test reversed, from end, spanning a segment.
            cf =
                cfStore.getColumnFamily(
                    ROW, new QueryPath("Standard1"), "".getBytes(), "col288".getBytes(), true, 12);
            assertColumns(
                cf, "col288", "col289", "col290", "col291", "col292", "col293", "col294", "col295",
                "col296", "col297", "col298", "col299");
          }
        };

    reTest(table.getColumnFamilyStore("Standard1"), verify);
  }