Examples with SchemaBuilder org.apache.drill.test.rowSet.schema.SchemaBuilder used on opensource projects

Example 41 with SchemaBuilder

use of org.apache.drill.test.rowSet.schema.SchemaBuilder in project drill by axbaretto.

the class TestResultSetLoaderOverflow method testSizeLimitOnArray.

/**
 * Test a row with a single array column which overflows. Verifies
 * that all the fiddly bits about offset vectors and so on works
 * correctly. Run this test (the simplest case) if you change anything
 * about the array handling code.
 */
@Test
public void testSizeLimitOnArray() {
    TupleMetadata schema = new SchemaBuilder().addArray("s", MinorType.VARCHAR).buildSchema();
    ResultSetOptions options = new OptionBuilder().setRowCountLimit(ValueVector.MAX_ROW_COUNT).setSchema(schema).build();
    ResultSetLoader rsLoader = new ResultSetLoaderImpl(fixture.allocator(), options);
    RowSetLoader rootWriter = rsLoader.writer();
    // Fill batch with rows of with a single array, three values each. Tack on
    // a suffix to each so we can be sure the proper data is written and moved
    // to the overflow batch.
    rsLoader.startBatch();
    byte[] value = new byte[473];
    Arrays.fill(value, (byte) 'X');
    String strValue = new String(value, Charsets.UTF_8);
    int count = 0;
    int rowSize = 0;
    int totalSize = 0;
    int valuesPerArray = 13;
    while (rootWriter.start()) {
        totalSize += rowSize;
        rowSize = 0;
        ScalarWriter array = rootWriter.array(0).scalar();
        for (int i = 0; i < valuesPerArray; i++) {
            String cellValue = strValue + (count + 1) + "." + i;
            array.setString(cellValue);
            rowSize += cellValue.length();
        }
        rootWriter.save();
        count++;
    }
    // Row count should include the overflow row.
    int expectedCount = count - 1;
    // Size without overflow row should fit in the vector, size
    // with overflow should not.
    assertTrue(totalSize <= ValueVector.MAX_BUFFER_SIZE);
    assertTrue(totalSize + rowSize > ValueVector.MAX_BUFFER_SIZE);
    // Result should exclude the overflow row. Last row
    // should hold the last full array.
    RowSet result = fixture.wrap(rsLoader.harvest());
    assertEquals(expectedCount, result.rowCount());
    RowSetReader reader = result.reader();
    reader.set(expectedCount - 1);
    ScalarElementReader arrayReader = reader.column(0).elements();
    assertEquals(valuesPerArray, arrayReader.size());
    for (int i = 0; i < valuesPerArray; i++) {
        String cellValue = strValue + (count - 1) + "." + i;
        assertEquals(cellValue, arrayReader.getString(i));
    }
    result.clear();
    // Next batch should start with the overflow row.
    // The only row in this next batch should be the whole
    // array being written at the time of overflow.
    rsLoader.startBatch();
    // VectorPrinter.printStrings((VarCharVector) ((VarCharColumnWriter) rootWriter.array(0).scalar()).vector(), 0, 5);
    // ((ResultSetLoaderImpl) rsLoader).dump(new HierarchicalPrinter());
    assertEquals(1, rootWriter.rowCount());
    assertEquals(expectedCount + 1, rsLoader.totalRowCount());
    result = fixture.wrap(rsLoader.harvest());
    // VectorPrinter.printStrings((VarCharVector) ((VarCharColumnWriter) rootWriter.array(0).scalar()).vector(), 0, 5);
    assertEquals(1, result.rowCount());
    reader = result.reader();
    reader.next();
    arrayReader = reader.column(0).elements();
    assertEquals(valuesPerArray, arrayReader.size());
    for (int i = 0; i < valuesPerArray; i++) {
        String cellValue = strValue + (count) + "." + i;
        assertEquals(cellValue, arrayReader.getString(i));
    }
    result.clear();
    rsLoader.close();
}

Example 42 with SchemaBuilder

use of org.apache.drill.test.rowSet.schema.SchemaBuilder in project drill by axbaretto.

the class TestResultSetLoaderOverflow method testCloseWithOverflow.

/**
 * Load a batch to overflow. Then, close the loader with the overflow
 * batch unharvested. The Loader should release the memory allocated
 * to the unused overflow vectors.
 */
@Test
public void testCloseWithOverflow() {
    TupleMetadata schema = new SchemaBuilder().add("s", MinorType.VARCHAR).buildSchema();
    ResultSetOptions options = new OptionBuilder().setRowCountLimit(ValueVector.MAX_ROW_COUNT).setSchema(schema).build();
    ResultSetLoader rsLoader = new ResultSetLoaderImpl(fixture.allocator(), options);
    RowSetLoader rootWriter = rsLoader.writer();
    rsLoader.startBatch();
    byte[] value = new byte[512];
    Arrays.fill(value, (byte) 'X');
    int count = 0;
    while (!rootWriter.isFull()) {
        rootWriter.start();
        rootWriter.scalar(0).setBytes(value, value.length);
        rootWriter.save();
        count++;
    }
    assertTrue(count < ValueVector.MAX_ROW_COUNT);
    // Harvest the full batch
    RowSet result = fixture.wrap(rsLoader.harvest());
    result.clear();
    // Close without harvesting the overflow batch.
    rsLoader.close();
}

Example 43 with SchemaBuilder

use of org.apache.drill.test.rowSet.schema.SchemaBuilder in project drill by axbaretto.

the class TestResultSetLoaderProtocol method testOverwriteRow.

/**
 * The writer protocol allows a client to write to a row any number of times
 * before invoking <tt>save()</tt>. In this case, each new value simply
 * overwrites the previous value. Here, we test the most basic case: a simple,
 * flat tuple with no arrays. We use a very large Varchar that would, if
 * overwrite were not working, cause vector overflow.
 * <p>
 * The ability to overwrite rows is seldom needed except in one future use
 * case: writing a row, then applying a filter "in-place" to discard unwanted
 * rows, without having to send the row downstream.
 * <p>
 * Because of this use case, specific rules apply when discarding row or
 * overwriting values.
 * <ul>
 * <li>Values can be written once per row. Fixed-width columns actually allow
 * multiple writes. But, because of the way variable-width columns work,
 * multiple writes will cause undefined results.</li>
 * <li>To overwrite a row, call <tt>start()</tt> without calling
 * <tt>save()</tt> on the previous row. Doing so ignores data for the
 * previous row and starts a new row in place of the old one.</li>
 * </ul>
 * Note that there is no explicit method to discard a row. Instead,
 * the rule is that a row is not saved until <tt>save()</tt> is called.
 */
@Test
public void testOverwriteRow() {
    TupleMetadata schema = new SchemaBuilder().add("a", MinorType.INT).add("b", MinorType.VARCHAR).buildSchema();
    ResultSetLoaderImpl.ResultSetOptions options = new OptionBuilder().setSchema(schema).setRowCountLimit(ValueVector.MAX_ROW_COUNT).build();
    ResultSetLoader rsLoader = new ResultSetLoaderImpl(fixture.allocator(), options);
    RowSetLoader rootWriter = rsLoader.writer();
    // Can't use the shortcut to populate rows when doing overwrites.
    ScalarWriter aWriter = rootWriter.scalar("a");
    ScalarWriter bWriter = rootWriter.scalar("b");
    // Write 100,000 rows, overwriting 99% of them. This will cause vector
    // overflow and data corruption if overwrite does not work; but will happily
    // produce the correct result if everything works as it should.
    byte[] value = new byte[512];
    Arrays.fill(value, (byte) 'X');
    int count = 0;
    rsLoader.startBatch();
    while (count < 100_000) {
        rootWriter.start();
        count++;
        aWriter.setInt(count);
        bWriter.setBytes(value, value.length);
        if (count % 100 == 0) {
            rootWriter.save();
        }
    }
    // Verify using a reader.
    RowSet result = fixture.wrap(rsLoader.harvest());
    assertEquals(count / 100, result.rowCount());
    RowSetReader reader = result.reader();
    int rowId = 1;
    while (reader.next()) {
        assertEquals(rowId * 100, reader.scalar("a").getInt());
        assertTrue(Arrays.equals(value, reader.scalar("b").getBytes()));
        rowId++;
    }
    result.clear();
    rsLoader.close();
}

Example 44 with SchemaBuilder

use of org.apache.drill.test.rowSet.schema.SchemaBuilder in project drill by axbaretto.

the class TestResultSetLoaderProtocol method testInitialSchema.

/**
 * Provide a schema up front to the loader; schema is built before
 * the first row.
 * <p>
 * Also verifies the test-time method to set a row of values using
 * a single method.
 */
@Test
public void testInitialSchema() {
    TupleMetadata schema = new SchemaBuilder().add("a", MinorType.INT).addNullable("b", MinorType.INT).add("c", MinorType.VARCHAR).buildSchema();
    ResultSetLoaderImpl.ResultSetOptions options = new OptionBuilder().setSchema(schema).build();
    ResultSetLoader rsLoader = new ResultSetLoaderImpl(fixture.allocator(), options);
    RowSetLoader rootWriter = rsLoader.writer();
    rsLoader.startBatch();
    rootWriter.addRow(10, 100, "fred").addRow(20, null, "barney").addRow(30, 300, "wilma");
    RowSet actual = fixture.wrap(rsLoader.harvest());
    RowSet expected = fixture.rowSetBuilder(schema).addRow(10, 100, "fred").addRow(20, null, "barney").addRow(30, 300, "wilma").build();
    new RowSetComparison(expected).verifyAndClearAll(actual);
    rsLoader.close();
}

Example 45 with SchemaBuilder

use of org.apache.drill.test.rowSet.schema.SchemaBuilder in project drill by axbaretto.

the class TestResultSetLoaderProtocol method testCloseWithoutHarvest.

/**
 * Test that memory is released if the loader is closed with an active
 * batch (that is, before the batch is harvested.)
 */
@Test
public void testCloseWithoutHarvest() {
    TupleMetadata schema = new SchemaBuilder().add("a", MinorType.INT).add("b", MinorType.VARCHAR).buildSchema();
    ResultSetLoaderImpl.ResultSetOptions options = new OptionBuilder().setSchema(schema).setRowCountLimit(ValueVector.MAX_ROW_COUNT).build();
    ResultSetLoader rsLoader = new ResultSetLoaderImpl(fixture.allocator(), options);
    RowSetLoader rootWriter = rsLoader.writer();
    rsLoader.startBatch();
    for (int i = 0; i < 100; i++) {
        rootWriter.start();
        rootWriter.scalar("a").setInt(i);
        rootWriter.scalar("b").setString("b-" + i);
        rootWriter.save();
    }
    // Don't harvest the batch. Allocator will complain if the
    // loader does not release memory.
    rsLoader.close();
}