Examples with RowSetReader org.apache.drill.exec.physical.rowSet.RowSetReader used on opensource projects

Example 1 with RowSetReader

use of org.apache.drill.exec.physical.rowSet.RowSetReader in project drill by apache.

the class TestResultSetLoaderRepeatedList method test2DOverflow.

@Test
public void test2DOverflow() {
    final TupleMetadata schema = new SchemaBuilder().add("id", MinorType.INT).addRepeatedList("list2").addArray(MinorType.VARCHAR).resumeSchema().buildSchema();
    final ResultSetLoaderImpl.ResultSetOptions options = new ResultSetOptionBuilder().rowCountLimit(ValueVector.MAX_ROW_COUNT).readerSchema(schema).build();
    final ResultSetLoader rsLoader = new ResultSetLoaderImpl(fixture.allocator(), options);
    final RowSetLoader writer = rsLoader.writer();
    // Fill the batch with enough data to cause overflow.
    // Data must be large enough to cause overflow before 64K rows
    // Make a bit bigger to overflow early.
    final int outerSize = 7;
    final int innerSize = 5;
    final int strLength = ValueVector.MAX_BUFFER_SIZE / ValueVector.MAX_ROW_COUNT / outerSize / innerSize + 20;
    final byte[] value = new byte[strLength - 6];
    Arrays.fill(value, (byte) 'X');
    final String strValue = new String(value, Charsets.UTF_8);
    int rowCount = 0;
    int elementCount = 0;
    final ArrayWriter outerWriter = writer.array(1);
    final ArrayWriter innerWriter = outerWriter.array();
    final ScalarWriter elementWriter = innerWriter.scalar();
    rsLoader.startBatch();
    while (!writer.isFull()) {
        writer.start();
        writer.scalar(0).setInt(rowCount);
        for (int j = 0; j < outerSize; j++) {
            for (int k = 0; k < innerSize; k++) {
                elementWriter.setString(String.format("%s%06d", strValue, elementCount));
                elementCount++;
            }
            outerWriter.save();
        }
        writer.save();
        rowCount++;
    }
    // Number of rows should be driven by vector size.
    // Our row count should include the overflow row
    final int expectedCount = ValueVector.MAX_BUFFER_SIZE / (strLength * innerSize * outerSize);
    assertEquals(expectedCount + 1, rowCount);
    // Loader's row count should include only "visible" rows
    assertEquals(expectedCount, writer.rowCount());
    // Total count should include invisible and look-ahead rows.
    assertEquals(expectedCount + 1, rsLoader.totalRowCount());
    // Result should exclude the overflow row
    RowSet result = fixture.wrap(rsLoader.harvest());
    assertEquals(expectedCount, result.rowCount());
    // Verify the data.
    RowSetReader reader = result.reader();
    ArrayReader outerReader = reader.array(1);
    ArrayReader innerReader = outerReader.array();
    ScalarReader strReader = innerReader.scalar();
    int readRowCount = 0;
    int readElementCount = 0;
    while (reader.next()) {
        assertEquals(readRowCount, reader.scalar(0).getInt());
        for (int i = 0; i < outerSize; i++) {
            assertTrue(outerReader.next());
            for (int j = 0; j < innerSize; j++) {
                assertTrue(innerReader.next());
                assertEquals(String.format("%s%06d", strValue, readElementCount), strReader.getString());
                readElementCount++;
            }
            assertFalse(innerReader.next());
        }
        assertFalse(outerReader.next());
        readRowCount++;
    }
    assertEquals(readRowCount, result.rowCount());
    result.clear();
    // Write a few more rows to verify the overflow row.
    rsLoader.startBatch();
    for (int i = 0; i < 1000; i++) {
        writer.start();
        writer.scalar(0).setInt(rowCount);
        for (int j = 0; j < outerSize; j++) {
            for (int k = 0; k < innerSize; k++) {
                elementWriter.setString(String.format("%s%06d", strValue, elementCount));
                elementCount++;
            }
            outerWriter.save();
        }
        writer.save();
        rowCount++;
    }
    result = fixture.wrap(rsLoader.harvest());
    assertEquals(1001, result.rowCount());
    final int startCount = readRowCount;
    reader = result.reader();
    outerReader = reader.array(1);
    innerReader = outerReader.array();
    strReader = innerReader.scalar();
    while (reader.next()) {
        assertEquals(readRowCount, reader.scalar(0).getInt());
        for (int i = 0; i < outerSize; i++) {
            assertTrue(outerReader.next());
            for (int j = 0; j < innerSize; j++) {
                assertTrue(innerReader.next());
                elementWriter.setString(String.format("%s%06d", strValue, readElementCount));
                assertEquals(String.format("%s%06d", strValue, readElementCount), strReader.getString());
                readElementCount++;
            }
            assertFalse(innerReader.next());
        }
        assertFalse(outerReader.next());
        readRowCount++;
    }
    assertEquals(readRowCount - startCount, result.rowCount());
    result.clear();
    rsLoader.close();
}

Example 2 with RowSetReader

use of org.apache.drill.exec.physical.rowSet.RowSetReader in project drill by apache.

the class TestResultSetLoaderMapArray method testOmittedValues.

/**
 * Check that the "fill-empties" logic descends down into
 * a repeated map.
 */
@Test
public void testOmittedValues() {
    TupleMetadata schema = new SchemaBuilder().add("id", MinorType.INT).addMapArray("m").addNullable("a", MinorType.INT).addNullable("b", MinorType.VARCHAR).resumeSchema().buildSchema();
    ResultSetLoaderImpl.ResultSetOptions options = new ResultSetOptionBuilder().readerSchema(schema).rowCountLimit(ValueVector.MAX_ROW_COUNT).build();
    ResultSetLoader rsLoader = new ResultSetLoaderImpl(fixture.allocator(), options);
    RowSetLoader rootWriter = rsLoader.writer();
    int mapSkip = 5;
    int entrySkip = 3;
    int rowCount = 1000;
    int entryCount = 10;
    rsLoader.startBatch();
    ArrayWriter maWriter = rootWriter.array("m");
    TupleWriter mWriter = maWriter.tuple();
    for (int i = 0; i < rowCount; i++) {
        rootWriter.start();
        rootWriter.scalar(0).setInt(i);
        if (i % mapSkip != 0) {
            for (int j = 0; j < entryCount; j++) {
                if (j % entrySkip != 0) {
                    mWriter.scalar(0).setInt(i * entryCount + j);
                    mWriter.scalar(1).setString("b-" + i + "." + j);
                }
                maWriter.save();
            }
        }
        rootWriter.save();
    }
    RowSet result = fixture.wrap(rsLoader.harvest());
    assertEquals(rowCount, result.rowCount());
    RowSetReader reader = result.reader();
    ArrayReader maReader = reader.array("m");
    TupleReader mReader = maReader.tuple();
    for (int i = 0; i < rowCount; i++) {
        assertTrue(reader.next());
        assertEquals(i, reader.scalar(0).getInt());
        if (i % mapSkip == 0) {
            assertEquals(0, maReader.size());
            continue;
        }
        assertEquals(entryCount, maReader.size());
        for (int j = 0; j < entryCount; j++) {
            assertTrue(maReader.next());
            if (j % entrySkip == 0) {
                assertTrue(mReader.scalar(0).isNull());
                assertTrue(mReader.scalar(1).isNull());
            } else {
                assertFalse(mReader.scalar(0).isNull());
                assertFalse(mReader.scalar(1).isNull());
                assertEquals(i * entryCount + j, mReader.scalar(0).getInt());
                assertEquals("b-" + i + "." + j, mReader.scalar(1).getString());
            }
        }
    }
    result.clear();
    rsLoader.close();
}

Example 3 with RowSetReader

use of org.apache.drill.exec.physical.rowSet.RowSetReader in project drill by apache.

the class TestResultSetLoaderMapArray method testDoubleNestedArray.

/**
 * Test a doubly-nested array of maps.
 */
@Test
public void testDoubleNestedArray() {
    TupleMetadata schema = new SchemaBuilder().add("a", MinorType.INT).addMapArray("m1").add("b", MinorType.INT).addMapArray("m2").add("c", MinorType.INT).addArray("d", MinorType.VARCHAR).resumeMap().resumeSchema().buildSchema();
    ResultSetLoaderImpl.ResultSetOptions options = new ResultSetOptionBuilder().readerSchema(schema).build();
    ResultSetLoader rsLoader = new ResultSetLoaderImpl(fixture.allocator(), options);
    RowSetLoader rootWriter = rsLoader.writer();
    rsLoader.startBatch();
    ScalarWriter aWriter = rootWriter.scalar("a");
    ArrayWriter a1Writer = rootWriter.array("m1");
    TupleWriter m1Writer = a1Writer.tuple();
    ScalarWriter bWriter = m1Writer.scalar("b");
    ArrayWriter a2Writer = m1Writer.array("m2");
    TupleWriter m2Writer = a2Writer.tuple();
    ScalarWriter cWriter = m2Writer.scalar("c");
    ScalarWriter dWriter = m2Writer.array("d").scalar();
    for (int i = 0; i < 5; i++) {
        rootWriter.start();
        aWriter.setInt(i);
        for (int j = 0; j < 4; j++) {
            int a1Key = i + 10 + j;
            bWriter.setInt(a1Key);
            for (int k = 0; k < 3; k++) {
                int a2Key = a1Key * 10 + k;
                cWriter.setInt(a2Key);
                for (int l = 0; l < 2; l++) {
                    dWriter.setString("d-" + (a2Key * 10 + l));
                }
                a2Writer.save();
            }
            a1Writer.save();
        }
        rootWriter.save();
    }
    RowSet results = fixture.wrap(rsLoader.harvest());
    RowSetReader reader = results.reader();
    ScalarReader aReader = reader.scalar("a");
    ArrayReader a1Reader = reader.array("m1");
    TupleReader m1Reader = a1Reader.tuple();
    ScalarReader bReader = m1Reader.scalar("b");
    ArrayReader a2Reader = m1Reader.array("m2");
    TupleReader m2Reader = a2Reader.tuple();
    ScalarReader cReader = m2Reader.scalar("c");
    ArrayReader dArray = m2Reader.array("d");
    ScalarReader dReader = dArray.scalar();
    for (int i = 0; i < 5; i++) {
        assertTrue(reader.next());
        assertEquals(i, aReader.getInt());
        for (int j = 0; j < 4; j++) {
            assertTrue(a1Reader.next());
            int a1Key = i + 10 + j;
            assertEquals(a1Key, bReader.getInt());
            for (int k = 0; k < 3; k++) {
                assertTrue(a2Reader.next());
                int a2Key = a1Key * 10 + k;
                assertEquals(a2Key, cReader.getInt());
                for (int l = 0; l < 2; l++) {
                    assertTrue(dArray.next());
                    assertEquals("d-" + (a2Key * 10 + l), dReader.getString());
                }
            }
        }
    }
    rsLoader.close();
}

Example 4 with RowSetReader

use of org.apache.drill.exec.physical.rowSet.RowSetReader in project drill by apache.

the class TestResultSetLoaderOmittedValues method testOmittedValuesAtEndWithOverflow.

/**
 * Test "holes" at the end of a batch when batch overflows. Completed
 * batch must be finalized correctly, new batch initialized correct,
 * for the missing values.
 */
@Test
public void testOmittedValuesAtEndWithOverflow() {
    TupleMetadata schema = new SchemaBuilder().add("a", MinorType.INT).add("b", MinorType.VARCHAR).addNullable("c", MinorType.VARCHAR).addNullable("d", MinorType.VARCHAR).buildSchema();
    ResultSetLoaderImpl.ResultSetOptions options = new ResultSetOptionBuilder().rowCountLimit(ValueVector.MAX_ROW_COUNT).readerSchema(schema).build();
    ResultSetLoader rsLoader = new ResultSetLoaderImpl(fixture.allocator(), options);
    RowSetLoader rootWriter = rsLoader.writer();
    // Fill the batch. Column d has some values. Column c is worst case: no values.
    rsLoader.startBatch();
    byte[] value = new byte[533];
    Arrays.fill(value, (byte) 'X');
    int rowNumber = 0;
    while (!rootWriter.isFull()) {
        rootWriter.start();
        rowNumber++;
        rootWriter.scalar(0).setInt(rowNumber);
        rootWriter.scalar(1).setBytes(value, value.length);
        if (rowNumber < 10_000) {
            rootWriter.scalar(3).setString("d-" + rowNumber);
        }
        rootWriter.save();
        assertEquals(rowNumber, rsLoader.totalRowCount());
    }
    // Harvest and verify
    RowSet result = fixture.wrap(rsLoader.harvest());
    assertEquals(rowNumber - 1, result.rowCount());
    RowSetReader reader = result.reader();
    int rowIndex = 0;
    while (reader.next()) {
        int expectedRowNumber = 1 + rowIndex;
        assertEquals(expectedRowNumber, reader.scalar(0).getInt());
        assertTrue(reader.scalar(2).isNull());
        if (expectedRowNumber < 10_000) {
            assertEquals("d-" + expectedRowNumber, reader.scalar(3).getString());
        } else {
            assertTrue(reader.scalar(3).isNull());
        }
        rowIndex++;
    }
    // Start count for this batch is one less than current
    // count, because of the overflow row.
    int startRowNumber = rowNumber;
    // Write a few more rows to the next batch
    rsLoader.startBatch();
    for (int i = 0; i < 10; i++) {
        rootWriter.start();
        rowNumber++;
        rootWriter.scalar(0).setInt(rowNumber);
        rootWriter.scalar(1).setBytes(value, value.length);
        if (i > 5) {
            rootWriter.scalar(3).setString("d-" + rowNumber);
        }
        rootWriter.save();
        assertEquals(rowNumber, rsLoader.totalRowCount());
    }
    // Verify that holes were preserved.
    result = fixture.wrap(rsLoader.harvest());
    assertEquals(rowNumber, rsLoader.totalRowCount());
    assertEquals(rowNumber - startRowNumber + 1, result.rowCount());
    // result.print();
    reader = result.reader();
    rowIndex = 0;
    while (reader.next()) {
        int expectedRowNumber = startRowNumber + rowIndex;
        assertEquals(expectedRowNumber, reader.scalar(0).getInt());
        assertTrue(reader.scalar(2).isNull());
        if (rowIndex > 6) {
            assertEquals("d-" + expectedRowNumber, reader.scalar(3).getString());
        } else {
            assertTrue("Row " + rowIndex + " col d should be null", reader.scalar(3).isNull());
        }
        rowIndex++;
    }
    assertEquals(rowIndex, 11);
    rsLoader.close();
}

Example 5 with RowSetReader

use of org.apache.drill.exec.physical.rowSet.RowSetReader in project drill by apache.

the class TestResultSetLoaderMaps method testOverwriteRow.

/**
 * Version of the {#link TestResultSetLoaderProtocol#testOverwriteRow()} test
 * that uses nested columns.
 */
@Test
public void testOverwriteRow() {
    final TupleMetadata schema = new SchemaBuilder().add("a", MinorType.INT).addMap("m").add("b", MinorType.INT).add("c", MinorType.VARCHAR).resumeSchema().buildSchema();
    final ResultSetLoaderImpl.ResultSetOptions options = new ResultSetOptionBuilder().readerSchema(schema).rowCountLimit(ValueVector.MAX_ROW_COUNT).build();
    final ResultSetLoader rsLoader = new ResultSetLoaderImpl(fixture.allocator(), options);
    final RowSetLoader rootWriter = rsLoader.writer();
    // Can't use the shortcut to populate rows when doing overwrites.
    final ScalarWriter aWriter = rootWriter.scalar("a");
    final TupleWriter mWriter = rootWriter.tuple("m");
    final ScalarWriter bWriter = mWriter.scalar("b");
    final ScalarWriter cWriter = mWriter.scalar("c");
    // 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.
    final 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.setInt(count * 10);
        cWriter.setBytes(value, value.length);
        if (count % 100 == 0) {
            rootWriter.save();
        }
    }
    // Verify using a reader.
    final RowSet result = fixture.wrap(rsLoader.harvest());
    assertEquals(count / 100, result.rowCount());
    final RowSetReader reader = result.reader();
    final TupleReader mReader = reader.tuple("m");
    int rowId = 1;
    while (reader.next()) {
        assertEquals(rowId * 100, reader.scalar("a").getInt());
        assertEquals(rowId * 1000, mReader.scalar("b").getInt());
        assertTrue(Arrays.equals(value, mReader.scalar("c").getBytes()));
        rowId++;
    }
    result.clear();
    rsLoader.close();
}