Examples with CursorProcessor io.prestosql.operator.project.CursorProcessor used on opensource projects

Example 1 with CursorProcessor

use of io.prestosql.operator.project.CursorProcessor in project hetu-core by openlookeng.

the class TestScanFilterAndProjectOperator method testRecordCursorYield.

@Test
public void testRecordCursorYield() {
    // create a generic long function that yields for projection on every row
    // verify we will yield #row times totally
    // create a table with 15 rows
    int length = 15;
    Page input = SequencePageBuilder.createSequencePage(ImmutableList.of(BIGINT), length, 0);
    DriverContext driverContext = newDriverContext();
    // set up generic long function with a callback to force yield
    Metadata localMetadata = functionAssertions.getMetadata();
    localMetadata.getFunctionAndTypeManager().registerBuiltInFunctions(ImmutableList.of(new GenericLongFunction("record_cursor", value -> {
        driverContext.getYieldSignal().forceYieldForTesting();
        return value;
    })));
    ExpressionCompiler compiler = new ExpressionCompiler(localMetadata, new PageFunctionCompiler(localMetadata, 0));
    List<RowExpression> projections = ImmutableList.of(call(QualifiedObjectName.valueOfDefaultFunction("generic_long_record_cursor").toString(), new BuiltInFunctionHandle(internalScalarFunction(QualifiedObjectName.valueOfDefaultFunction("generic_long_record_cursor"), BIGINT.getTypeSignature(), ImmutableList.of(BIGINT.getTypeSignature()))), BIGINT, field(0, BIGINT)));
    Supplier<CursorProcessor> cursorProcessor = compiler.compileCursorProcessor(Optional.empty(), projections, "key");
    Supplier<PageProcessor> pageProcessor = compiler.compilePageProcessor(Optional.empty(), projections);
    ScanFilterAndProjectOperator.ScanFilterAndProjectOperatorFactory factory = new ScanFilterAndProjectOperator.ScanFilterAndProjectOperatorFactory(0, new PlanNodeId("test"), new PlanNodeId("0"), (session, split, table, columns, dynamicFilter) -> new RecordPageSource(new PageRecordSet(ImmutableList.of(BIGINT), input)), cursorProcessor, pageProcessor, TEST_TABLE_HANDLE, ImmutableList.of(), null, ImmutableList.of(BIGINT), new DataSize(0, BYTE), 0, ReuseExchangeOperator.STRATEGY.REUSE_STRATEGY_DEFAULT, new UUID(0, 0), false, Optional.empty(), 0, 0);
    SourceOperator operator = factory.createOperator(driverContext);
    operator.addSplit(new Split(new CatalogName("test"), TestingSplit.createLocalSplit(), Lifespan.taskWide()));
    operator.noMoreSplits();
    // start driver; get null value due to yield for the first 15 times
    for (int i = 0; i < length; i++) {
        driverContext.getYieldSignal().setWithDelay(SECONDS.toNanos(1000), driverContext.getYieldExecutor());
        assertNull(operator.getOutput());
        driverContext.getYieldSignal().reset();
    }
    // the 16th yield is not going to prevent the operator from producing a page
    driverContext.getYieldSignal().setWithDelay(SECONDS.toNanos(1000), driverContext.getYieldExecutor());
    Page output = operator.getOutput();
    driverContext.getYieldSignal().reset();
    assertNotNull(output);
    assertEquals(toValues(BIGINT, output.getBlock(0)), toValues(BIGINT, input.getBlock(0)));
}

Example 2 with CursorProcessor

use of io.prestosql.operator.project.CursorProcessor in project hetu-core by openlookeng.

the class TestScanFilterAndProjectOperator method testRecordCursorSource.

@Test
public void testRecordCursorSource() {
    final Page input = SequencePageBuilder.createSequencePage(ImmutableList.of(VARCHAR), 10_000, 0);
    DriverContext driverContext = newDriverContext();
    List<RowExpression> projections = ImmutableList.of(field(0, VARCHAR));
    Supplier<CursorProcessor> cursorProcessor = expressionCompiler.compileCursorProcessor(Optional.empty(), projections, "key");
    Supplier<PageProcessor> pageProcessor = expressionCompiler.compilePageProcessor(Optional.empty(), projections);
    ScanFilterAndProjectOperator.ScanFilterAndProjectOperatorFactory factory = new ScanFilterAndProjectOperator.ScanFilterAndProjectOperatorFactory(0, new PlanNodeId("test"), new PlanNodeId("0"), (session, split, table, columns, dynamicFilter) -> new RecordPageSource(new PageRecordSet(ImmutableList.of(VARCHAR), input)), cursorProcessor, pageProcessor, TEST_TABLE_HANDLE, ImmutableList.of(), null, ImmutableList.of(VARCHAR), new DataSize(0, BYTE), 0, ReuseExchangeOperator.STRATEGY.REUSE_STRATEGY_DEFAULT, new UUID(0, 0), false, Optional.empty(), 0, 0);
    SourceOperator operator = factory.createOperator(driverContext);
    operator.addSplit(new Split(new CatalogName("test"), TestingSplit.createLocalSplit(), Lifespan.taskWide()));
    operator.noMoreSplits();
    MaterializedResult expected = toMaterializedResult(driverContext.getSession(), ImmutableList.of(VARCHAR), ImmutableList.of(input));
    MaterializedResult actual = toMaterializedResult(driverContext.getSession(), ImmutableList.of(VARCHAR), toPages(operator));
    assertEquals(actual.getRowCount(), expected.getRowCount());
    assertEquals(actual, expected);
}

Example 3 with CursorProcessor

use of io.prestosql.operator.project.CursorProcessor in project hetu-core by openlookeng.

the class TestScanFilterAndProjectOperator method testPageSource.

@Test
public void testPageSource() {
    final Page input = SequencePageBuilder.createSequencePage(ImmutableList.of(VARCHAR), 10_000, 0);
    DriverContext driverContext = newDriverContext();
    List<RowExpression> projections = ImmutableList.of(field(0, VARCHAR));
    Supplier<CursorProcessor> cursorProcessor = expressionCompiler.compileCursorProcessor(Optional.empty(), projections, "key");
    Supplier<PageProcessor> pageProcessor = expressionCompiler.compilePageProcessor(Optional.empty(), projections);
    ScanFilterAndProjectOperator.ScanFilterAndProjectOperatorFactory factory = new ScanFilterAndProjectOperator.ScanFilterAndProjectOperatorFactory(0, new PlanNodeId("test"), new PlanNodeId("0"), (session, split, table, columns, dynamicFilter) -> new FixedPageSource(ImmutableList.of(input)), cursorProcessor, pageProcessor, TEST_TABLE_HANDLE, ImmutableList.of(), null, ImmutableList.of(VARCHAR), new DataSize(0, BYTE), 0, ReuseExchangeOperator.STRATEGY.REUSE_STRATEGY_DEFAULT, new UUID(0, 0), false, Optional.empty(), 0, 0);
    SourceOperator operator = factory.createOperator(driverContext);
    operator.addSplit(new Split(new CatalogName("test"), TestingSplit.createLocalSplit(), Lifespan.taskWide()));
    operator.noMoreSplits();
    MaterializedResult expected = toMaterializedResult(driverContext.getSession(), ImmutableList.of(VARCHAR), ImmutableList.of(input));
    MaterializedResult actual = toMaterializedResult(driverContext.getSession(), ImmutableList.of(VARCHAR), toPages(operator));
    assertEquals(actual.getRowCount(), expected.getRowCount());
    assertEquals(actual, expected);
}

Example 4 with CursorProcessor

use of io.prestosql.operator.project.CursorProcessor in project hetu-core by openlookeng.

the class TestScanFilterAndProjectOperator method testPageSourceMergeOutput.

@Test
public void testPageSourceMergeOutput() {
    List<Page> input = rowPagesBuilder(BIGINT).addSequencePage(100, 0).addSequencePage(100, 0).addSequencePage(100, 0).addSequencePage(100, 0).build();
    RowExpression filter = call(EQUAL.getFunctionName().toString(), new BuiltInFunctionHandle(Signature.internalOperator(EQUAL, BOOLEAN.getTypeSignature(), ImmutableList.of(BIGINT.getTypeSignature(), BIGINT.getTypeSignature()))), BOOLEAN, field(0, BIGINT), constant(10L, BIGINT));
    List<RowExpression> projections = ImmutableList.of(field(0, BIGINT));
    Supplier<CursorProcessor> cursorProcessor = expressionCompiler.compileCursorProcessor(Optional.of(filter), projections, "key");
    Supplier<PageProcessor> pageProcessor = expressionCompiler.compilePageProcessor(Optional.of(filter), projections);
    ScanFilterAndProjectOperator.ScanFilterAndProjectOperatorFactory factory = new ScanFilterAndProjectOperator.ScanFilterAndProjectOperatorFactory(0, new PlanNodeId("test"), new PlanNodeId("0"), (session, split, table, columns, dynamicFilter) -> new FixedPageSource(input), cursorProcessor, pageProcessor, TEST_TABLE_HANDLE, ImmutableList.of(), null, ImmutableList.of(BIGINT), new DataSize(64, KILOBYTE), 2, ReuseExchangeOperator.STRATEGY.REUSE_STRATEGY_DEFAULT, new UUID(0, 0), false, Optional.empty(), 0, 0);
    SourceOperator operator = factory.createOperator(newDriverContext());
    operator.addSplit(new Split(new CatalogName("test"), TestingSplit.createLocalSplit(), Lifespan.taskWide()));
    operator.noMoreSplits();
    List<Page> actual = toPages(operator);
    assertEquals(actual.size(), 1);
    List<Page> expected = rowPagesBuilder(BIGINT).row(10L).row(10L).row(10L).row(10L).build();
    assertPageEquals(ImmutableList.of(BIGINT), actual.get(0), expected.get(0));
}

Example 5 with CursorProcessor

use of io.prestosql.operator.project.CursorProcessor in project hetu-core by openlookeng.

the class TestScanFilterAndProjectOperator method testPageSourceLazyLoad.

@Test
public void testPageSourceLazyLoad() {
    Block inputBlock = BlockAssertions.createLongSequenceBlock(0, 100);
    // If column 1 is loaded, test will fail
    Page input = new Page(100, inputBlock, new LazyBlock(100, lazyBlock -> {
        throw new AssertionError("Lazy block should not be loaded");
    }));
    DriverContext driverContext = newDriverContext();
    List<RowExpression> projections = ImmutableList.of(field(0, VARCHAR));
    Supplier<CursorProcessor> cursorProcessor = expressionCompiler.compileCursorProcessor(Optional.empty(), projections, "key");
    PageProcessor pageProcessor = new PageProcessor(Optional.of(new SelectAllFilter()), ImmutableList.of(new LazyPagePageProjection()));
    ScanFilterAndProjectOperator.ScanFilterAndProjectOperatorFactory factory = new ScanFilterAndProjectOperator.ScanFilterAndProjectOperatorFactory(0, new PlanNodeId("test"), new PlanNodeId("0"), (session, split, table, columns, dynamicFilter) -> new SinglePagePageSource(input), cursorProcessor, () -> pageProcessor, TEST_TABLE_HANDLE, ImmutableList.of(), null, ImmutableList.of(BIGINT), new DataSize(0, BYTE), 0, ReuseExchangeOperator.STRATEGY.REUSE_STRATEGY_DEFAULT, new UUID(0, 0), false, Optional.empty(), 0, 0);
    SourceOperator operator = factory.createOperator(driverContext);
    operator.addSplit(new Split(new CatalogName("test"), TestingSplit.createLocalSplit(), Lifespan.taskWide()));
    operator.noMoreSplits();
    MaterializedResult expected = toMaterializedResult(driverContext.getSession(), ImmutableList.of(BIGINT), ImmutableList.of(new Page(inputBlock)));
    MaterializedResult actual = toMaterializedResult(driverContext.getSession(), ImmutableList.of(BIGINT), toPages(operator));
    assertEquals(actual.getRowCount(), expected.getRowCount());
    assertEquals(actual, expected);
}