Examples of OutputBuffers

com.facebook.presto.OutputBuffers

Examples of com.facebook.presto.OutputBuffers


    @Test
    public void testDuplicateRequests()
            throws Exception
    {
        OutputBuffers outputBuffers = INITIAL_EMPTY_OUTPUT_BUFFERS;
        SharedBuffer sharedBuffer = new SharedBuffer(sizeOfPages(10), outputBuffers);
        // add three items
        for (int i = 0; i < 3; i++) {
            addPage(sharedBuffer, createPage(i));
        }




        // add a queue
        outputBuffers = outputBuffers.withBuffer("first", new UnpartitionedPagePartitionFunction());
        sharedBuffer.setOutputBuffers(outputBuffers);
        assertQueueState(sharedBuffer, "first", 3, 0);


        // get the three elements
        assertBufferResultEquals(sharedBuffer.get("first", 0, sizeOfPages(10), NO_WAIT), bufferResult(0, createPage(0), createPage(1), createPage(2)));

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Examples of com.facebook.presto.OutputBuffers


    @Test
    public void testAddQueueAfterNoMoreQueues()
            throws Exception
    {
        OutputBuffers outputBuffers = INITIAL_EMPTY_OUTPUT_BUFFERS;
        SharedBuffer sharedBuffer = new SharedBuffer(sizeOfPages(10), outputBuffers);
        assertFalse(sharedBuffer.isFinished());


        // tell buffer no more queues will be added
        outputBuffers = outputBuffers.withNoMoreBufferIds();
        sharedBuffer.setOutputBuffers(outputBuffers);
        assertFalse(sharedBuffer.isFinished());


        // set no more queues a second time to assure that we don't get an exception or such
        sharedBuffer.setOutputBuffers(outputBuffers);

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Examples of com.facebook.presto.OutputBuffers


    @Test
    public void testOperationsOnUnknownQueues()
            throws Exception
    {
        OutputBuffers outputBuffers = INITIAL_EMPTY_OUTPUT_BUFFERS;
        SharedBuffer sharedBuffer = new SharedBuffer(sizeOfPages(10), outputBuffers);
        assertFalse(sharedBuffer.isFinished());


        // verify operations on unknown queue throw an exception
        try {
            sharedBuffer.get("unknown", 0, sizeOfPages(1), NO_WAIT);
            fail("Expected NoSuchBufferException from operation on unknown queue");
        }
        catch (NoSuchBufferException expected) {
        }


        // abort on unknown buffer is allowed
        sharedBuffer.abort("unknown");


        // finish buffer and try operations again
        sharedBuffer.finish();
        try {
            sharedBuffer.get("unknown", 0, sizeOfPages(1), NO_WAIT);
            fail("Expected NoSuchBufferException from operation on unknown queue");
        }
        catch (NoSuchBufferException expected) {
        }


        // abort on unknown buffer is allowed
        sharedBuffer.abort("unknown");


        // set no more queues and try operations again
        outputBuffers = outputBuffers.withNoMoreBufferIds();
        sharedBuffer.setOutputBuffers(outputBuffers);
        try {
            sharedBuffer.get("unknown", 0, sizeOfPages(1), NO_WAIT);
            fail("Expected NoSuchBufferException from operation on unknown queue");
        }

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Examples of com.facebook.presto.OutputBuffers


    @Test
    public void testAbort()
            throws Exception
    {
        OutputBuffers outputBuffers = INITIAL_EMPTY_OUTPUT_BUFFERS;
        SharedBuffer sharedBuffer = new SharedBuffer(sizeOfPages(10), outputBuffers);


        // fill the buffer
        for (int i = 0; i < 10; i++) {
            addPage(sharedBuffer, createPage(i));
        }
        sharedBuffer.finish();




        outputBuffers = outputBuffers.withBuffer("first", new UnpartitionedPagePartitionFunction());
        sharedBuffer.setOutputBuffers(outputBuffers);
        assertBufferResultEquals(sharedBuffer.get("first", 0, sizeOfPages(1), NO_WAIT), bufferResult(0, createPage(0)));
        sharedBuffer.abort("first");
        assertQueueClosed(sharedBuffer, "first", 0);
        assertBufferResultEquals(sharedBuffer.get("first", 1, sizeOfPages(1), NO_WAIT), emptyResults(1, true));


        outputBuffers = outputBuffers.withBuffer("second", new UnpartitionedPagePartitionFunction()).withNoMoreBufferIds();
        sharedBuffer.setOutputBuffers(outputBuffers);
        assertBufferResultEquals(sharedBuffer.get("second", 0, sizeOfPages(1), NO_WAIT), bufferResult(0, createPage(0)));
        sharedBuffer.abort("second");
        assertQueueClosed(sharedBuffer, "second", 0);
        assertFinished(sharedBuffer);

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Examples of com.facebook.presto.OutputBuffers


    @Test
    public void testFinishClosesEmptyQueues()
            throws Exception
    {
        OutputBuffers outputBuffers = INITIAL_EMPTY_OUTPUT_BUFFERS
                .withBuffer("first", new UnpartitionedPagePartitionFunction())
                .withBuffer("second", new UnpartitionedPagePartitionFunction());
        SharedBuffer sharedBuffer = new SharedBuffer(sizeOfPages(10), outputBuffers);


        // finish while queues are empty

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Examples of com.facebook.presto.OutputBuffers


    @Test
    public void testAbortFreesReader()
            throws Exception
    {
        OutputBuffers outputBuffers = INITIAL_EMPTY_OUTPUT_BUFFERS
                .withBuffer("queue", new UnpartitionedPagePartitionFunction());
        SharedBuffer sharedBuffer = new SharedBuffer(sizeOfPages(5), outputBuffers);
        assertFalse(sharedBuffer.isFinished());


        ExecutorService executor = Executors.newCachedThreadPool();

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Examples of com.facebook.presto.OutputBuffers


    @Test
    public void testFinishFreesReader()
            throws Exception
    {
        OutputBuffers outputBuffers = INITIAL_EMPTY_OUTPUT_BUFFERS
                .withBuffer("queue", new UnpartitionedPagePartitionFunction());
        SharedBuffer sharedBuffer = new SharedBuffer(sizeOfPages(5), outputBuffers);
        assertFalse(sharedBuffer.isFinished());


        ExecutorService executor = Executors.newCachedThreadPool();

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Examples of com.facebook.presto.OutputBuffers


    @Test
    public void testFinishFreesWriter()
            throws Exception
    {
        OutputBuffers outputBuffers = INITIAL_EMPTY_OUTPUT_BUFFERS
                .withBuffer("queue", new UnpartitionedPagePartitionFunction())
                .withNoMoreBufferIds();
        SharedBuffer sharedBuffer = new SharedBuffer(sizeOfPages(5), outputBuffers);
        assertFalse(sharedBuffer.isFinished());

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Examples of com.facebook.presto.OutputBuffers


    @Test
    public void testDestroyFreesReader()
            throws Exception
    {
        OutputBuffers outputBuffers = INITIAL_EMPTY_OUTPUT_BUFFERS
                .withBuffer("queue", new UnpartitionedPagePartitionFunction())
                .withNoMoreBufferIds();
        SharedBuffer sharedBuffer = new SharedBuffer(sizeOfPages(5), outputBuffers);
        assertFalse(sharedBuffer.isFinished());

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Examples of com.facebook.presto.OutputBuffers


    @Test
    public void testDestroyFreesWriter()
            throws Exception
    {
        OutputBuffers outputBuffers = INITIAL_EMPTY_OUTPUT_BUFFERS
                .withBuffer("queue", new UnpartitionedPagePartitionFunction())
                .withNoMoreBufferIds();
        SharedBuffer sharedBuffer = new SharedBuffer(sizeOfPages(5), outputBuffers);
        assertFalse(sharedBuffer.isFinished());

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