Examples with HBaseConsumerStateStore co.cask.cdap.data2.transaction.queue.hbase.HBaseConsumerStateStore used on opensource projects

Example 6 with HBaseConsumerStateStore

use of co.cask.cdap.data2.transaction.queue.hbase.HBaseConsumerStateStore in project cdap by caskdata.

the class HBaseQueueTest method testQueueUpgrade.

// This test upgrade from old queue (salted base) to new queue (sharded base)
@Test(timeout = 30000L)
public void testQueueUpgrade() throws Exception {
    final QueueName queueName = QueueName.fromFlowlet(NamespaceId.DEFAULT.getEntityName(), "app", "flow", "flowlet", "upgrade");
    HBaseQueueAdmin hbaseQueueAdmin = (HBaseQueueAdmin) queueAdmin;
    HBaseQueueClientFactory hBaseQueueClientFactory = (HBaseQueueClientFactory) queueClientFactory;
    // Create the old queue table explicitly
    HBaseQueueAdmin oldQueueAdmin = new HBaseQueueAdmin(hConf, cConf, injector.getInstance(LocationFactory.class), injector.getInstance(HBaseTableUtil.class), injector.getInstance(DatasetFramework.class), injector.getInstance(TransactionExecutorFactory.class), QueueConstants.QueueType.QUEUE, injector.getInstance(NamespaceQueryAdmin.class), injector.getInstance(Impersonator.class));
    oldQueueAdmin.create(queueName);
    int buckets = cConf.getInt(QueueConstants.ConfigKeys.QUEUE_TABLE_PRESPLITS);
    try (final HBaseQueueProducer oldProducer = hBaseQueueClientFactory.createProducer(oldQueueAdmin, queueName, QueueConstants.QueueType.QUEUE, QueueMetrics.NOOP_QUEUE_METRICS, new SaltedHBaseQueueStrategy(tableUtil, buckets), new ArrayList<ConsumerGroupConfig>())) {
        // Enqueue 10 items to old queue table
        Transactions.createTransactionExecutor(executorFactory, oldProducer).execute(new TransactionExecutor.Subroutine() {

            @Override
            public void apply() throws Exception {
                for (int i = 0; i < 10; i++) {
                    oldProducer.enqueue(new QueueEntry("key", i, Bytes.toBytes("Message " + i)));
                }
            }
        });
    }
    // Configure the consumer
    final ConsumerConfig consumerConfig = new ConsumerConfig(0L, 0, 1, DequeueStrategy.HASH, "key");
    try (QueueConfigurer configurer = queueAdmin.getQueueConfigurer(queueName)) {
        Transactions.createTransactionExecutor(executorFactory, configurer).execute(new TransactionExecutor.Subroutine() {

            @Override
            public void apply() throws Exception {
                configurer.configureGroups(ImmutableList.of(consumerConfig));
            }
        });
    }
    // explicit set the consumer state to be the lowest start row
    try (HBaseConsumerStateStore stateStore = hbaseQueueAdmin.getConsumerStateStore(queueName)) {
        Transactions.createTransactionExecutor(executorFactory, stateStore).execute(new TransactionExecutor.Subroutine() {

            @Override
            public void apply() throws Exception {
                stateStore.updateState(consumerConfig.getGroupId(), consumerConfig.getInstanceId(), QueueEntryRow.getQueueEntryRowKey(queueName, 0L, 0));
            }
        });
    }
    // Enqueue 10 more items to new queue table
    createEnqueueRunnable(queueName, 10, 1, null).run();
    // Verify both old and new table have 10 rows each
    Assert.assertEquals(10, countRows(hbaseQueueAdmin.getDataTableId(queueName, QueueConstants.QueueType.QUEUE)));
    Assert.assertEquals(10, countRows(hbaseQueueAdmin.getDataTableId(queueName, QueueConstants.QueueType.SHARDED_QUEUE)));
    // Create a consumer. It should see all 20 items
    final List<String> messages = Lists.newArrayList();
    try (final QueueConsumer consumer = queueClientFactory.createConsumer(queueName, consumerConfig, 1)) {
        while (messages.size() != 20) {
            Transactions.createTransactionExecutor(executorFactory, (TransactionAware) consumer).execute(new TransactionExecutor.Subroutine() {

                @Override
                public void apply() throws Exception {
                    DequeueResult<byte[]> result = consumer.dequeue(20);
                    for (byte[] data : result) {
                        messages.add(Bytes.toString(data));
                    }
                }
            });
        }
    }
    verifyQueueIsEmpty(queueName, ImmutableList.of(consumerConfig));
}

Example 7 with HBaseConsumerStateStore

use of co.cask.cdap.data2.transaction.queue.hbase.HBaseConsumerStateStore in project cdap by caskdata.

the class HBaseQueueDebugger method scanQueue.

/**
 * Only works for {@link co.cask.cdap.data2.transaction.queue.hbase.ShardedHBaseQueueStrategy}.
 */
public QueueStatistics scanQueue(final QueueName queueName, @Nullable Long consumerGroupId) throws Exception {
    HBaseConsumerStateStore stateStore;
    try {
        stateStore = queueAdmin.getConsumerStateStore(queueName);
    } catch (IllegalStateException e) {
        throw new NotFoundException(queueName);
    }
    TransactionExecutor txExecutor = Transactions.createTransactionExecutor(txExecutorFactory, stateStore);
    Multimap<Long, QueueBarrier> barriers = txExecutor.execute(new TransactionExecutor.Function<HBaseConsumerStateStore, Multimap<Long, QueueBarrier>>() {

        @Override
        public Multimap<Long, QueueBarrier> apply(HBaseConsumerStateStore input) throws Exception {
            return input.getAllBarriers();
        }
    }, stateStore);
    printProgress("Got %d barriers\n", barriers.size());
    QueueStatistics stats = new QueueStatistics();
    if (consumerGroupId != null) {
        barriers = Multimaps.filterKeys(barriers, Predicates.equalTo(consumerGroupId));
    }
    for (Map.Entry<Long, Collection<QueueBarrier>> entry : barriers.asMap().entrySet()) {
        long groupId = entry.getKey();
        Collection<QueueBarrier> groupBarriers = entry.getValue();
        printProgress("Scanning barriers for group %d\n", groupId);
        int currentSection = 1;
        PeekingIterator<QueueBarrier> barrierIterator = Iterators.peekingIterator(groupBarriers.iterator());
        while (barrierIterator.hasNext()) {
            QueueBarrier start = barrierIterator.next();
            QueueBarrier end = barrierIterator.hasNext() ? barrierIterator.peek() : null;
            printProgress("Scanning section %d/%d...\n", currentSection, groupBarriers.size());
            scanQueue(txExecutor, stateStore, queueName, start, end, stats);
            printProgress("Current results: %s\n", stats.getReport(showTxTimestampOnly()));
            currentSection++;
        }
        printProgress("Scanning complete");
    }
    System.out.printf("Results for queue %s: %s\n", queueName.toString(), stats.getReport(showTxTimestampOnly()));
    return stats;
}